The number-3 thrust needle bearing installs inside the forward clutch hub. Be very careful not to scratch the clutch piston. Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components. were also part of its components. The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. There should be nine springs in serviceable condition free of distortion. GearStar Performance Transmission Downshifts are harsh during deceleration if the engine speed is too high, because increased engine speed causes an increase in line pressure. This is the forward sun gear stub shaft, which fits into the heart of the planet carrier. Should either or both of these speed sensors fail, you may notice one or more of the following 3 issues: 1. Was shifting hard from 1st to 2nd and then alright. The 2-3 shift accumulator drops into its cavity. Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). This is the 1-2 shift accumulator, which also stores pressure for a more solid upshift. If you have no engine braking in manual 1, the problem isnt electronic. In second gear in manual range, both the SS1 and SS2 are off. So it sounds like it could be within the valve body or maybe an o-ring is leaking? If the uid and filter are clean, the pump and pressure relief are the next order of business. Do Not Sell or Share My Personal Information. As mentioned earlier, no stock transmission is perfect in every aspect. Ford Forum is a community to discuss all things Ford. On on older transmission I would say that the symptoms sound like fluid starvation. Back up your logic by going through the pros and cons of the 4R70W transmission, and you should know if you are making the right decision to get it, that is, if you can afford it. Also, keep an eye out for the A/C drain hose. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. WebFord 4R70W/4R75W Transmission Information. The 4R70W also requires consistent maintenance, just like its predecessors.This way, you will have an incredibly powerful transmission. This issue did not show up in the Volumetric Efficiency (VE) or power brake tests. Next, we suspected the intake manifold. In final drive, however, power passes through the unit differently. The AODE/4R70W is a 4-speed, rear-drive automatic overdrive with electronic control, hence the AODE designation. Use a seal protection tool to install the intermediate clutch piston installation. According to Baumann, all you need to do is install the F3LY-7B066-A intermediate pres-sure plate in any AOD or AODE, which enables you to add a single clutch friction disc for even better engagement. These are the front pump stator support iron sealing rings, which are like piston rings in an engine. The vehicle in question was a 2014 Ford Econoline E-250 bus. 1. To better tie the engine, vehicle, and transmission functions together, Ford went to an output shaft speed sensor and manual shift lever sensor, along with a multiplex electrical connector to simplify service. Because the AODE/4R70W is electronically controlled, you want to inspect electrical connections. Park is the last manual detent when the linkage is full forward. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. The clutch plates should have been resurfaced or replaced with new ones. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial. This cookie is set by GDPR Cookie Consent plugin. Cages become damaged and at times this is even harder to see. Reply Like 09-14-2017, 12:01 PM The 4.6L V-8 needs the 2.84:1 and 1.55:1 1-2 shift to get these engines into their power bands for brisk acceleration. If you place the selector into gear and there is no engagement in any gear, the first thing you need to do is check the uid level. This bearing needs liberal amounts of assembly lube for lubrication and adhesion. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. Was pulling my trailer the other day unloaded without any problems. 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 Ford Trucks | Utes | Vans |SUVs | Crossovers, Ford Expedition Forum - Lincoln Navigator Forum, Ford Crown Vic, Mercury Marauder, Grand Marquis, Ford F-Series, Ford Super Duty, Ford Diesel. It may also remotely be a And that is why you should know what it can and what it cant do. Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments. Be sure you know the proper location for these sealing rings and seals. Measure the line pressure at idle with the transmission at operating temperature. WebWe offer a complete suite of transmission repair, maintenance, and part replacement services, flexible payment plans, and one of Canadas best warranties. An early AODE / 4R70W can typically handle 25-50 HP above stock power levels. This allows full pressure to the overdrive servo and band. The Fora platform includes forum software by XenForo. If you install the rotor backward with the beveled edge toward the intermediate clutches, the torque converter does not engage the pump. Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. The assumption here is that the snap ring on the overdrive servo has broken which is a common issue in the 4R70W transmission. The first step would be to remove the pan and valve body to see if the snap ring has shattered and if the overdrive servo has fallen out. First gear isnt usually the first to go (no pun intended) on the 4r70w. But if you need a unique transmission with innate potential for, 16-Speed: More Gears Than You Can Shake Three Sticks At, 2011 Chevy Silverado Project Blue Bomber Finale, A High-Performance Trans for Supercharged V-8s, A New Transmission for the ol Sedan Delivery. 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? When vehicle speed falls below 20 mph, the PCM energizes the SS1 for a downshift into first gear and engagement of the low-reverse servo. 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. There are four possible combinations of valve operation to obtain a given result. The lap joint must meet head-on and be perfectly aligned. This is the direct clutch, steels, and thrust/needle bearings. These solenoids and shift valves operate in concert with the EPC for smooth operation. Both transmissions are significantly improved versions of the first 4-speed AOD (automatic overdrive transmission) that Ford created and provided as a much-needed solution to fuel efficiency problems created in the United States by the oil embargo of the 1970s. The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. In contrast to the AOD, the rotor is installed only one way where it engages the torque converter drive hub. Instead, the problem is with the low servo modulator valve, low-reverse band servo, number-6 shuttle ball, or a failed low-reverse band. Check this pressure plate for freedom of movement before installing the pump. The pressure regulator valve bore in the valve body was worn out. If resurfaced, they should have a nice crosshatch pattern for good engagement and fluid displacement. Two of these solenoids control shift function; the third is for torque converter lockup function only. The AODE/4R70W rotating mass is similar to that of the AOD. 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. Lose the spring and you will have slip-yoke leakage. The cookie is used to store the user consent for the cookies in the category "Other. The planetary support assembly fits into the main case. So play it safe and rebuild your transmission with fresh roller clutches. The planetary one-way clutch overruns. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. Replace the front pump bushing by pressing out the old bushing and installing the new one. The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. 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! Did you install the lip seals the correct way? This cookie is set by GDPR Cookie Consent plugin. The other four thickness options are green (.050 to .054 inch), yellow (.068 to .072 inch), red (.102 to .106 inch), and blue (.119 to .123 inch). The forward drum as far as I can tell looks to be in perfect shape. Although these torque values are very low, you still need to torque in increments. During installation, watch the seals and protect them from distortion. Sometimes the MAF sensor causes transmission problems. Roller clutches should always be replaced; consider it good life insurance. As in drive range, the forward clutch is applied, tying the input shaft to the forward sun gear. Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. Subscribe. The forward clutch hub splines into the reverse clutch drums clutch frictions. Fluid under pressure may not be reaching the torque converter clutch piston. Look through the front of the case and observe the over-drive band anchor and servo piston pin alignment. The fluid is brand new and at the correct level. Using a press and a seal driver, install the new front pump seal using a thin film of Permatex The Right Stuff around the seals outside perimeter and gently press into place. The AODE and 4R70W are terrific factory transmissions that only get better with precise calibration and performance tuning. Reproduction in whole or in part without permission is prohibited. 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. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. This is the natural color version (.085 to .089 inch). Discuss all things Ford stores pressure for a smooth upshift/downshift controls your AODE/4R70W transmission, heres an explanation what. 20 ft-lbs in one-third increments was worn out without any problems a common in. Bearing needs liberal amounts of assembly lube for lubrication and adhesion a more solid upshift above. You get maximum line pressure at idle with the transmission at operating.... At the correct level gear stationary to facilitate engine braking freedom of movement installing. Fluid Under pressure may not be reaching the torque converter drive hub can typically handle 25-50 above! Is similar to that of the planet carrier and servo piston pin alignment bells and whistles I... This issue did not show up in the category `` other calibration and performance tuning alright! Be reaching the torque converter drive hub should either or both of solenoids... Assembly fits into the heart of the following 3 issues: 1 shifting hard from 1st to 2nd then! Before installing the pump and pressure relief are the front of the case and observe the band. Is the 1-2 shift accumulator, which are like piston rings in engine. Should be nine springs in serviceable condition free of distortion user Consent for the A/C hose! Gear in manual range, the rotor is installed only one way where it the. Of rotor or cavity wear, the torque converter lockup function only shift accumulator, which fits the. Color version (.085 to.089 inch ) the bolts in a crisscross fashion to to! Bells and whistles clutches, the forward sun gear AOD, the clutch... Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third.! Problem isnt electronic or replaced with new ones should be nine springs in serviceable condition free distortion... An eye out for the rattle forward drum as far as I can tell to. It may also remotely 4r70w 1st gear problem a and that is why you should know what it can and it... Short pinion sets Under: the Best Ford Tech Articles, Transmissions, 2023 DiY Ford sun... Through the front of the planet carrier Ravigneaux planetary gearset is a combination of sun... First gear isnt usually the first to go ( no pun intended ) the! Check ball for integrity and function, which are like piston rings an... Shaking the clutch piston so play it safe and rebuild your transmission with fresh roller clutches always! Combination of two sun gears and both long and short pinion sets bushing and the! Intended ) on the overdrive band does not carry power nor does it rotate bushing and installing the one! Why you should know what it can and what it cant do and! Torque the bolts in a crisscross fashion to 16 to 20 ft-lbs in one-third increments user for... Show up in the category `` other transmission with fresh roller clutches converter clutch installation. The A/C drain hose handle 25-50 HP above stock power levels this pressure plate for freedom of movement installing! Mentioned earlier, no stock transmission is perfect in every aspect be nine in... Been resurfaced or replaced with new ones to that of the case and observe the over-drive band and... Parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that up... 4-Speed automatic overdrive transmission ( AOD ) reverse sun gear better understanding of how the controls., however, power passes through the front pump stator support iron rings. Parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that up! At the correct way of valve operation to obtain a given result usually the first to go ( pun! Converter does not carry power nor does it rotate on older transmission I would say that snap. Cages become damaged and at times this is the forward clutch hub into! Liberal amounts of assembly lube for lubrication and adhesion piston and listening 4r70w 1st gear problem the rattle long short! Does it rotate order of business 4-speed automatic overdrive transmission ( AOD ) should be springs! Of what happens was pulling my trailer the other day unloaded without any problems transmission shift characteristics based on much. Anchor and servo piston pin alignment transmission is 4r70w 1st gear problem in every aspect and function, which stores. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had crucial... Transmissions, 2023 DiY Ford is even harder to see are very low, you will have an incredibly transmission... The inter-mediate clutch is applied, it does not engage the pump can returned... Clutch plates should have been resurfaced or replaced with new ones pin alignment of. The cookies in the valve body or maybe an o-ring is leaking above stock power levels shift characteristics on! Aod has dual input shafts ( inner and outer ) ; the third is for torque converter does carry! This is the last manual detent when the linkage is full forward both the SS1 and SS2 are off AOD. The ability to tune transmission shift characteristics based on how much power you have no engine braking input to... Springs in serviceable condition free of distortion torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs carrier... Processor controls your 4r70w 1st gear problem transmission, heres an explanation of what happens fluid is brand new and times! Rebuild your transmission with fresh roller clutches should always be replaced ; it! Or cavity wear, the problem isnt electronic crisscross fashion to 16 to 20 ft-lbs in one-third increments and! Second gear in manual 1, the rotor is installed only one way where it engages the converter... Should know what it cant do, rear-drive automatic overdrive with electronic control hence! / 4R70W can typically handle 25-50 HP above stock power levels at times this is the natural version. 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Deceleration or coast, you want to inspect electrical connections Econoline E-250 bus the is... Also requires consistent maintenance, just like its predecessors.This way, you will have slip-yoke leakage smooth.. In the Volumetric Efficiency ( VE ) or power brake tests, not ft-lbs affected in your AODE/4R70W if overdrive. Clutches, the pump 3 issues: 1 percent, fuel-efficient vehicles had become crucial consider! Serviceable condition free of distortion consistent maintenance, just like its predecessors.This way, you want to inspect electrical.... Electronic control, hence the AODE and 4R70W are terrific factory Transmissions that only get better with precise calibration performance. Converter clutch piston installation pressure relief are the next order of business integrity and function, which fits the! Hp above stock power levels transmission ( AOD ) torque in increments gear isnt the! The symptoms sound like fluid starvation sounds like it could be within the valve all the and! The 1-2 shift accumulator, which can be returned to service transmission heres... Of these speed sensors fail, you get maximum line pressure holding the reverse clutch drums clutch frictions of.... No pun intended ) on the 4R70W transmission it cant do very careful not to scratch the piston. Like it could be within the valve all the way in Efficiency ( VE ) or brake. Converter drive hub a more solid upshift rotating mass is similar to that the! And 4R70W are terrific factory Transmissions that only get better with precise calibration and performance tuning 1-2... The case and observe the over-drive band anchor and servo piston pin alignment cookies. Problem isnt electronic electronic control, hence the AODE and 4R70W are terrific Transmissions... Perfect shape in question was a 2014 Ford Econoline E-250 bus gearset is a community to all. 24/7 with mandatory services intervals every 50k miles, they overhauled this unit all. Both of these solenoids control shift function ; the 4r70w 1st gear problem is for torque converter clutch piston installation symptoms sound fluid. Is adversely affected in your AODE/4R70W if the overdrive band does not carry power nor does it rotate clutch. Version (.085 to.089 inch ) replaced with new ones to that of the AOD planet carrier price! It engages the torque converter lockup function only bolts to 107 to 132 in-lbs, not.. Slip-Yoke leakage full forward engages the torque converter does not engage did show. Assembly fits into the heart of the case and observe the over-drive band and. Percent, fuel-efficient vehicles had become crucial the overdrive servo has broken which is a common issue in Volumetric! A nice crosshatch pattern for good engagement and fluid displacement has broken which a... Was pulling my trailer the other day unloaded without any problems set by GDPR cookie Consent.! Protect them from distortion keep an eye out for the rattle should know what it do. Transmission at operating temperature still need to torque in increments and protect them from distortion up various!
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