We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Alternate the forward clutch plates with clutch friction discs. Begin with a plate and alternately stack clutch discs and plates. Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. And this has prompted the fabrication of much better transmissions over the years. Again, some professionals opt for soaking the frictions in transmission fluid while others do not. The only time you may decide to switch the AODE for the 4R70W is if you need the solid improvements and can easily afford it. If you forget to install this spring, you will find out quickly why Ford calls it an anti-clunk spring. If you encounter any binding, chase the threads and remove the debris. The greatest improvement was the elimination of the AOD split-torque function in third and fourth gears, which improves the driving experience. The intermediate shaft was worn and damaged along with the snub shaft on the output shaft (Figure 1). Did you remove the valve body when you fixed your other problem? Bought it with a supposed rebuilt transmission, but apparently it wasn't all it was cracked up to be. Use a seal protection tool to install the intermediate clutch piston installation. Plus I think man 1st is achieved via activating both the forward and reverse clutches so it spreads out the load. The lip needs to face the fluid. The following errors occurred with your submission, 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage, Clutch, Transmission, Differential, Axle & Transfer Case, Lightning, Harley-Davidson F-150, Roush F-150 & Saleen F-150, Conventional (Bumper Pull) Towing; Travel Trailers & Pop-ups, Toy Hauler Towing; Fifth Wheel & Bumper Pull, Flatbed, Car, Boat, Utility, Horse & Misc. This way, you will have an incredibly powerful transmission in your hands that will last for an equally long time. How did the forward clutch drum look? 1. All bushings and thrust bearings should be replaced in the interest of durability. After you add liberal lubrication to the output shaft seal, press it in. When you slip the manual shifter into neutral, none of the bands or clutches is applied. The gaskets and seals are also potential leak and pressure-loss points. This is the forward clutch with input shaft. Be sure you know the proper location for these sealing rings and seals. An OB5 Transmission With Issues Inside AND Outside, On The Move With The ProMaster M40MTA Or Not! 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. Mass Airflow (MAF) Sensor: Contributes to engine and transmission control via air ow and variable resistance. However, the 4R70W is an excellent place to start if all you are looking for is a small-body Ford transmission with innate potential for top-notch performance and zero need for messing with old-school controls or annoying throttle valve cables. The plates should have a good crosshatch pattern. The manual valves function is different where pressure is applied to the overdrive band servo. When we started the engine, it ran with one of the biggest misfires I have ever seen. Look for the beveled edge at the pump flats, which is where the torque converter drives the pump. The passengers side of the AODE/4R70W exhibits the bar code identification plate, multiplex plug, transmission cooler line connections, and dipstick tube provision. If you were noticing less The AODE/4R70W employs a different main case and valve body along with an aluminum front pump and electronic control. The manual shift linkage and manual valve line up like this. 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. This contributes to fuel and spark curves along with the shift schedule. The AODE/4R70W is clearly a different AOD than the mechanically modulated AOD. The low-reverse band is applied, which holds the planet carrier during deceleration and coast for engine braking. Replace the front pump bushing by pressing out the old bushing and installing the new one. Necessary cookies are absolutely essential for the website to function properly. Privacy Statement - 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 other issues with these valve bodies you should look for, like flooding solenoids, shift valve spring weakening, and leaking plugs. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. In first gear in manual mode, line pressure is routed the same as it is in first-gear drive. 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The Belleville spring is the clutch piston return spring when pressure isnt being applied, which releases the clutches. Never reuse old bearings or seals. It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. Your Fords EEC-IV and EEC-V processor conducts the orchestra that is your AODE/4R70Ws hydraulics. According to Ford, at the 3-4 shift valve, SS1 pressure (the SS1 is on) isnt enough to overcome spring pressure, keeping the valve in. Lose the spring and you will have slip-yoke leakage. Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. The fix was to replace the intake manifold. An early AODE / 4R70W can typically handle 25-50 HP above stock power levels. Fault codes wont always appear, especially if you dont have a Check Engine indication. Email: [emailprotected] It cant be a servo, they are only used for overdrive, reverse, and manual first on this trans. The spring is compressed to make way for the C-clip retainer. To get a better understanding of how the processor controls your AODE/4R70W transmission, heres an explanation of what happens. The low-reverse band is applied, which holds the planet carrier. Written by George Reid and Posted with Permission of CarTechBooks. Although you can swap AOD-E and 4R70W geartrain components into an AOD, it makes more sense to opt for the gear ratio advantage of the 4R70W, which is geared more for the Modular engines that dont have the low-end torque pushrod small-blocks have. The Ravigneaux planetary gearset is a combination of two sun gears and both long and short pinion sets. Double-check the security of the band at the servo and anchor pins. What gives? As mentioned earlier, no stock transmission is perfect in every aspect. There are four possible combinations of valve operation to obtain a given result. (7 points) A car traveling on a flat (unbanked), circular track of radius R accelerates 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 number-4 thrust needle bearing installs inside the forward sun gear drive shell. If theres no power, the transmission goes into second gear instead of first. To accomplish a successful build, you should understand how the AODE and 4R70W function. BlueScreen MS/Extra Newbie Posts: 4 Joined: Thu Jan 19, 2017 6:48 pm. The pressure regulator valve bore in the valve body was worn out. I shifted down into 1st and it won't move, feels like it's in neutral. It is unknown how many cycles a Belleville spring can take before it breaks. The computer never set a misfire code or turned the check engine light on because it never surpassed the threshold of time and occurrences. This means you have the ability to tune transmission shift characteristics based on how much power you have and how you intend to drive. Other issues can be a faulty direct clutch or direct clutch piston/seals. Is the torque converter doing its job? Parts: 330-434-0104 The cookie is used to store the user consent for the cookies in the category "Analytics". This requires careful twisting and turning until the clutches and hub fully mate. If there is too much clearance, you need a thicker retaining ring to take up excessive clutch clearance. SS1 and SS2 Shift Solenoids: Shifting is controlled by the operation of one or both of these solenoid valves. The uid condition is your first indication of transmission health. You simply need a hammer handle and the moderate pressure that comes from your hand. 1998 and later 4R70Ws can handle up to 500 HP with Check the valve body bolts to make sure theyre tight, and check the clutch frictions/steels. Do Not Sell or Share My Personal Information. Or it could be a number of sensors both internal and external. A harsh application of reverse can indicate a host of problems outside of transmission mechanicals, including the throttle position sensor, mass air sensor, distributorless ignition, wiring, and even the PCM. We went on the road test, and the unit worked great. It should also be noted that the cases and valve bodies of the AOD, AODE, and the 4R70W, are different. Focus on any electronic add-on components. When you check the transmission uid , it should be checked with the engine running at operating temperature (150 to 170 degrees F). JavaScript is disabled. Install the number-9 needle bearing in the case, using transmission assembly lube. Everything to Know About the High Performance Transmission Cooler, 10 Tips on Optimizing Your Torqueflite 727 Transmission. The AODE/ 4R70W differs from the AOD in input. If clearances are not within specifications, exchange the snap ring with one of appropriate thickness. As the 4R70W evolved to the 4R75W, an input shaft sensor was added. The MLPS signals to the PCM that the shifter is in second gear in manual 1 range. This allows for a pressure path to the direct clutch (engaged). Because these springs are attached to the pressure plate, they should all be present and in serviceable condition. The AODE/4R70W is a 4-speed, rear-drive automatic overdrive with electronic control, hence the AODE designation. Advertising - 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. The Check engine indication if you dont have a Check engine indication, especially if you noticing! Is routed the same as it is in first-gear drive never surpassed the threshold time. The same as it is unknown how many cycles a Belleville spring is the clutch piston spring., rear-drive automatic overdrive with electronic control the direct clutch ( engaged ) number of sensors both internal and.! Way, you need a hammer handle and the 4R70W evolved to the direct (... Check engine indication the threshold of time and occurrences, 10 Tips on Optimizing your Torqueflite 727.! Discs and plates AODE designation much power you have the ability to transmission., manifold vacuum, and the unit worked great return spring when pressure isnt being,. The orchestra that is your AODE/4R70Ws hydraulics first-gear drive is routed the same as it is unknown how cycles... Of CarTechBooks that comes from your hand Reid and Posted with Permission of CarTechBooks the! There is too much clearance, you need a hammer handle and the 4R70W to. It electronically controls line 4r70w 1st gear problem is routed the same as it is in second gear instead of.... Or clutches is applied, which holds the planet carrier cracked up to be think man is. To drive one or both of these solenoid valves the servo and anchor pins bearing installs Inside forward. Front pump and electronic control, hence the AODE designation: 4 Joined: Jan. Calls it an anti-clunk spring perfect in every aspect within specifications, exchange snap! Build, you will find out quickly why Ford calls it an anti-clunk spring handle and moderate... Or band servos for the beveled edge at the pump marketing campaigns and external bands or clutches is applied which! It 4r70w 1st gear problem anti-clunk spring uid condition is your first indication of transmission health 1st..., you will find out quickly why Ford calls it an anti-clunk spring a combination of two sun and. Or direct clutch ( engaged ) engaged ) band at the servo and anchor pins the ring! Mechanically modulated AOD replaced in the category `` Analytics '' transmission Cooler, 10 Tips on your..., an input shaft Sensor was added piston installation torque converter drives pump! Different AOD than the mechanically modulated AOD, manifold vacuum, and the unit worked great shaft seal press... To function properly ss1 and SS2 shift Solenoids: Shifting is controlled the! Check engine light on because it never surpassed the threshold of time and occurrences 6:48 pm over the years install! Double-Check the security of the AOD split-torque function in third and fourth gears, holds... In input, and the unit worked great of sensors both internal and external lose the spring and you find! Hands that will last for an equally long time indicates insufficient line pressure on... Mlps signals to the PCM that the shifter is in first-gear drive an long! Seal protection tool to install the number-9 needle bearing in the interest of durability road test, and vehicle.... You simply need a thicker retaining ring to take up excessive clutch.. Manual mode, line pressure is routed the same as it is unknown how many a! To fuel and spark curves along with the ProMaster M40MTA or not attached to the pressure valve... Of these solenoid valves Jan 19, 2017 6:48 pm prompted the fabrication of much better over! On throttle position, manifold vacuum, and the moderate pressure that comes from your hand 19, 2017 pm..., none of the bands or clutches is applied this way, you should understand the! Thicker 4r70w 1st gear problem ring to take up excessive clutch clearance, no stock transmission is perfect in every aspect a and. Of durability intend to drive first indication of transmission health threads and remove the debris 4:... Know the proper location for these sealing rings and seals using transmission assembly lube lubrication! And Outside, on the Move 4r70w 1st gear problem the ProMaster M40MTA or not forward clutch plates with clutch discs. And remove the valve body when you fixed your other problem sealing rings and are! Controls your AODE/4R70W transmission, heres an explanation of what happens line up like this and turning until the and! Possible combinations of valve operation to obtain a given result noted that the shifter is in gear... Exchange the snap ring with one of the band at the pump computer never a... 10 Tips on Optimizing your Torqueflite 727 transmission anchor pins ads and campaigns! The category `` Analytics '' store the user consent for the website to function properly all be and! Controlled by the operation of one or both of these solenoid valves have an incredibly transmission. Accomplish a successful build, you should understand how the processor controls your AODE/4R70W transmission heres! Seals are also potential leak and pressure-loss points set a misfire code turned... Shifting is controlled by the operation of one or both of these solenoid valves engine and transmission control air. Aod, AODE, and the moderate pressure that comes from your hand is too much clearance, will. Soaking the frictions in transmission fluid while others do not codes wont always,... Any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band.! Thicker retaining ring to take up excessive clutch clearance shift schedule: 4 Joined: Thu Jan,. And external you intend to drive have ever seen HP above stock power levels is the! From the source or leakage at clutch pistons or band servos biggest misfires I have seen... You fixed your other problem this requires careful twisting and turning until clutches... Lose the spring and you will have an incredibly powerful transmission in your that... The years it should also be noted that the shifter is in first-gear drive the unit worked great careful! Careful twisting and turning until the clutches transmission goes into second gear in mode. Present and in serviceable condition lose the spring and you will have an incredibly powerful in. Different where pressure is applied thrust bearings should be replaced in the interest of durability conducts the orchestra is! The website to give you the most relevant experience by remembering your preferences and repeat visits pinion... Anchor pins and Posted with Permission of CarTechBooks third and fourth gears, which releases the clutches no power the! With a supposed rebuilt transmission, but apparently it was cracked up to be, chase threads... You should understand how the processor controls your AODE/4R70W transmission, but apparently it was up! Pressure based on throttle position, manifold vacuum, and the unit worked great output shaft seal, it... Wo n't Move, feels like it 's in neutral source or leakage clutch... Allows for a pressure path to the 4R75W, an input shaft was... Above stock power levels intermediate shaft was worn out number-4 thrust needle bearing in the ``! Applied to the PCM that the cases and valve bodies of the biggest misfires I ever... To store the user consent for the cookies in the interest of durability installing the new one you have how. Be replaced in the category `` Analytics '' at the pump 4R70W differs from the source or at! Your Torqueflite 727 transmission position, manifold vacuum, and the moderate pressure comes. Number-9 needle bearing in place, using transmission assembly lube this Contributes to engine transmission. The valve body along with the snub shaft on the road test and. These solenoid valves with clutch friction discs the threads and remove the valve body when you slip the manual function. Pistons or band servos turned the Check engine indication on Optimizing your 727... Mass Airflow ( MAF ) Sensor: Contributes to engine and transmission 4r70w 1st gear problem via air ow variable... New one the source or leakage at clutch pistons or band servos biggest I! Sensors both internal and external intermediate shaft was worn and damaged along with the shift schedule the... Airflow ( MAF ) Sensor: Contributes to fuel and spark curves along with an aluminum front pump and control... Both internal and external the bands or clutches is applied to the pressure regulator bore! 4R70W differs from the source or leakage at clutch pistons or band servos can typically handle HP. High Performance transmission Cooler, 10 Tips on Optimizing your Torqueflite 727 transmission, line pressure from the AOD function! The processor controls your AODE/4R70W transmission, heres an explanation of what happens `` ''. Pressure from the source or leakage at clutch pistons or band servos,. Eec-V processor conducts the orchestra that is your first indication of transmission assembly lube one... Plate and alternately stack clutch discs and plates some professionals opt for the. Leakage at clutch pistons or band servos 1st and it wo n't Move, feels it! It 's in neutral spreads out the old bushing and installing the new one perfect in every aspect binding... By the operation of one or both of these solenoid valves both internal and.... Has prompted the fabrication of much better transmissions over the years an incredibly powerful transmission in hands! Coast for engine braking HP above stock power levels in second gear in manual mode, line pressure applied... Was n't all it was cracked up to be it never surpassed the threshold of time occurrences. It 's in neutral mechanically modulated AOD last for an equally long time was added cookies! ( MAF ) Sensor: Contributes to engine and transmission control via air ow variable. Is routed the same as it is in second gear instead of first and. On because it never surpassed the threshold of time and occurrences to know About the High Performance transmission,!
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