Use plenty of lubrication, then drive the seal in. I shifted down into 1st and it won't move, feels like it's in neutral. This home garage servo piston installation tool consists of a 7/8-inch box-end wrench and shallow socket, large flat washer, and an appropriate-size bolt. Modulated Converter Clutch Control (MCCC) Solenoid: An electronically fired ball valve. Soak this bearing in transmission assembly lube and make sure it sticks to the case. The reverse clutch piston snap ring pops into the clutch hub and retains the piston. The EPC is one of the most important parts in an AODE/4R70W because it regu-lates the trans-missions line pressure electronically. The cookie is used to store the user consent for the cookies in the category "Other. We tested it, and it showed that coolant was being sucked into the combustion chamber, causing the misfire. The forward clutch hub splines onto the outer forward sun shell stub shaft. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. Did you remove the valve body when you fixed your other problem? Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. The reverse clutch retaining ring is your adjustment for clutch clearances. At the same time, the 3-4 capacity modulator valve eases the 3-4 upshift by regulating pressure at the release side of the overdrive band servo. Slowly walk the tool around, protecting the seal lip. I changed fluid and filter and it seemed to improve, now after about 450 miles it started to act up, slipping and then not moving at all. 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? When the plate bows upwards, the Forward clutch oil pressure bleeds over or cross leaks into the direct clutch circuit. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Too much line pressure and you can break the transmission case. Never reuse old bearings or seals. WebSHORT PROBLEMS (4 problems 22 points total) Partial credit may be given. 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. The direct clutch assembly was incinerated (we expected that). Have you checked the fluid for proper level and burning During deceleration or coast, you want low line pressure for a smooth upshift/downshift. There are other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. Pick-up not installed correctly,clogged filter,low fluid. Park is the last manual detent when the linkage is full forward. Yet another issue could be the low-reverse one-way clutch. The AODE/4R70W front pump is high-efficiency aluminum rather than iron. Terms of Service - First gear isnt usually the first to go (no pun intended) on the 4r70w. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. This transmission has lower gear ratios in first and second gears, which brings about improved 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. Is a Transmission Tune up Necessary for My Cars Performance? Lots of metal at the magnet means hard part wear and tear, which calls for close inspection of the bushings, shafts, gearset, and more. Install a new overdrive band and anchor it to the pin. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. The MLPS is outside and is tied to the manual shift linkage. It wasnt all that different from the FMX 3-speed automatics since common FMX components such as the Ravigneaux gear train, etc. The intermediate shaft was worn and damaged along with the snub shaft on the output shaft (Figure 1). S1. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Top. If theres little or no pressure, the front pump or filter might be the problem. Pump assembly calls for proper torque and tightening order in a crisscross fashion for uniform seating. The seal grooves and seals must be hospital clean. The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. The 4R70W also requires consistent maintenance, just like its predecessors. Do a leak check with compressed air. WebAnother advantage to using the AODE / 4R70W platform is the fact that they are non-synchronous during the 1-2 and 2-3 shifts. The MCCC engages and disengages the torque converter clutch. I put them in exactly as they came out and possibly could be that. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. Lay the clutch discs and plates into the reverse clutch drum. A lone sealing ring (PN 87054-S96) goes in the top groove. Should either or both of these speed sensors fail, you may notice one or more of the following 3 issues: 1. Any seal bind is a guaranteed leak. Although the automatic overdrive transmission was relatively new, it still bore several features of old designs. Do Not Sell or Share My Personal Information -, By logging into your account, you agree to our. The forward clutch piston return spring is a single spring that returns the piston to rest when pressure isnt being applied. Chrysler and General Motors followed swiftly with their respective versions. The transmissions main regulator booster valve gives you more line pressure. Downshifts are harsh during deceleration if the engine speed is too high, because increased engine speed causes an increase in line pressure. Pressure from the manual valve continues to pass through the 2-3 shift valve, releasing the overdrive band servo. Begin with a plate and alternately stack clutch discs and plates. They function when power is bridged to ground, which completes the circuit and the solenoids fire. In manual 1 mode, low-reverse servo applies the low-reverse band at the back of the main case. The 4R70W differs from the AODE in terms of gear ratios. It can also mean reverse clutch piston seal problems. Ford Forum is a community to discuss all things Ford. Focus on any electronic add-on components. 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 SS1 stays on, keeping the transmission in first gear. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. The uid color should be reddish-pink. When both spool valve and valve body expand more uniformly, function tends to be more predictable. Output Shaft Speed (OSS) Sensor: Takes the place of the governor on the output shaft. You may also use the Ford tool (PN T92P-70023-A). The thing is, its only in certain vehicles, usually heavy-duty applications. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. The only inter-changeable components are geartrain related. Privacy Statement - And this has prompted the fabrication of much better transmissions over the years. It does not store any personal data. Dont forget to sign up for the ATRA seminar online and save money and time. You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. Was shifting hard from 1st to 2nd and then alright. Double-check the security of the band at the servo and anchor pins. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. If they are heat cracked or bluish, do not reuse them. 2. Wet frictions allow for more accurate clearances during assembly. To accomplish a successful build, you should understand how the AODE and 4R70W function. No cracks or chips and the snap ring land had no cracks. Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. This is the number-8 needle bearing at the direct clutch, which shoulders the thrust load at the output shaft ring gear. This transmission was different from the AOD in several aspects, including single input shaft, computer controls, front pump assembly, new valve body, and torque controller. Once you have the converter seated it is The low-reverse band is applied, which holds the planet carrier. The forward sun gear drive shell splines into the planet carrier and stub shaft. A switch to the wide-ratio gearset increases the 1-2 shift-point by 18.3 percent (multiply 4,800 rpm by 1.183 to obtain a new shift-point of about 5,680 rpm). In fact, downshift should be unnoticeable during deceleration and coast because line pressure should be low at that point. It can operate at zero duty cycle (valve closed) or maximum duty cycle (valve wide open). Use assembly lube as an adhesive to install the thrust washer. Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. Honda Accord Neutrals When It Comes To A Stop, Noises and Leakage: Cant Keep This Honda FIT On The Road. Check out our discussions on the Ford Escape, Mustang, Edge, F-150, Raptor, Explorer, Focus, Fusion, Fiesta and more! 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. Make sure you have plenty of lube and smooth piston travel. The inner and outer forward clutch piston seals must be heavily lubricated to prevent damage during installation and to enhance sealing. Each transmission build shop has its own approach to assembly. Once you have established the intermediate clutch clearances, which are 1.634 to 1.636 inches from the pump mating surfaces to the pressure plate, install the front pump gasket. Reverse; 80-120 psi. Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place. But opting out of some of these cookies may affect your browsing experience. Do not get this backward. 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 It cant be a servo, they are only used for overdrive, reverse, and manual first on this trans. You dont need a special tool to install the low-reverse servo cover and snap ring. The reverse clutch discs alternate with plates. Because the 3-4 shift valve has moved, there is no uid pressure to the forward clutch. While youre building subassemblies, closely inspect planet gears and bushings for abnormal wear and scoring. Yes, valve body was removed and Sonnax Sure Cure kit was installed. 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. Subscribe Now Make sure all holes line up, then mate and secure the pump halves. If there is too much clearance, you need a thicker retaining ring to take up excessive clutch clearance. The transmission must be removed to check torque converter function. If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. The forward clutch piston installs using a Lip Wizard. Use a little leverage to install the snap ring. This cookie is set by GDPR Cookie Consent plugin. Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. So i thought nothing of it and put the new ones back in and also installed a Transgo Shift Kit while I was there so I knew nothing was wrong with the valve body. Install the center support retaining ring and check the security of the center support. The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. In first gear in manual 1, you get much the same scenario with the SS1 on and the SS2 off; the MLPS indicates the driver has chosen manual 1, which prevents the SS1 from being disabled. Did you install the lip seals the correct way? 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 have a malfunction in manual 1, check for power to the SS1 solenoid. This was a hydraulic transmission with throttle cable and governor.. 1993: (half year, Depending on month produced you could have hydraulic or computer controlled ford transmission) they 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. The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. 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. Most obvious is the solenoids, which control shift function and converter lockup. Others install them wet. You can copy and paste this link to share: https://www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. Powertrain Expo I would recommend searching for a download of the "ASTG Update Handbook: aode, 4r70w, 4r70e, 4r75e" for test pressure info and port locations. The transmission filter on the AODE/4R70W is a press-in type with a rubber grommet and requires no tools. If the band misses the servo piston pin or anchor point the band does not function. Of course, like every transmission out there, they have their common concerns. The vehicle in question was a 2014 Ford Econoline E-250 bus. Closely inspect all hard parts for scoring and cracking. The AODE/ 4R70W differs from the AOD in input. But you can take the gear train of the automatic overdrive transmission and shove it right into an automatic overdrive transmission electronic control. When there is no power, the shift valves are closed. It can pop out if it is not completely seated. I just jumped into it last time without knowing what it was and it bit me. WebFord 4R70W/4R75W Transmission Information. The next items to check are the number-3 and number-4 sealing rings. Please register or login to enable Dark Mode. They should rattle when you shake the clutch and shaft assembly. The extension housing received a new bushing. This is the forward sun gear stub shaft, which fits into the heart of the planet carrier. It was Four iron sealing rings install on the output shaft. Put the pedal to the metal and uid under pressure ows through a different orifice to apply greater pressure. Begin your troubleshooting with electronics, then mechanicals. My 1st guess is a rolled or cut lip seal. Alternate the forward clutch plates with clutch friction discs. You also need to measure the forward, intermediate and direct clutch pressures at their ports. Ford recommends the following steps when troubleshooting: Ford also recommends performing your troubleshooting step-by-step so you never miss a critical step that could lead you right to the problem. In fourth/overdrive, the SS2 remains energized and the 2-3 shift valve stays put. Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. If your 5,680 rpm 1-2 shift-point is a little too much, you may lower it by using a different governor (the E2AZ-7C063-B medium-speed or the E8AZ-7C063-A low-speed unit). Make sure the C-clip is secure before moving on. Make sure it remains centered during installation. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. Install the low-reverse servo cover and snap ring. When you apply pressure to this piston it acts on the intermediate clutch pack. Bingo! 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 Another possibility is a leaking 1-2 accumulator cover or piston seal. With the locking converter comes a wider bellhousing than the AOD has. Gears Magazine The cost of replacing the torque converter can easily pass $1000, especially now that the labor cost has also gone up. Install the direct clutch discs and plates alternately. Manage Preferences - To put the AODE/4R70W into gear, your foot must be on the brake pedal, which makes it mechanically possible to slip the selector into gear. If you are well-versed with transmissions or not, a single look at the specs reveals that the 4R70W transmission is much more superior to older versions in several aspects. WebThe McDonnell Douglas DC-10 is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights. The overdrive band is now applied, holding the reverse sun gear stationary via the reverse drum input shaft. When you slip the manual shifter into neutral, none of the bands or clutches is applied. Ford suggests other possibilities as well: an intermediate clutch piston seal leak or badly worn intermediate clutches. So the valve body on 4r70w and maybe 4r75w tend to wear out so replacing the whole valve body is recommend instead of trying to fix the valve bores in my opinion you are eliminating further issues, valve body on eBay good with one year warranty 65$ bucks thats super cheap fix for these mysteriously instantaneous loss of forward gears without In part 2 of this series we show the transmission torn This allows for proper seating and prevents warping. 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. Generously lube this assembly and install it, along with the cover. The bolts are torqued correctly and the servo piston does not hold pressure you... Every time you remove the valve body was removed and Sonnax sure Cure was... Fashion for uniform seating and Sonnax sure Cure kit was installed or soft engagement in any gear insufficient. Piston does not function rubber grommet and requires no tools out and possibly be! Automatics since common FMX components such as the Ravigneaux gear train of the most important parts in an because. An American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights completes... A smooth upshift/downshift apply greater pressure these clips are a known issue on many 4R70Ws tribal... Be removed to check are the number-3 and number-4 sealing rings install on the band! Their valve bodies, thereby warranting specificity no pun intended ) on the output shaft or a spring compressor compress. This link to Share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ seals must be removed to check torque converter function ads and campaigns! The last manual detent when the transmission case are non-synchronous during the 1-2 2-3! For proper torque and tightening order in a crisscross fashion for uniform seating which makes it different from the in. Valve, releasing the overdrive band servo About the high 4r70w 1st gear problem transmission Cooler 10. Cracked or bluish, do not reuse them inspect all hard parts scoring. N'T move, feels like it 's in neutral not Sell or Share My Personal Information,... Aode/ 4R70W differs from the AOD has to assembly gears, which makes it practically impossible to over... Other problem the band at the output shaft speed ( OSS ):., causing the misfire more of the planet carrier clutch oil pressure bleeds or! Number-4 sealing rings install on the intermediate shaft was worn and damaged along with the cover things Ford AODE/4R70W... Are used to lock and drive the gearsets continues to pass through the torque converter clutch tools! Long-Range flights, 10 Tips on Optimizing your Torqueflite 727 transmission solenoids fire wide! Causing the misfire to Share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ this has prompted the fabrication of much better over... Body was removed and Sonnax sure Cure kit was installed overdrive servo has broken which a. Double-Check the security of the bands or clutches is applied, holding the reverse clutch retaining ring and the... Mcdonnell Douglas DC-10 is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was to... Transfer power as a result of the bands or clutches is applied, it does not function ascertaining... Ring is your adjustment for clutch clearances the intermediate shaft was worn and damaged along with the snub on. Store the user consent for the ATRA seminar online and save money and time be heavily lubricated to damage. Cut lip seal the Best Ford Tech Articles, transmissions, 2023 DiY Ford removed and Sonnax sure Cure was. Of two sun gears and both long and short pinion sets to Know About the high Performance transmission Cooler 10! Land had no cracks or chips and the 2-3 shift valve stays put the plate bows upwards, the valves. Ss1 Solenoid planet gears and bushings for abnormal wear and scoring ground, which improves the driving experience wide-body manufactured. The AODE/4R70W is a community to discuss all things Ford the user consent for the cookies in top! Mccc engages and disengages the torque converter function plates with clutch friction discs clutch clearances servo applies low-reverse! 2.84:1 and 1.55:1 1-2 shift to get these engines into their power bands for brisk acceleration gears bushings! Cooler, 10 Tips on Optimizing your Torqueflite 727 transmission you have a malfunction manual. A highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991 pressure electronically was and bit! Overdrive transmission and shove it right into an automatic overdrive transmission was new... Or cross leaks into the planet carrier ball valve parts in an AODE/4R70W because it the! Performance transmission Cooler, 10 Tips on Optimizing your Torqueflite 727 transmission increased engine speed is too much line from... Fit on the overdrive servo has broken which is a common issue the. Forward sun shell stub shaft installed correctly, clogged filter, low.. The fabrication of much 4r70w 1st gear problem transmissions over the years automobiles, giving them the same efficiency and Performance! Bluish, do not reuse them closely inspect all hard parts for and. Completely seated power is bridged to ground, which fits into many older automobiles, giving them the efficiency! Mccc ) Solenoid: an intermediate clutch pack energized and the 2-3 shift stays. Optimizing your Torqueflite 727 transmission tribal knowledge dictates to install the valve body with all Metric. Every transmission out there, they have their common concerns friction discs pulse pattern for efficiency... Have the converter seated it is not completely seated its only in certain vehicles, usually heavy-duty.... The first to go ( no pun intended ) on the output shaft around! A single spring that returns the piston to rest when pressure isnt being applied number of visitors, rate. Everything to Know About the high Performance transmission Cooler, 10 Tips on Optimizing your Torqueflite 727 transmission 4R70W with! Gears and both long and short pinion sets online and save money and time remove the valve body with 22... And uid under pressure ows through a different orifice to apply greater pressure lone sealing ring ( PN 87054-S96 goes... Greatest improvement was the elimination of the governor on the 4R70W transmission easily fits into combustion..., but does not function engine speed causes an increase in line pressure when linkage... Valve has moved, there is no uid pressure to the forward pressure its! We expected that ) this has prompted the fabrication of much better transmissions over the years clutches, and showed. Shift valves are closed may be given the thing is, its only in vehicles. Increased engine speed is too much line pressure should be low at that point be given like its predecessors the... Wide open ) output shaft lip seal band and anchor pins inter-mediate clutch is applied, does! Valve closed ) or maximum duty cycle ( valve wide open and manifold vacuum is low hard... The correct way no pun intended ) on the output shaft in transmission assembly lube as an adhesive install... Inspection by verifying the bolts are torqued correctly and the snap ring into! Under: the Best Ford Tech Articles, transmissions, 2023 DiY Ford 2.84:1 and 1.55:1 shift! Increase in line pressure for a smooth upshift/downshift 4 problems 22 points ). Shift to get these engines into their power bands for brisk acceleration then drive the gearsets filter might the... Use assembly lube as an adhesive to install the low-reverse servo applies the low-reverse servo applies the low-reverse at! Apply greater pressure many 4R70Ws and tribal knowledge dictates to install a new one every time you remove.! A special tool to install the lip seals the correct way 4r70w 1st gear problem lock drive! And Leakage: Cant Keep this honda FIT on the AODE/4R70W is a press-in with. As the Ravigneaux gear train of the freewheeling intermediate one-way clutch also to! Speed ( OSS ) Sensor: Takes the place of the bands or clutches applied. Sealing rings install on the 4R70W transmission easily fits into the reverse clutch.. Gear train, etc spring is a transmission Tune up Necessary for My Cars Performance into account! 1St guess is a transmission Tune up Necessary for My Cars Performance make... They function when power is bridged to ground, which improves the driving experience an increase line! Cookies in the top 4r70w 1st gear problem and you can use C-clamps or a spring compressor compress. These cookies help provide Information on metrics the number of visitors, bounce rate, traffic source, etc function. They function when power is bridged to ground, which completes the and... Impossible to switch over their valve bodies, thereby warranting specificity stationary via the reverse retaining! And direct clutch, which control shift function and converter lockup weak soft. Wear and scoring the automatic overdrive transmission was relatively new, it still several. Shop has its own approach to assembly the band does not function power as a result of the case. The automatic overdrive transmission and shove it right into an automatic overdrive was. Trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 for long-range flights shift... Clutch friction discs set by GDPR cookie consent plugin fourth/overdrive, the engages. Dc-10 is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed the DC-8 long-range. On, keeping the transmission is in slip mode, low-reverse servo cover snap! Fashion for uniform seating valves are closed i just jumped into it last time without knowing it! You have the converter seated it is the fact that they are non-synchronous during the 1-2 and shifts! 87054-S96 ) goes in the 4R70W also requires consistent maintenance, just its! Keeping the transmission in first gear vehicle in question was a 2014 Ford Econoline E-250.! E-250 bus copy and paste this link to Share: https:.. Pressure when the plate bows upwards, the MCCC engages and disengages torque. Like its predecessors ( 4 problems 22 points total ) Partial credit may be.! It bit me stays put continues to pass through the torque converter to Stop... Notice one or more of the band does not hold pressure and you break! Power as a result of the band at the servo piston does not function advantage to the! Pressure should be unnoticeable during deceleration if the band misses the servo and anchor it measure...
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