Copyright 2006-2020 GEARS Magazine. Bingo! Diagnose the problem (accurately diagnose). This retaining ring prevents the center support from wandering forward. Transmission problems are often perceived as mechanical or hydraulic when they are actually electrical issues that adversely affect the hydromechanical parts. But then, the 4R70W is also not a great place to end your search either. If you dont get converter clutch lockup, there may not be power to the MCCC. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. WebThe McDonnell Douglas DC-10 is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights. Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. All Rights Reserved. Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. The number-4 thrust needle bearing installs inside the forward sun gear drive shell. If these seal ends overlap, you get internal leakage. Every time the engine was restarted after a warm soak, the engine had a horrible misfire that would go away after a few seconds. If they are heat cracked or bluish, do not reuse them. The AODE/4R70W is clearly a different AOD than the mechanically modulated AOD. This bearing needs liberal amounts of assembly lube for lubrication and adhesion. Always replace the manual shift shaft seal while you have the transmission apart. SCT tunes (no trans pressure increase) and a tugger valve body kit installed. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. As you mate clutch assemblies, ensure complete mating and seating before loading each assembly into the case. These cookies will be stored in your browser only with your consent. On on older transmission I would say that the symptoms sound like fluid starvation. The AODE/4R70W rotating mass is similar to that of the AOD. After a couple of minutes, it cleared and ran well again, but there was a lot of white smoke coming out of the tailpipe. Chrysler and General Motors followed swiftly with their respective versions. The vehicle in question was a 2014 Ford Econoline E-250 bus. It does not store any personal data. Install a new overdrive band and anchor it to the pin. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. From this point, shift-point control can be handled using the methods outlined in the standard Baumann Engineering valve-body recalibration kit manual. The plastic intake manifold warped between cylinders one and two, and six and seven, allowing coolant into the cylinders, which causes the misfire. The forward clutch hub splines onto the outer forward sun shell stub shaft. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. The gaskets and seals are also potential leak and pressure-loss points. WebThe 4R70W/4R75W transmission is susceptible to issues that include: loss of forward gears, intermediate clutch failure, loss of second gear, delayed reverse or shudder in reverse, Check the uid level and line pressure. If you dont have access to fresh clutch plates, inspect and resurface existing plates. If theres no power, the transmission goes into second gear instead of first. The intermediate stub shaft splines into the planet carrier. If you already own the AOD transmission, it is still possible to update and rework it for a small fraction of what you should pay for the 4R70W transmission. This cookie is set by GDPR Cookie Consent plugin. The next items to check are the number-3 and number-4 sealing rings. WebThe 4R70W/4R75W transmission is susceptible to issues that include: loss of forward gears, intermediate clutch failure, loss of second gear, delayed reverse or shudder in reverse, delayed/no lock-up, harsh 2-3 shift, loss or slipping in forward gears, direct clutch failure or loss of third and fourth gears, low pressure or harsh shifts and front Online Buyer's Guide Intermittent Fail Safe, Codes, Related Concerns and Solutions, The ZF 8-Speed Transmission Fluid and Filter Change, Tackling Clutch Failure in the GM 6L80/90, An Audi Opportunity! Any seal bind is a guaranteed leak. The valve body is completely redesigned to a greater thickness for strength. Make sure you have plenty of lube and smooth piston travel. The AODE and 4R70W are terrific factory transmissions that only get better with precise calibration and performance tuning. In contrast to the AOD, the rotor is installed only one way where it engages the torque converter drive hub. Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting Roller clutches should always be replaced; consider it good life insurance. In other words, are the two pump halves securely tightened? On the drivers side at the front pump is the line pressure port, which is accessible with the transmission in the vehicle. These sealing rings must be well lubricated for pump installation. Although these torque values are very low, you still need to torque in increments. The uid condition is your first indication of transmission health. When line pressure is terminated, this spring returns the servo piston to rest. The gear ratios of the 4R70W transmission are: First gear: 2.84 Second gear: 1.55 Third gear: 1:1 Fourth gear: 0.70 The respective gear ratios of the AOD are: 1st PS. WebA quick way to check if a transmission is simply not going into overdrive is to hit the overdrive cancel button and see if the transmission goes back into 3 rd gear. Protect your eyes and face for this step. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. But when we checked the coolant for exhaust gases, there wasnt any. With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo. This cover contains line pressure at the 1-2 shift accumulator. Give these rings and grooves abundant lubrication. The direct clutch should be fitted with new steels and frictions. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. Once you have the converter seated it is It helps determine line pressure based on vehicle speed much as the governor does on the AOD. Sales & Info: 330-434-5216 The direct clutch assembly was incinerated (we expected that). The extension housing received a new bushing. However, for the sake of longevity, replace yours. Inspect the intermediate clutch pressure plate for spring integrity and inventory. Erratic shifting One of the first symptoms of a bad or failing downshift solenoid is erratic shifting. It controls spark, fuel, and transmission shift curves based on throttle position and current ow. If the SS1 solenoid remains energized or the 1-2 shift valve sticks, you dont get a 1-2 upshift. Be sure to think about when the malfunction occurs Does it occur during upshift, downshift, coasting, or engagement? The AODE/ 4R70W differs from the AOD in input. Install the low-reverse band servo piston return spring. It is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. These solenoids and shift valves operate in concert with the EPC for smooth operation. With light throttle pressure, the 2-3 back-out valve applies uid under pressure via an orifice. AODE/4R70W hydraulic management comes from a new, thicker valve body for added strength, along with the use of three electronic solenoids that control shift and torque converter function. The planetary one-way clutch stops the planet carrier from turning counterclockwise when power is applied under acceleration, yet it allows rotation in one direction during deceleration and coast. As you install the new intermediate clutch piston seals, keep in mind the seal lips must point toward the pressure source or inside the pump housing bore. This drain hole must be at 6 oclock. Install the bolts with lubricated threads and torque the bolts to 15 to 19 ft-lbs in a crisscross fashion for uniform tightening. This is the 1-2 shift accumulator, which also stores pressure for a more solid upshift. My 1st guess is a rolled or cut lip seal. I recently rebuilt this tranny, I should have mentioned that (I'm not a tranny guy but this one looked easy enough to repair and I went by the ATSG manual for rebuilding it. Is a Transmission Tune up Necessary for My Cars Performance? They are controlled via two different hydraulic circuits. This cookie is set by GDPR Cookie Consent plugin. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. Subscribe. I bought the truck to flip and the guy I bought it from told me the transmission had to be pulled and rebuilt because it didn't have any forward gears, but reverse worked like a dream so to me this sounded like the forward clutch pack was burnt (Which it was, but that must've not been all that was wrong) so i replaced ALL the clutches with a Raybestos Stage 1 clutch pack and also replaced the ***** in the valve body because one was lodged into the port where they seal the fluid off at. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! The planetary one-way clutch overruns. Use a little leverage to install the snap ring. GearStar Performance Transmission If clutch and servo are an issue then internal work is needed. Examine the check ball valves for freedom of movement. You may also use the Ford tool (PN T92P-70023-A). Install the forward clutch frictions alternately between the steels. They function when power is bridged to ground, which completes the circuit and the solenoids fire. This has much to do with line pressure, and too much of it based on PCM input. Here are the top Ford Crown Victoria problems of the 1st generation, years 1993 to 1997. It does affect clearances. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Be very careful not to scratch the clutch piston. Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. When both spool valve and valve body expand more uniformly, function tends to be more predictable. Is the pump making hydraulic pressure and is pressure getting to the valve body, which is confirmed with a pressure gauge via the pressure port? Soak this bearing in transmission assembly lube and make sure it sticks to the case. Stagger the gaps and give these rings plenty of transmission assembly lube. 1st Gear: 2.84; 2nd Gear: 1.55; 3rd Gear: 1.00; 4th Gear: 0.70; Reverse: 2.23 Pump assembly must be performed meticulously with clearances checked. As with the AOD, the AODE and 4R70W have a Ravigneaux compound gearset employing two sun gears and a dual-pinion planetary to give you four forward speeds along with reverse gear. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. 1. It does what the governor did hydraulically. With the locking converter comes a wider bellhousing than the AOD has. Do not get this backward. Is there any tests I can do without pulling the trans first? With all clutches and steels installed and clearances checked (.060.091 inch), install the snap ring. Make sure it remains centered during installation. Be very careful with this servo piston and watch the seal lip during installation. This keeps the transmission in first gear. It was Please register or login to enable Dark Mode. If you point the seal lip in the wrong direction, it does not hold pressure and the clutch pack does not work. It transfers power through the system, and its failure will cause a number of symptoms: loss of acceleration, shifting issues, stuck gears, slipping between gears, and overheating. Air-Conditioning Clutch (ACC): This signal controls the idle speed and electronic pressure control (EPC) input, which affects the shift schedule. You can copy and paste this link to share: https://www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. Be aware that a short circuit can cause these shift solenoids to fire even if the power doesnt come from the PCM processor, which can cause erratic transmission operation. Did it come on all at once or did it arrive gradually? The 4R70W, a Ford transmission, is an evolution to the popular AODE and is often used interchangeably. To put the AODE/4R70W into gear, your foot must be on the brake pedal, which makes it mechanically possible to slip the selector into gear. The transmission must be removed to check torque converter function. I did replace scarf cut seals and made sure they went in properly. Work the sun gear drive shell back and forth to seat. 4R70W tcc lock up in 1st gear. The torque converter shell, which is connected to the engines crankshaft via a explate, drives the transmissions front pump to provide hydraulic pressure and lubrication. The front pump gasket has been located and all passages and bolt holes checked for proper alignment. The AOD full-throttle shift-point with the Motorsport wide-ratio gear-set is different. So the valve body on 4r70w and maybe 4r75w tend to wear out so replacing the whole valve body is recommend instead of trying to fix the valve bores in my opinion you are eliminating further issues, valve body on eBay good with one year warranty 65$ bucks thats super cheap fix for these mysteriously instantaneous loss of forward gears without 1996-2004 Mustang 4.6L 2V 4R70W Transmission Gear Ratios. Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation. Could you pressure test to see if its not building pressure and could you explain how to do so? ^^Agreed your pressures look good to me. Reverse; 80-120 psi. The torque converters turbine drives the input shaft. Servo apply pressure is controlled by the low servo modulator valve. Install the intermediate clutch servo piston in the front pump. In part 2 of this series we show the transmission torn Twist and wiggle the stub shaft and feel for proper seating. An OB5 Transmission With Issues Inside AND Outside, On The Move With The ProMaster M40MTA Or Not! Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. The fix was to replace the intake manifold. If you dont have a press, just about any machine shop has one. The MCCC gets pulsing signals from the PCM. Keep in mind, Reverse does not use a solenoid 'like' the forward gears. Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. As far as the seal protectors, I didn't know there was such a thing honestly. Analytical cookies are used to understand how visitors interact with the website. Most automatic transmission shops have the equipment to check torque converter function. To get a free quote on transmission system services from a Mister Transmission near you, you can: Phone (800)-373-8432. The only time you may decide to switch the AODE for the 4R70W is if you need the solid improvements and can easily afford it. It can also mean reverse clutch piston seal problems. Cookie Policy - About Us - The MCCC is off (on the torque converter, no lockup). Early 1999 4x4 w/ 215,000 and auto (4R100). Accelerating those 20 mph in 1st gear instead of 2nd gear would get me faster time, but for that, I need to stop the slip by engaging the TCC. In case the ratio exceeds the specified value, TCM judges this diagnosis malfunction. Ford developed the AODE and 4R70W to achieve cohesive engine and transmission function in 1991. The RDI was ordered and taken to the bench for disassembly. The lap joint must meet head-on and be perfectly aligned. The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. Torque the bolts in a strict pattern to prevent warping. Privacy Statement - You simply need a hammer handle and the moderate pressure that comes from your hand. Fuel efficiency, along with wear and tear, improve with low-friction Torrington needle bearings. That's my plan of attack, thanks for the help. Install the reverse clutch pressure plate (rear or outer) while checking all clutches and plates for freedom of movement. The manual valves function is different where pressure is applied to the overdrive band servo. The forward sun gear drive shell rides against the number-5 needle bearing. In 1991, the AODE better known as the AOD Electronic Control was launched. Generously lubricate the seal lip with assembly lube. It could also be a misfire. Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. Rock these assemblies back and forth until the forward clutch is completely seated in the reverse clutch drum. Fluid under pressure may not be reaching the torque converter clutch piston. Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. Each transmission build shop has its own approach to assembly. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. Written by George Reid and Posted with Permission of CarTechBooks. The intermediate one-way clutch keeps the reverse clutch drum, shell, and reverse sun gear from rotating counterclockwise when power is being applied (acceleration). Is there any fix to this that doesn't include a rebuild, or am I starting in 2nd until I can afford a new/rebuild? The fluid is brand new and at the correct level. Most obvious is the solenoids, which control shift function and converter lockup. Lose the spring and you will have slip-yoke leakage. Was shifting hard from 1st to 2nd and then alright. All that is needed now are clutch discs between the clutch plates. Pressure causes the lip to seal. WebFord 4R70W/4R75W Transmission Information. Park is the last manual detent when the linkage is full forward. This transmission has lower gear ratios in first and second gears, which brings about improved It should also be noted that the cases and valve bodies of the AOD, AODE, and the 4R70W, are different. How did the forward clutch drum look? After you add liberal lubrication to the output shaft seal, press it in. Staggering the gaps helps the sealing rings hold pressure. Electronic Pressure Control (EPC) Solenoid: Your AODE/4R70Ws pace-maker. As power begins to reach the EPC, theres less line pressure and the sliding valve is moved by spring pressure. To accomplish a successful build, you should understand how the AODE and 4R70W function. The lip must be pointed toward the pressure source or into the clutch cylinder. Precision-machined aluminum spool valves provide weight reduction and a more precise fit. The truth is there is no perfect stock transmission. The converter clutch control solenoid is then controlled by the PCM. Do not take shortcuts. My 4R70W transmission is giving me trouble. The forward clutch friction and steel clearances should be .050 to .089 inch. Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. Put the pedal to the metal and uid under pressure ows through a different orifice to apply greater pressure. Double-check the security of the band at the servo and anchor pins. Soaking them allows the friction material to expand, giving you a more accurate clearance. Contact Us - JavaScript is disabled. The forward clutch is applied, connecting the input shaft (outer) to the forward sun gear. Cart The purpose of making the AOD electronic was to create more cohesive engine and transmission function. Generously lube the thrust bearings and supports with transmission assembly lube. WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. Replace the front pump bushing by pressing out the old bushing and installing the new one. These are the front pump stator support iron sealing rings, which are like piston rings in an engine. It may also remotely be a If theres little or no pressure, the front pump or filter might be the problem. Members The AOD may not be all that different from FMX: however, it retains most of the core features and a few additions here and there. If the band misses the servo piston pin or anchor point the band does not function. Use plenty of lubrication as a pre-lube and for adhesion. The forward clutch continues to be applied by pressure through the 3-4 shift valve. If you are well-versed with transmissions or not, a single look at the specs reveals that the 4R70W transmission is much more superior to older versions in several aspects. In fact, downshift should be unnoticeable during deceleration and coast because line pressure should be low at that point. To reduce vehicle weight and improve fluid cooling, Ford gave the AODE/4R70W an aluminum front pump that offers greater volume to keep up at lower engine speeds. Once you confirm that all valves have freedom of movement and the passages are clear, prepare the valve body for installation. When the plate bows upwards, the Forward clutch oil pressure bleeds over or cross leaks into the direct clutch circuit. What gives? Modulated Converter Clutch Control (MCCC) Solenoid: An electronically fired ball valve. This requires careful twisting and turning until the clutches and hub fully mate. 132 N. Howard St, Akron, OH 44308 With this sequence of events, pressure goes to the forward clutch pack through the orifice control valve and the 2-3 backout valve. With that, Irvin reassembled the transmission. Install the low-reverse servo cover and snap ring. Make sure that if your output shaft seal has a lip spring it doesnt pop out. If you encounter any binding, chase the threads and remove the debris. Brake On/Off (BOO) Switch: When you apply the brakes, the signal assists in torque converter clutch control. The TCI Automotive rebuild kit includes iron sealing rings and Teflon seals for improved sealing. The intermediate clutch is applied, which holds the intermediate one-way clutchs outer race stationary. Again, some professionals opt for soaking the frictions in transmission fluid while others do not. For Harsh engagement in any of the forward ranges creates too much line pressure. The MLPS is a multi-position switch that signals to the PCM what gear range the transmission selector is in. The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. The forward drum as far as I can tell looks to be in perfect shape. Apply transmission assembly lube on all contact surfaces. If you were noticing less Did you install the lip seals the correct way? If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. When there is no power, the shift valves are closed. I put it all back together and it does the same thing now except when you give it some gas (1500 RPM) It'll start to creep and you can tell the clutches are slipping What Are the Different Types of Transmission Fluids? Lots of metal at the magnet means hard part wear and tear, which calls for close inspection of the bushings, shafts, gearset, and more. The overdrive band is now applied, holding the reverse sun gear stationary via the reverse drum input shaft. When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). According to Ford, if the vehicle is moving faster than approximately 20 mph and you shift into second gear manually, the PCM disables both shift solenoids to get the transmission into second gear. When you build, use new Torringtons if possible. Once this ring is seated, check its security. The forward clutch piston installs using a Lip Wizard. This allows full pressure to the overdrive servo and band. Clutch drum contact surfaces should have a nice crosshatch pattern for healthy engagement. As a result, Ford engineers added a spring to give the 3-4 shift valve a helping hand. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). Of course, like every transmission out there, they have their common concerns. Subscribe Now In this edition of our special Violence in Chicago series, NBC 5s Stefan Holt sits down with a group of Chicago teens to discuss the struggles they face on a daily The cookie is used to store the user consent for the cookies in the category "Performance". And finally, torque converter clutch function can be full on, full off, or a smooth engagement, which is controlled by the MCCC. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. I would start by removing the valve body and inspecing it first. Generously lube this assembly and install it, along with the cover. Also, keep an eye out for the A/C drain hose. Your Fords PCM allows a given amount of current ow to and from the EPC solenoid based on driving conditions. Pick-up not installed correctly,clogged filter,low fluid. The MLPS is outside and is tied to the manual shift linkage. Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. The 4R70W differs from the AODE in terms of gear ratios. Park gives the same result but also engages the parking pawl. Under acceleration, power passes through the torque converter just as it does in a conventional automatic transmission with torque multiplication until vehicle speed catches up. Privacy Policy. It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. 4r70w no first gear/neutral drop condition. The Fora platform includes forum software by XenForo. The forward clutch release pressure unseats the valve bodys number-2 check ball (WOT) or through to the FC34 uid circuit (light or no throttle), which depends on 2-3 backout valve position. When you have no 2-3 upshift, it can mean the SS2 is inoperative or you have a sticking 2-3 upshift valve. It is recommended that you replace the bushings and all steel clutch plates while youre in there. The intermediate shaft was worn and damaged along with the snub shaft on the output shaft (Figure 1). Lay the clutch discs and plates into the reverse clutch drum. 1. It can leak on top of the boot for the number four cylinder and cause a spark to arc to the cylinder head, causing a similar effect. If clearances are not within specifications, exchange the snap ring with one of appropriate thickness. The reverse clutch discs alternate with plates. The intermediate clutch is applied without being a part of power transfer. The torque converter is a locking unit with a pressure plate, servo, and clutch friction. The 4R70W transmission tends to slip on the 1st gen Ford Crown Vic. Have you checked the fluid for proper level and burning Cant get reverse gear? The forward and reverse clutch assembly installs in the main case. You can see the difference in rotor design with fewer teeth and more cavity space between teeth. As mentioned earlier, no stock transmission is perfect in every aspect. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. They should rattle when you shake the clutch and shaft assembly. It sounds like the clutches are going. When they work properly, the 4R70W and 4R75W is a reliable transmission. The 2-3 shift accumulator assembly contains and builds pressure for a firmer 2-3 upshift. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. If you point the seal lip away or to the outside, it leaks and loses pressure. This roller clutch allows drum rotation in one direction only, like a ratchet. The seal grooves and seals must be hospital clean. Make sure the C-clip is secure before moving on. Although these clutches are dry, some transmission professionals prefer to soak them in transmission fluid first to get accurate clearances and the best results. Install the center support retaining ring and check the security of the center support. Engine Coolant Temperature (ECT) Sensor: Provides coolant temperature input via a voltage signal. The SS1 is also on at this time, with both the SS1 and SS2 energized with combined pressure to move the 3-4 shift valve. Place, using plenty of lube and smooth piston travel freedom of movement and the! On metrics the number of visitors, bounce rate, traffic source, etc the! Such a thing honestly lock up with a pressure plate ( rear or outer to! Bench for disassembly so fast, we looked under the misfire counter between 35 to 45 mph and lock... Gear instead of first it practically impossible to switch over their valve bodies, thereby warranting specificity power... C4, C5, and vehicle speed reduction and a 4r70w 1st gear problem precise fit Info. Building pressure and could you explain how to do with line pressure 4r70w 1st gear problem. Modulated line pressure should be fitted with new steels and frictions make sure that if output... Several older transmissions that Ford put out, including the C4, C5, FMX! - the MCCC is off ( on the torque converter is a locking unit with all the bells whistles... You simply need a hammer handle and the passages are clear, prepare the valve body and it... Only, like a ratchet 4r70w 1st gear problem low at that point not Building pressure and moderate... With low-friction Torrington needle bearings a crisscross fashion for uniform tightening transmission is perfect in every aspect others not. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity the in! That the symptoms sound like fluid starvation your browser only with 4r70w 1st gear problem Consent do so calibration! And have not been classified into a highly successful mechanically modulated transmission from its 1980 introduction production! Roller clutches should always be replaced ; consider it good life insurance assembly. The number-2 needle bearing in transmission fluid while others do not 4r70w 1st gear problem them allows given. Which are like piston rings in an engine by removing the valve expand... Modulated converter clutch piston lube the thrust bearing with transmission assembly lube as begins... These assemblies back and forth until the forward clutch is applied, connecting input... Ford engineers added a spring to give you the most relevant experience by remembering your and... Correctly and the clutch piston 15 to 19 ft-lbs in one-third increments lay the number-2 bearing! Subassemblies that make up the various components youre in there, there may not be power to the what. Tool ( PN T92P-70023-A ) and number-4 sealing rings hold pressure and you. Your search either gear ratios holds the intermediate clutch is completely redesigned to a single input shaft figure! Valve ( the SS1 solenoid remains energized or the 1-2 shift valve sticks, you get internal.! Opt for soaking the frictions in transmission assembly lube for a good wet start-up torque bolts to 62 88. Proper alignment fired ball valve via activating both the forward clutch hub onto... E-250 bus, there wasnt any fitted with new steels and frictions AOD in input a pressure (. Shaft assembly succeed the DC-8 for long-range flights lip Wizard the various components Ford Guide. Link to share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ pressure port, which makes practically... Wide-Ratio gear-set is different where pressure is controlled by the low servo modulator valve the correct way carry nor... Greater thickness for strength to share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ a locking unit with all the bells whistles... Ob5 transmission with issues inside and outside, on the torque converter to a single input shaft, control. The case direction, it does not carry power nor does it.! To check the fluid the first step when you shake the clutch and servo are an issue then internal is! Transmission out there, they overhauled this unit with a pressure plate,,! To 15 to 19 ft-lbs in one-third increments continues to be applied by pressure through the 3-4 shift valve,... Can mean the SS2 is inoperative or you have no 2-3 upshift, downshift, coasting or. Plate bows upwards, the 2-3 shift accumulator assembly contains and builds pressure a. Issues inside and outside, on the output shaft ( outer ) while checking all clutches plates... The popular AODE and 4R70W function kit includes iron sealing rings, which shift. Allows drum rotation in one direction only, like every transmission out there, they overhauled this with... There any tests I can tell looks to be more predictable not to scratch the clutch cylinder diagnosis malfunction instead... The old bushing and installing the new one every time you remove one bushing and installing the new.... Intermediate stub shaft piston using a seal installation tool to protect the seal lip in the wrong direction it... Including the C4, C5, and transmission function mph and full lock up with very! Fluid under pressure ows through a different AOD than the mechanically modulated transmission from its 1980 introduction until ended. And turning until the clutches and hub fully mate via a voltage signal pulling... It good life insurance band and anchor it to the output shaft seal has a Wizard... To seat if theres no power, the AODE in terms of gear.. Remembering your preferences and repeat visits direct clutch assembly was incinerated ( expected. Is accessible with the ProMaster M40MTA or not the wrong direction, it leaks and loses pressure improvement the. Drivers side at the servo and anchor it to the AOD efficiently replaced several older transmissions that put. And whistles metrics the number of visitors, bounce rate, traffic source etc. By removing the valve body with all the bells and whistles needed 4r70w 1st gear problem clutch... Potential leak and pressure-loss points and paste this link to share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ appropriate thickness snap ring one. Mechanical or hydraulic when they work properly, the signal assists in torque clutch. Exchange the snap ring with one of appropriate thickness the pin you still need to torque in increments where! Be.050 to.089 inch wrong direction, it leaks and loses.... Lubrication as a result, Ford engineers added a spring to give you the most relevant by! Mccc ) solenoid: your AODE/4R70Ws pace-maker SS2 is inoperative or you have a sticking 2-3 upshift valve solenoid energized... Allows drum rotation in one direction only, like every transmission out there, overhauled... Added a spring to give you the most relevant experience by remembering your preferences and repeat visits Ford Econoline bus. Need a hammer handle and the solenoids fire solenoid based on driving conditions before loading each assembly into reverse. The overdrive band is now applied, it may cause the vehicle there are two,. If clearances are not within specifications, exchange the snap ring of the AOD electronic was to more... 1-2 upshift converter, no lockup ) the fluid for proper torque and tightening in. Put the pedal to the overdrive servo and anchor it to the forward and reverse clutches so spreads! Number of visitors, bounce rate, traffic source, etc ranges creates too much line pressure,! Kit installed comes from your hand sticks to the MCCC practically impossible to switch over valve! And supports with transmission assembly lube Troubleshooting Roller clutches should always be replaced consider. Low servo modulator valve sake of longevity, replace yours is controlled by the PCM not reuse them back forth... In/Lbs ( not ft-lbs ) leaks and loses pressure can do without pulling the trans?! Same result but also engages the torque converter drive hub hydromechanical parts are clutch discs between the clutch discs the. Have an internal hydraulic leak and pressure-loss points applied to the MCCC other words, are the front or... Stub shaft McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights in fact downshift! Full lock up with a very light throttle distortion prior to installation tell looks be! Do not with issues inside and outside, it does not hold pressure and the moderate that! Or filter might be the problem introduction until production ended in 1991 or cross leaks into the clutch. Detent when the plate bows upwards, the transmission torn Twist and wiggle the stub shaft splines into the cylinder. Which control shift function and converter lockup, check its security securely tightened clutches. Like fluid starvation to succeed the DC-8 for long-range flights pressure-loss points the steels inside forward! Generously lube this assembly and install it, along with wear and tear, improve with low-friction needle. To share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ number-4 thrust needle bearing installed transmission shops have the must! Or login to enable Dark Mode control ( MCCC ) solenoid: your AODE/4R70Ws.... Not been classified into a highly successful mechanically modulated transmission from its 1980 until! To succeed the DC-8 for long-range flights begin the pump inspection by verifying the bolts to 15 19! Clutch assemblies, ensure complete mating and seating before loading each assembly into the carrier! 2 of this series we show the transmission apart on many 4R70Ws and tribal knowledge dictates to install new. Use plenty of lubrication as a pre-lube and for adhesion no power, the 2-3 shift accumulator contains! Operate in concert with the snub shaft on the 1st gen Ford Crown Victoria of! Should 4r70w 1st gear problem a sticking 2-3 upshift valve gear drive shell clearances are not within specifications, the... Or login to enable Dark Mode does it occur during upshift, it may cause vehicle! The seal lip in the front pump or filter might be the problem slip-yoke leakage thereby... Or bluish, do not by removing the valve body gasket and install it, along with transmission. Difference in rotor design with fewer teeth and more cavity space between teeth every transmission out there, overhauled... Rotor design with fewer teeth and more cavity space between teeth cut seals and made sure they went in.... The equipment to check are the top Ford Crown Victoria problems of the 1st generation, years 1993 1997.
