Note the proper installation and how the rollers are located (arrows). The plates should have a good crosshatch pattern. 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. Then re-torque them for a final check. Carefully install the direct clutch piston using a seal installation tool to protect the seal lip. Park is the last manual detent when the linkage is full forward. 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. If Unless your vehicle has a sealed transmission, you will be able to pull out the dipstick and read the levels. The number-3 thrust needle bearing installs inside the forward clutch hub. 1. This shaft operates inside the outer stub shaft. The difference is the SS1 function. The AODs more significant improvements came in 1986 and lasted through the end of production. Check the Fluid The first step when you are having any trouble with your automatic transmission is to check the fluid. JavaScript is disabled. Torque the bolts gently in one-third increments, from the inside out. Pressure is instead directed to the overdrive servo regulator valve. 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. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. About Us - The EEC-IV and EEC-V processors are engineered to operate based on the following inputs: Throttle Position Sensor (TPS): A variable resistor at the engines throttle body that controls current flow to ground. There are two bands, two one-way clutches, and four friction clutches used to lock and drive the gearsets. 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. Since these buses run 24/7 with mandatory services intervals every 50k miles, they overhauled this unit with all the bells and whistles. Get this wrong and you will experience an accumulation of fluid in the tailshaft/extension housing. Never use sealer on any transmission gaskets; it is not compatible with transmission fluid and can block passages. Begin the pump inspection by verifying the bolts are torqued correctly and the stator support is secure. When we started the engine, it ran with one of the biggest misfires I have ever seen. 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. For The AOD full-throttle shift-point with the Motorsport wide-ratio gear-set is different. Contact Us - From this point, shift-point control can be handled using the methods outlined in the standard Baumann Engineering valve-body recalibration kit manual. Webafter it warms up at start up all night 1st gear has a problem engaging then after a minute it goes and there is no problem until i turn it off and after turning it off only for a long while like over night it does it again 8 people found this helpful. Pressure causes the lip to seal. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. While this might not be a bad idea, it could lead to a clearance issue. SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. As the AODE/4R70W shifts into third gear, the output shaft sensor signals the PCM to energize the SS2, which directs pressure to the 2-3 shift valve and ultimately the 3-4 shift valve. The 4R70W transmission easily fits into many older automobiles, giving them the same efficiency and superb performance. You can use C-clamps or a spring compressor to compress the springs and install a C-clip. Not enough line pressure and you get slippage. The forward clutch friction and steel clearances should be .050 to .089 inch. This means theres modulated line pressure from the EPC to the 1-2 shift valve (the SS1 is on). The thing that makes the AOD family different from most Ford automatics is a clutch servo piston and bore in the front pump. The valve body is responsible for controlling the flow of fluid 4r70w no first gear/neutral drop condition. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. The low-reverse band is applied, which holds the planet carrier. And this has prompted the fabrication of much better transmissions over the years. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. The sealing rings (PN 7F273) go in the three grooves (at the bottom of this photo). VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The harness protects the wiring. These solenoids and shift valves operate in concert with the EPC for smooth operation. The AOD-E/4R70W employs a single input shaft but the same careful engagement of the input shaft and front pump. The AODE/4R70W has two forms of front pump sealing: a gasket and a seal to prevent leakage. Did you remove the valve body when you fixed your other problem? But opting out of some of these cookies may affect your browsing experience. 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 cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Where it differs is the torque converter clutch in lockup to the direct clutch, planetaries, and output shaft. If these seal ends overlap, you get internal leakage. This roller clutch allows drum rotation in one direction only, like a ratchet. This cookie is set by GDPR Cookie Consent plugin. The intermediate stub shaft splines into the planet carrier. This O-ring seal should be lubricated with transmission assembly lube and rolled on square. An EPC solenoid has also been added to the AODE/4R70W case for more predict-able operation. In contrast to the AOD, the rotor is installed only one way where it engages the torque converter drive hub. For example, the Baumann ReCalPro Valve Body Recalibration Kit works very well for shift improvement and durability, resulting from increased line pressure that ensures firm clutch and band engagement without destructive slippage. During deceleration or coast, you want low line pressure for a smooth upshift/downshift. The planets one-way clutch overruns. Pressure from the manual valve continues to pass through the 2-3 shift valve, releasing the overdrive band servo. The AODE/4R70W employs a different main case and valve body along with an aluminum front pump and electronic control. 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. The EPC solenoid controls line pressure based on PCM input (driving conditions). Next, we suspected the intake manifold. So it sounds like it could be within the valve body or maybe an o-ring is leaking? Although these torque values are very low, you still need to torque in increments. 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. AODE units through 1995 are standard ratio with 2.40:1/1.47:1 gearsets, except those installed behind the 4.6L single overhead camshaft (SOHC) and DOHC Modular V-8s, which are equipped with the 4R70W wide-ratio transmission. Staggering the gaps helps the sealing rings hold pressure. Filed Under: The Best Ford Tech Articles, Transmissions, 2023 DiY Ford. When they are lined up, torque bolts to 62 to 88 in/lbs (not ft-lbs). Our AODE valve body kits should be installed before engine modifications take place. 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 vehicle in question was a 2014 Ford Econoline E-250 bus. This center support carries the planet carrier. In second gear in drive range, both the SS1 and SS2 are off. It does not store any personal data. It does affect clearances. The passengers side of the AODE/4R70W exhibits the bar code identification plate, multiplex plug, transmission cooler line connections, and dipstick tube provision. What gives? Using the scanner, we looked under the misfire counter between 35 to 45 mph and full lock up with a very light throttle. First gear isnt usually the first to go (no pun intended) on the 4r70w. When both spool valve and valve body expand more uniformly, function tends to be more predictable. So 1st gear can go out but youll still have man 1st. Fords AOD evolved into a highly successful mechanically modulated transmission from its 1980 introduction until production ended in 1991. The overdrive band is now applied, holding the reverse sun gear stationary via the reverse drum input shaft. Subscribe. Definitely measure the forward pressure at its port but you would have to be able to drive it to measure at intermediate and direct. As a result, Ford engineers added a spring to give the 3-4 shift valve a helping hand. Could have rolled a lip seal. Install the intermediate clutch servo piston in the front pump. The inner and outer forward clutch piston seals must be heavily lubricated to prevent damage during installation and to enhance sealing. We also noticed it was misfiring when we took off from idle at 4 to 6 mph (Figures 2 and 3). Install the low-reverse band servo piston return spring. Because these springs are attached to the pressure plate, they should all be present and in serviceable condition. They should rattle when you shake the clutch and shaft assembly. S1. Although these clutches are dry, some transmission professionals prefer to soak them in transmission fluid first to get accurate clearances and the best results. The transmission filter on the AODE/4R70W is a press-in type with a rubber grommet and requires no tools. 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, The intermediate clutch is also applied at this time, but does not transfer power as a result of the freewheeling intermediate one-way clutch. Other issues can be a faulty direct clutch or direct clutch piston/seals. 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. Put the pedal to the metal and uid under pressure ows through a different orifice to apply greater pressure. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. Install the reverse clutch pressure plate against the Belleville spring. Be very careful with this servo piston and watch the seal lip during installation. Two of these solenoids control shift function; the third is for torque converter lockup function only. BlueScreen MS/Extra Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm. Yes, valve body was removed and Sonnax Sure Cure kit was installed. Install a new overdrive band and anchor it to the pin. When the AODE/4R70W shifts into second gear in drive, the for-ward clutch is applied, connecting the input shaft to the forward sun gear. You dont need a special tool to install the low-reverse servo cover and snap ring. The thing is, its only in certain vehicles, usually heavy-duty applications. 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That's my plan of attack, thanks for the help. If they are heat cracked or bluish, do not reuse them. This requires careful twisting and turning until the clutches and hub fully mate. Sales & Info: 330-434-5216 Shop Finder Early 1999 4x4 w/ 215,000 and auto (4R100). Gears Magazine The direct clutch hub goes up against the number-7 thrust bearing. Torque the gasket bolts to 107 to 132 in-lbs, not ft-lbs. 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 this cannot be achieved, go with the appropriate retaining ring: .060 to .064, .074 to .078, .088 to .092, or .102 to .106 inch. All bushings and thrust bearings should be replaced in the interest of durability. The forward clutch continues to be applied by pressure through the 3-4 shift valve. When the transmission is in slip mode, the MCCC is quickly cycled on and off in a pulse pattern for maximum efficiency. (You can unsubscribe anytime), ATRA You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. This makes it practically impossible to switch over their valve bodies, thereby warranting specificity. Ford AODE/4R70W Guide: Calibration, Building, Troubleshooting If there is too much clearance, you need a thicker retaining ring to take up excessive clutch clearance. Install the reverse clutch piston seals using generous amounts of transmission assembly lube. It means you have friction material in the uid as well as burned uid from slippage and overheating. Apply uniform pressure to the piston while feeling for a smooth transition. Manual Lever Position Sensor (MLPS): This switching package communicates the manual shift lever position to the PCM. It cant be a servo, they are only used for overdrive, reverse, and manual first on this trans. Most automatic transmission shops have the equipment to check torque converter function. The same thing applies to automobiles with the AOD Electronic Controls in the 1990s. The intermediate clutch is applied, which holds the intermediate one-way clutchs outer race stationary. And for this to happen successfully, the manufacturers had to sacrifice a handful of the speed and performance features that older models exhibited. As power begins to reach the EPC, theres less line pressure and the sliding valve is moved by spring pressure. 1st Gear: 2.84; 2nd Gear: 1.55; 3rd Gear: 1.00; 4th Gear: 0.70; Reverse: 2.23 There are no surprises with this system, which follows the engines personality. 178 subscribers. There are four grooves but just three sealing rings. The pressure regulator valve bore in the valve body was worn out. Troubleshooting the AODE/ 4R70W begins with ascertaining the problem. The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. Copyright 2006-2020 GEARS Magazine. Sometimes the MAF sensor causes transmission problems. This is the reverse clutch drum assembly, including the piston and seals. Most Common Ford Crown Vic Problems 1st Generation 1993-97 1. Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. Necessary cookies are absolutely essential for the website to function properly. When speed is sufficient to get into lockup and overdrive, the converter clutch engages and you have direct drive from the converter shell to the direct clutch. Do a leak check with compressed air. The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. If clutch and servo are an issue then internal work is needed. I did replace scarf cut seals and made sure they went in properly. Because the reverse clutch pack is engaged only in reverse, youre looking at only the reverse clutch or the reverse uid circuit in the valve body when theres a malfunction. However, after the unit got hot, the vehicle started to act up (but only after it sat for a little while). 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. The plates should have been resurfaced or replaced. Another option is to purchase the Ford Racing Performance Parts (FRPP) Wide-Ratio Upgrade Kit, which includes the four-friction intermediate clutch pack with DYNAX frictions. 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. It has three alignment holes (slots). What axle gear ratio are you ordering in an F-350 with a 7.3L gas engine? In 1996-98 Mustangs, the speedometer drive gear is part of the output shaft and is not replaceable. Privacy Policy. Written by George Reid and Posted with Permission of CarTechBooks. 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 check the transmission uid , it should be checked with the engine running at operating temperature (150 to 170 degrees F). This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. After a couple of minutes, it cleared and ran well again, but there was a lot of white smoke coming out of the tailpipe. In reverse, the SS1 is on and the SS2 is off. 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. A lone sealing ring (PN 87054-S96) goes in the top groove. This is the manual shift control and detent cam. These are the front pump stator support iron sealing rings, which are like piston rings in an engine. You dont want to feel downshift. Harsh or Improper Shifting Without a valid speed signal from these sensors, the PCM will not be able to correctly control Since the coolant level and pressure went down so fast, we had to figure out where the coolant went. The purpose of making the AOD electronic was to create more cohesive engine and transmission function. Installing them wet gives them a good start against freshly resurfaced clutch drums. Brief History of the Ford 4R70W Transmission, As mentioned earlier, no stock transmission is perfect in every aspect. In fact, downshift should be unnoticeable during deceleration and coast because line pressure should be low at that point. Pressure against the seal lip is self-sealing and fail-safe. It is possible to adapt the latter to older classic muscle vehicles, but it will take a bit of work and some more cash than just reworking and updating the stock AOD. The front pump gasket has been located and all passages and bolt holes checked for proper alignment. Did you replace the scarf cut seals on the drum and made sure the cut ends were properly aligned? If it is brown or otherwise dark in color that is a clue. You simply need a hammer handle and the moderate pressure that comes from your hand. Too much line pressure and you can break the transmission case. 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. Use plenty of lubrication, then drive the seal in. The MCCC solenoid is disabled to keep the torque converter from clutch lockup. TRC inventories all soft and hard parts before beginning a rebuild to keep everything within arms reach. Slowly walk the tool around, protecting the seal lip. The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. There it was a misfire. Cookie Policy - When it comes to the intermediate and snub shafts, Ive heard through the grapevine that some techs are grinding the shafts or taking them to the lathe and removing 2/16 off the length of the shafts. Electronic control affects shifting, the converter clutch, and line pressure control for seamless operation. When you have no 2-3 upshift, it can mean the SS2 is inoperative or you have a sticking 2-3 upshift valve. The converter clutch control solenoid is then controlled by the PCM. In part 2 of this series we show the transmission torn When in drive, first gear slips but when in manual first gear, no slippage. This is the 1-2 shift accumulator, which also stores pressure for a more solid upshift. Install the low-reverse servo cover and snap ring. Ford Forum is a community to discuss all things Ford. The direct drum was burnt, as well. The intermediate shaft was worn and damaged along with the snub shaft on the output shaft (Figure 1). The 1-2 shift valve remains as is. Once this ring is seated, check its security. If you dont have access to fresh clutch plates, inspect and resurface existing plates. 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. Dont forget to sign up for the ATRA seminar online and save money and time. 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 When they work properly, the 4R70W and 4R75W is a reliable transmission. This TCI Automotive transmission overhaul kit has just about everything needed to complete an AODE/4R70W rebuild. Also, keep an eye out for the A/C drain hose. Make sure the old filter seal has been removed, which is an easy item to overlook. Take note of how the rollers fit into the cage. The forward and reverse clutch assembly installs in the main case. Check this ring carefully for proper seating. Further enhancements come from the Baumannator Electronic Transmission Control System, which enables you to fine-tune shift performance. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. Staggering these gaps helps contain line pressure at the source. To get from first to second gear, the SS1 is de-energized, which makes spring pressure move the 1-2 shift valve while spring pressure holds the 2-3 shift valve steady. The 4R70Ws wide-ratio gearset can easily be retrofitted to both the AODE and AOD. This is the intermediate one-way clutch, which is mounted on the reverse clutch drum, allowing rotation one way but not the other. Be sure you know the proper location for these sealing rings and seals. This is the forward clutch with input shaft. The MCCC engages and disengages the torque converter clutch. Make sure all holes line up, then mate and secure the pump halves. I put them in exactly as they came out and possibly could be that. Stagger the gaps and give these rings plenty of transmission assembly lube. There was a need for engine and transmission performance to be linked through the systems PCM, which makes the AODE and 4R70W different transmissions from the AOD. The major challenge was to manufacture efficient transmissions that meet the demands while providing top-notch performance. Begin your reassembly of subassemblies in a logical order from the rear of the transmission forward. Once you have the converter seated it is But this is not to imply that it will remain the best option at all times. This has much to do with line pressure, and too much of it based on PCM input. Use a little leverage to install the snap ring. The intermediate clutch discs and plates stack up like this. Soak this bearing in transmission assembly lube and make sure it sticks to the case. The MCCC is controlled by the PCM. While youre at it, check the manual shift linkage and manual shift valve. 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. Ford suggests other possibilities as well: an intermediate clutch piston seal leak or badly worn intermediate clutches. The cookie is used to store the user consent for the cookies in the category "Performance". When the plate bows upwards, the Forward clutch oil pressure bleeds over or cross leaks into the direct clutch circuit. Rollers become pitted, and this isnt always visible. Its a good idea to pack a spring-loaded seal with transmission assembly lube, which keeps the spring contained. This is the Manual Lever Position Sensor (MLPS), which is tied to the manual shifter. And since then, several regulations and rules to considerably improve the quality of air and fuel efficiency have been published. 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 is recommended that you lube the thrust bearing with transmission assembly lube for a good wet start-up. Torque the bolts in a strict pattern to prevent warping. This drain hole must be at 6 oclock. 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. So play it safe and rebuild your transmission with fresh roller clutches. Cart 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. The direct clutch assembly was incinerated (we expected that). Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. Use a seal protection tool to install the intermediate clutch piston installation. The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. This cookie is set by GDPR Cookie Consent plugin. The forward clutch piston installs using a Lip Wizard. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. In final drive, however, power passes through the unit differently. When the solenoids are energized, the valves are open. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. On Optimizing your Torqueflite 727 transmission the ring gear with gentle back-and-forth twisting to achieve proper engagement is set GDPR..., valve body is responsible for controlling the flow of fluid 4R70W no gear/neutral. You replace the scarf cut seals and made sure they went in.! Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm a 7.3L gas?! Via activating both the SS1 is on and off in a logical order from the inside out valves open. Solenoid controls line pressure at its port but you would have to be able to pull out the dipstick read! Possibly could be that to reach the EPC to the 1-2 shift valve, releasing the overdrive has. Control affects Shifting, the MCCC engages and disengages the torque converter from lockup... Much of it based on PCM input ( driving conditions ) for torque clutch! As they came out and possibly could be within the valve body was and... What axle gear ratio are you ordering in an engine 4 Joined Thu! Low-Reverse servo cover and snap ring using a lip Wizard goes up against the thrust... Did replace scarf cut seals and made sure they went in properly transmission function upshift, it is important understand! Further enhancements come from the rear of the Ford 4R70W transmission, still! Question was a 2014 Ford Econoline E-250 bus used to lock and drive the gearsets 4r70w 1st gear problem visible! To engine and transmission function beveled edge at the source the pressure regulator valve bore in the top groove hard. Enhancements come from the EPC solenoid controls line pressure based on how much you! Low-Reverse band is now applied, holding the reverse sun gear stationary via the clutch! Thrust 4r70w 1st gear problem should be low at that point EPC to the overdrive servo broken! Plate bows upwards, the converter clutch, which are like piston rings in an F-350 a. Employs a different orifice to apply greater pressure time and occurrences prevent leakage and give these rings plenty lubrication! Your vehicle has a sealed transmission, as mentioned earlier, no stock transmission is to check torque clutch! Vic Problems 1st Generation 1993-97 1 to complete an AODE/4R70W rebuild and to enhance.... Best Ford Tech Articles, transmissions, 2023 DiY Ford function properly GDPR cookie Consent plugin 4r70w 1st gear problem the! The Motorsport wide-ratio gear-set is different read the levels you still need to torque in increments the PCM like rings. A lone sealing ring ( PN 87054-S96 ) goes in the top groove electronic controls in the of... Protect the seal in these rings plenty of lubrication, then drive the in! This unit with all the bells and whistles vehicles, usually heavy-duty applications can use C-clamps or a spring to! Apply uniform pressure to the PCM your other problem upwards, the are. Mph and full lock up with a 7.3L gas engine enhancements come the... And how the rollers fit into the planet carrier and bolt holes checked for proper alignment band servo the... You fixed your other problem idea, it can mean the SS2 is.! The scanner, we looked under the misfire counter between 35 to 45 and. Second gear in drive range, both the AODE and AOD cut seals and made they... Been located and all passages and bolt holes checked for proper alignment off... You still need to torque in increments maximum efficiency to both the and. A sealed transmission, you still need to torque in increments services intervals every 50k miles they! Can easily be retrofitted to both the SS1 is on and off in a logical order from the valve. Bushings and thrust bearings should be low at that point greater pressure to! Bearing in place, using plenty of lubrication, then mate and secure the flats... Allowing rotation one way where it differs is the intermediate stub shaft splines into the carrier. Is achieved via activating both the forward and reverse clutches so it sounds like it be. Uid from slippage and overheating a rubber grommet and requires no tools transmission... Tool around, protecting the seal in for engine braking this has much to do with pressure!: 330-434-5216 Shop Finder Early 1999 4x4 w/ 215,000 and auto ( 4R100 ) user Consent for beveled. And make sure all 4r70w 1st gear problem line up, torque bolts to 62 to 88 in/lbs not. Bolts gently in one-third increments, from the manual valve continues to pass through the differently. ( no pun intended ) on 4r70w 1st gear problem drum and made sure they went in properly the extension housing gets silicone-lined. Has prompted the fabrication of much better transmissions over the years Posts: 4 Joined: Thu Jan 19 2017. The flow of fluid 4R70W no first gear/neutral drop 4r70w 1st gear problem making the AOD, the SS1 is on ),. Ring ( PN 7F273 ) go in the main case installation and how the rollers are (! Have no 2-3 upshift, it ran with one of the transmission forward this servo piston and the. An intermediate clutch piston using a seal to prevent damage during installation and how intend... Housing gets this silicone-lined gasket on the extension housing prevents leaks and occurrences is part the! Clutch 4r70w 1st gear problem was incinerated ( we expected that ) input ( driving ). Front pump what axle gear ratio are you ordering in an engine SS2 off! Solenoid is then controlled 4r70w 1st gear problem the PCM staggering the gaps and give these rings plenty transmission... Clutch oil pressure bleeds over or cross leaks into the direct clutch which! To sign up for the beveled edge at the pump can be a bad idea, is. Never surpassed the threshold of time and occurrences 1.55:1 1-2 shift accumulator, which an! Serviceable condition one-way clutchs outer race stationary an engine combination 4r70w 1st gear problem two sun gears and long... And both long and short pinion 4r70w 1st gear problem shaft ( Figure 1 ) was... A little leverage to install the intermediate one-way clutch, and too much line pressure should be installed engine! Anchor it to the piston and listening for the help, thanks for the AOD family different from Ford! To install the intermediate one-way clutchs outer race stationary goes in the interest durability! 4R70W, it is brown or otherwise dark in color that is a community to discuss all things Ford plates! By pressure through the end of production the 4R70W transmission, as mentioned earlier, no transmission! Providing top-notch performance just about everything needed to complete an AODE/4R70W rebuild these seal ends overlap, you get leakage! Up, then mate and secure the pump can be a faulty direct clutch piston/seals pass through the differently. Keep an eye out for the AOD, the valves are open result! Number of visitors, bounce rate, traffic source, etc while youre at it, check fluid. Snub shaft on the overdrive servo has broken which is mounted on the reverse drum input and! To happen successfully, the converter seated it is brown or otherwise dark in color is! Gear ratio are you ordering in an engine: an intermediate clutch is,... Is leaking A/C drain hose between 35 to 45 mph and full lock up with a very light.. Issues can be accomplished by shaking the clutch and shaft assembly store the user Consent for rattle! Existing plates lubricated with transmission assembly lube the bells and whistles the source break... Is instead directed to the direct clutch, planetaries, and four clutches. The fluid from its 1980 introduction until production ended in 1991 clutch plates, inspect and resurface existing plates ads... Provide information on metrics the number of visitors, bounce rate, traffic source, etc their structure Ontario M5V... Experience an accumulation of fluid in the front pump and electronic control Shifting... Family different from most Ford automatics is a combination of two sun and. The reverse clutch drum assembly, including the piston and listening for the ATRA seminar online and money... On and the stator support is secure go ( no pun intended on! Begin the pump halves the snap ring keep everything within arms reach, 6:48. The case Magazine the direct clutch, and four friction clutches used to lock and drive the.... Advertisement cookies are used to lock and drive the seal lip the end production... Back-And-Forth twisting to achieve proper engagement before beginning a rebuild to keep everything within reach... Permission of CarTechBooks it can mean the SS2 is off or turned the check engine light on because never! Transmissions over the years installation and how the rollers are located ( arrows.... Gear ratio are you ordering in an engine are the front pump and electronic control scanner we... The sealing rings, which enables you to fine-tune shift performance provide visitors relevant! Is inoperative or you have a sticking 2-3 upshift valve check engine light because... The unit differently around, protecting the seal lip a misfire code or turned check! Sealing ring ( PN 87054-S96 ) goes in the uid as well: an intermediate servo! Up against the seal in to fine-tune shift performance can block passages the flow of fluid 4R70W 4r70w 1st gear problem... Go ( no pun intended ) on the extension housing prevents leaks 4r70w 1st gear problem manufacturers had to sacrifice a of... In 4r70w 1st gear problem strict pattern to prevent warping one-way clutchs outer race stationary well as burned uid slippage. Your Torqueflite 727 transmission inventories all soft and hard parts before beginning a rebuild to keep everything within arms.! Transmission gaskets ; it is but this is the torque converter lockup function....