The clutch plates should have been resurfaced or replaced with new ones. You simply need a hammer handle and the moderate pressure that comes from your hand. Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. 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. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". 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. 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. But if you need a unique transmission with innate potential for overwhelming performance and zero need to mess with disagreeable old-school controls or throttle valve cables, the 4R70W remains an excellent place to start. We also use third-party cookies that help us analyze and understand how you use this website. Recently, I did some research at my friend Rodgers shop in Miami, FL. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. 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. We tested it, and it showed that coolant was being sucked into the combustion chamber, causing the misfire. Air-Conditioning Clutch (ACC): This signal controls the idle speed and electronic pressure control (EPC) input, which affects the shift schedule. Its always good to soak frictions in transmission fluid prior to installation, although we have not done that here. A bad or failing solenoid may cause the vehicle to experience hard or erratic shifting when slowing down or coming to a stop. When both spool valve and valve body expand more uniformly, function tends to be more predictable. By 1980, Ford created the 4-speed automatic overdrive transmission (AOD). Replace the front pump bushing by pressing out the old bushing and installing the new one. If you point the seal lip in the wrong direction, it does not hold pressure and the clutch pack does not work. He knows that I have been chasing the planetary and shaft damage issue for a while. Do Not Sell or Share My Personal Information. This shaft operates inside the outer stub shaft. Baumanns Torque-Compensation feature tunes the transmissions hydraulic control to the engines power characteristics. The two direct clutch scarf-cut sealing rings must properly lap or they will not seal. Most obvious is the solenoids, which control shift function and converter lockup. Where it differs is the torque converter clutch in lockup to the direct clutch, planetaries, and output shaft. From this point, shift-point control can be handled using the methods outlined in the standard Baumann Engineering valve-body recalibration kit manual. This keeps the transmission in first gear. If you are missing any shifts, begin your search with electronics: the throttle position sensor, mass air sensor, distributorless ignition, vehicle speed sensor, wiring, shift solenoid function, manual shift switching, and the PCM. Yes, valve body was removed and Sonnax Sure Cure kit was installed. Also, did you use seal protectors to install the pistons? If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. The AODE/ 4R70W differs from the AOD in input. Parts: 330-434-0104 Change Your Address, Yes, I would like to receive emails from Gears Magazine. The RDI was ordered and taken to the bench for disassembly. The intermediate stub shaft splines into the planet carrier. The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. Is there any tests I can do without pulling the trans first? Use a little leverage to install the snap ring. It can pop out if it is not completely seated. Although your AODE/4R70W project may not appear to need it, its a good idea to replace certain hard parts such as the Belleville clutch piston return spring. The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. We also noticed it was misfiring when we took off from idle at 4 to 6 mph (Figures 2 and 3). If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. First gear, the solenoid A and the pressure control solenoid PCS involved. As the 4R70W evolved to the 4R75W, an input shaft sensor was added. Account. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. 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. First gear isnt usually the first to go (no pun intended) on the 4r70w. Could have rolled a lip seal. It is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. Ring thicknesses are .060 to .064, .074 to .078, .086 to .092, and .102 to .106 inch. If theres no power to the EPC, you get maximum line pressure holding the valve all the way in. The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. You dont want to feel downshift. If you dont have access to fresh clutch plates, inspect and resurface existing plates. Rollers become pitted, and this isnt always visible. Generously lube the thrust bearings and supports with transmission assembly lube. The AOD has dual input shafts (inner and outer); the AODE/4R70W has one, which splines into the forward clutch. If the downshift solenoid has any issues, it may cause the vehicle to behave erratically when downshifting. If you were noticing less When the torque converter clutch is disengaged, power goes through torque multiplication through the torque converter. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. There is a pronounced limit to its power and torque, and overloading it could mess things up. When you apply pressure to this piston it acts on the intermediate clutch pack. What makes the AODE and 4R70W different from the AOD is the locking torque converter with a conventional friction clutch instead of the locking overdrive unit. The AOD efficiently replaced several older transmissions that Ford put out, including the C4, C5, and FMX. The direct clutch should be fitted with new steels and frictions. And by the time the price of oil rose about 400 percent, fuel-efficient vehicles had become crucial. Before mating them, make sure all contact surfaces are clean. Double-check the security of the band at the servo and anchor pins. Theyre either on or off or on/off in a duty-cycle (pulse) pattern. 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. The detent cam and roller hold the manual shift control in a given position. Install the number-7 thrust needle bearing, also known as a Torrington bearing, along with the number-7 bearing support, which is a washer and not a bearing. The next items to check are the number-3 and number-4 sealing rings. Email: [emailprotected] And that is why you should know what it can and what it cant do. This is the forward sun gear stub shaft splined into the planet carrier with the number-5 needle bearing installed. The same thing applies to automobiles with the AOD Electronic Controls in the 1990s. The MCCC is off (on the torque converter, no lockup). Make sure the old filter seal has been removed, which is an easy item to overlook. To accomplish a successful build, you should understand how the AODE and 4R70W function. Use plenty of lubrication as a pre-lube and for adhesion. Vehicle Speed Sensor (VSS): A magnetic pickup (Hall Effect) that works with the OSS to fine-tune transmission function. 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. Closely inspect all hard parts for scoring and cracking. Electronically triggered solenoids are simple electromagnets. An early AODE / 4R70W can typically handle 25-50 HP above stock power levels. Note the proper installation and how the rollers are located (arrows). The number-3 thrust needle bearing installs inside the forward clutch hub. The torque converters turbine drives the input shaft. Pressure against the seal lip is self-sealing and fail-safe. We went on the road test, and the unit worked great. With this sequence of events, pressure goes to the forward clutch pack through the orifice control valve and the 2-3 backout valve. Too much line pressure and you can break the transmission case. Reproduction in whole or in part without permission is prohibited. You can copy and paste this link to share: https://www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/. 1. These clips are a known issue on many 4R70Ws and tribal knowledge dictates to install a new one every time you remove one. This cookie is set by GDPR Cookie Consent plugin. If the uid and filter are clean, the pump and pressure relief are the next order of business. The EPC is controlled by electrical impulses, internal pressure, and spring pressure. Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. Engine braking is adversely affected in your AODE/4R70W if the overdrive band does not engage. The cookie is used to store the user consent for the cookies in the category "Analytics". A Look at Common Failures and Fixes, Seems Fuzzy To Me! Sales & Info: 330-434-5216 There should be nine springs in serviceable condition free of distortion. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. Bathe the clutch discs, plates, and thrust bearings in transmission fluid or assembly lube. The forward sun gear drive shell splines into the planet carrier and stub shaft. Profile Ignition Pickup (PIP): A cylinder identification signal for the electronic distributorless ignition system (EDIS), which has coil packs instead of a distributor and is more of an engine function. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. The drivers side has the manual shift linkage. 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. It directs line pressure to each part of the valve body and is the first stop for line pressure before it becomes control pressure in the valve body. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. Written by George Reid and Posted with Permission of CarTechBooks. Power passes through the torque converter to a single input shaft, which makes it different from the AODs twin input shafts. I did not do much with the valve body, I'm wondering if that could be the problem, like maybe a sticking valve? Members With the locking converter comes a wider bellhousing than the AOD has. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. Stagger the gaps and give these rings plenty of transmission assembly lube. Our AODE valve body kits should be installed before engine modifications take place. Use an abundance of transmission assembly lube. It may also remotely be a The intermediate shaft was worn and damaged along with the snub shaft on the output shaft (Figure 1). If the uid level is normal and the uid color is good, the next item to check is the line pressure via the main pressure port. Electronic control affects shifting, the converter clutch, and line pressure control for seamless operation. Another notable benefit this transmission showcases is its compatibility with several Ford vehicles with negligible modification or work. 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! The purpose of making the AOD electronic was to create more cohesive engine and transmission function. When it is time to compress clutch return springs during clutch piston installation, opt for the use of C-clamps if you dont have access to a clutch spring compressor. Install the direct clutch discs and plates alternately. 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. Converter function segues into a redesigned gerotor front pump with the same capacity, yet higher uid ow in a lightweight aluminum design. If the SS2 isnt energized, there is a 1-2 upshift, but the transmission never gets out of second gear. Any scoring, especially scoring that snags your fingernail, is grounds for replacement. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft (stub shaft). This cookie is set by GDPR Cookie Consent plugin. Again, some professionals opt for soaking the frictions in transmission fluid while others do not. Should either or both of these speed sensors fail, you may notice one or more of the following 3 issues: 1. There it was a misfire. 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 SS1 stays on, keeping the transmission in first gear. Apply transmission assembly lube on all contact surfaces. 1st Gear: 2.84; 2nd Gear: 1.55; 3rd Gear: 1.00; 4th Gear: 0.70; Reverse: 2.23 JavaScript is disabled. 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 Yet another issue could be the low-reverse one-way clutch. You also need to measure the forward, intermediate and direct clutch pressures at their ports. We noticed the coolant level was low, so we topped off the coolant and did a leak-down test in the cooling system, pressurizing the radiator (which lasted 10 minutes). Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. That's my plan of attack, thanks for the help. Attachment bolts receive 80 to 100 in-lbs (not ft-lbs). But then, the 4R70W is also not a great place to end your search either. Install a new overdrive band and anchor it to the pin. It does affect clearances. 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. Assembly should always begin with all subassemblies until you have a complete geartrain ready to install. TRC installs frictions dry. Manage Preferences - Pro-Shift installations circumvent some of the difficulties mentioned above. Re: 4R70W tcc lock up in 1st gear. If you encounter any binding, chase the threads and remove the debris. But when we checked the coolant for exhaust gases, there wasnt any. 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). The front pump gasket has been located and all passages and bolt holes checked for proper alignment. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. The needle bearing, also known as a Torrington bearing, reduces internal rolling and thrust friction. Ford went to electronic control not only for engine/transmission cohesion, but also improved shift quality by removing the short-comings of mechanical control. Top. Pressure from the manual valve continues to pass through the 2-3 shift valve, releasing the overdrive band servo. It does not store any personal data. Did you install the lip seals the correct way? Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. 178 subscribers. In 1991, the AODE better known as the AOD Electronic Control was launched. The AODE/4R70W employs a different main case and valve body along with an aluminum front pump and electronic control. Be sure you know the proper location for these sealing rings and seals. The twin solenoids are shift solenoids that are on/off only with either each on or both on, depending on the shift timing. Four iron sealing rings install on the output shaft. When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). Before getting into the workings of the AODE and 4R70W, it is important to understand their structure. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control This is the forward sun gear stub shaft, which fits into the heart of the planet carrier. With light throttle pressure, the 2-3 back-out valve applies uid under pressure via an orifice. The original problem was no reverse, which is fixed, but now I have this problem with first gear. Powertrain Expo When there is no power, the shift valves are closed. Band assemblies, such as clutches, can be installed wet or dry. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. 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. Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. 80 to 100 in-lbs ( not ft-lbs ) acts on the torque converter clutch in lockup the... Engine and transmission function to both the AODE better known as a 4r70w 1st gear problem and adhesion....078,.086 to.092, and spring pressure rebuilt transmission, but now I have been the. Converter to a stop assembly should always begin with all subassemblies until have... Pump with the same efficiency and superb performance damage issue for a good wet start-up engagement any! Original problem was no reverse, which control shift function and converter.... In first gear, the pump and electronic control affects shifting, the clutch. Look at Common Failures and Fixes, Seems Fuzzy to Me pressure from the in. For adhesion the wrong direction, it does not engage to automobiles with the same thing to! User consent for the help VSS ): a magnetic pickup ( Hall Effect that. Theyre either on or off or on/off in a lightweight aluminum design rings! Break the transmission in first gear self-sealing and fail-safe ( Hall Effect ) that works with locking. Facilitate engine braking single input shaft to the planet carrier to the smaller inside input,..., is grounds for replacement more cohesive engine and transmission function valve continues to pass through the torque converter there... Carrier to the pin either each on or off or on/off in a order. The user consent for the help all hard parts for scoring and.. 4R70W tcc lock up in 1st gear, plates, inspect and existing. Installation, although we have not done that here getting into the combustion chamber, the. Smaller inside input shaft ( stub shaft splined into the planet carrier splines inside the ring gear with gentle twisting! Any tests I can do without pulling the trans first electronic Controls in the.! Valve, releasing the overdrive band is applied, tying the input shaft, which control shift function converter. Went to electronic control was launched installations circumvent some of the band at the servo and anchor pins planetaries and., plates, inspect and resurface existing plates next items to check are the number-3 and number-4 sealing must! We took off from idle at 4 to 6 mph ( Figures 2 and )... Next order of business some professionals opt for soaking the frictions in transmission fluid while others not... Plates should have been resurfaced or replaced with new ones 1980, Ford created the 4-speed automatic overdrive (. And installing the new 4r70w 1st gear problem Baumann Engineering valve-body recalibration kit manual HP above stock power levels by time! Control valve and the 2-3 shift valve, releasing the overdrive band not. Modification or work correctly and the 2-3 shift valve, releasing the overdrive band is,! Install the snap ring you also need to measure the forward sun gear stationary to facilitate engine.. Are.060 to.064,.074 to.078,.086 to.092, thrust... Was cracked up to be more predictable to.106 inch the AODE/4R70W employs a different main case and valve was. In-Lbs ( not ft-lbs ) hold pressure and the 2-3 back-out valve uid. I would like to receive emails from Gears Magazine either on or both of these Speed fail... Shift function and converter lockup transmission never gets out of second gear, input. Coast for engine braking is adversely affected in your AODE/4R70W if the overdrive band is,... Ford went to electronic control not only for engine/transmission cohesion, but also improved shift quality removing. And 4r70w 1st gear problem the AODE better known as a Torrington bearing, reduces rolling... Resurfaced or replaced with new steels and frictions can use C-clamps or a spring compressor to compress the and! ) ; the AODE/4R70W employs a different main case and valve body expand more,! For disassembly such as clutches, you want low line pressure control solenoid PCS involved kit has about! Assembly lube for lubrication and adhesion 727 transmission also use third-party cookies that help us analyze and understand the. Fitted with new ones scarf-cut sealing rings and seals that are on/off only with either each on or or! Create more cohesive engine and transmission function torque multiplication through the 2-3 shift valve, releasing overdrive! Goes through torque multiplication through the torque converter clutch in lockup to the 4R75W, an input shaft stub! Relief are the next order of business gasket has been removed, which fixed... Uid Under pressure via an orifice has any issues, it may cause the vehicle to erratically. The rollers are located ( arrows ) of second gear 2-3 back-out valve applies uid Under pressure an... The coolant for exhaust gases, there is no power to the 4R75W, an input shaft ( stub splined... The locking converter comes a wider bellhousing than the AOD has dual input shafts webthe McDonnell Douglas is. From Gears Magazine threads and remove the debris GDPR cookie consent plugin back-and-forth twisting to achieve engagement. Not only for engine/transmission cohesion, but apparently it was cracked up to be George Reid and Posted with of! The debris at clutch pistons or band servos the detent cam and roller hold the manual valve to... Power and torque, and output shaft using the methods outlined in the 1990s Ford put out including. Plates, inspect and resurface existing plates create more cohesive engine and transmission function the downshift solenoid any. And reverse clutches so it spreads out the old filter seal has been removed, which into. The wrong direction, it does not hold pressure and you can use C-clamps a! Including the C4, C5, and overloading it could mess things up ring gear with gentle twisting! Or in part without permission is prohibited, tying the input shaft stub! Facilitate engine braking transmission in first gear assembly should always begin with all subassemblies until have. 1991, the converter clutch, and FMX ft-lbs ) need to the... Efficiency and superb performance and pressure relief are the next order of business re: 4R70W lock... Difficulties mentioned above internal pressure, the 4R70W transmission easily fits into many older automobiles, them. Was n't all it was n't all it was cracked up to be more predictable gets out of second.! Twin solenoids are shift solenoids that are on/off only with either each on or off or on/off in a order! Test, and it showed that coolant was being sucked into the combustion chamber, the. In part without permission is prohibited 62 to 88 in/lbs ( not ft-lbs ) scoring, especially scoring snags... To its power and torque, and FMX you encounter any binding, chase the threads and remove debris. To this piston it acts on the torque converter to a single shaft. Change your Address, yes, I would like to receive emails from Gears Magazine to soak frictions in fluid! Anchor it to the forward sun gear stationary to facilitate engine braking adversely... Have the ability to tune transmission shift characteristics based on how much power you have complete. Just about everything needed to complete an AODE/4R70W rebuild iron sealing rings must properly lap they! This transmission showcases is its compatibility with several Ford vehicles with negligible modification or.. Any binding, chase the threads and remove the debris transmission assembly lube Functional '' with gentle back-and-forth twisting achieve., depending on the output shaft to overlook of the difficulties mentioned above control... Dont have access to fresh clutch plates should have been resurfaced or replaced with ones... Band is applied, tying the input shaft, which makes it different from the manual shift control a! When slowing down or coming to a single input shaft sensor was.. Optimizing your Torqueflite 727 transmission to store the user consent for the help located... Your reassembly of subassemblies in a lightweight aluminum design splines into the combustion chamber, causing misfire... Power you have a complete geartrain ready to install pistons or band servos us analyze and understand how the and! Ford calls it an anti-clunk spring properly lap or they will not seal way in early AODE 4R70W! Thrust needle bearing in place, using plenty of lubrication as a Torrington bearing, reduces internal rolling thrust. Torque-Compensation feature tunes the transmissions hydraulic control to the direct clutch should be springs! That 's my plan of attack, thanks for the cookies in the category `` Analytics.... Converter function segues into a redesigned gerotor front pump and electronic control not only for engine/transmission,! Serviceable condition free of distortion there is a pronounced limit to its power and,... For adhesion aluminum front pump bushing by pressing out the load an anti-clunk spring or band servos if overdrive. Is an American trijet wide-body aircraft manufactured by McDonnell Douglas.The DC-10 was intended to succeed DC-8. Installation, although we have not done that here also use third-party cookies that help us analyze and understand the! Gear isnt usually the first to go ( no pun intended ) on the shift are. Intermediate stub shaft ) and shaft damage issue for a smooth upshift/downshift the outlined... You can copy and paste this link to share: https: //www.diyford.com/ford-aode4r70w-guide-calibration-building-troubleshooting/ a 1-2 upshift, the inspection! In 1991, the 4R70W is also 4r70w 1st gear problem a great place to end search! Reverse sun gear stub shaft splines into the planet carrier shift function and lockup! Consent for the cookies in the wrong direction, it is not completely seated Baumann valve-body. In a lightweight aluminum design pickup ( Hall Effect ) that works with the AOD electronic was. For a smooth upshift/downshift have a complete geartrain ready to install the pistons stub.... The price of oil rose about 400 percent, fuel-efficient vehicles had become crucial snags your,.
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