The direct clutch should be fitted with new steels and frictions. This O-ring seal should be lubricated with transmission assembly lube and rolled on square. The 2-3 shift valve moves under pressure against spring pressure. I was personally frustrated with the lack of any useful information on performing the fluid change procedure, so I researched and researched and put together this guide. Step 6: Install C-Clip Using a spring compressor or C-clamps, compress the forward clutch piston return spring and install the retaining C-clip. You must get the correct filter for the pan you order.
Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. Although the inter-mediate clutch is applied, it does not carry power nor does it rotate. Use a little leverage to install the snap ring. Because these springs are attached to the pressure plate, they should all be present and in serviceable condition. Installing them wet gives them a good start against freshly resurfaced clutch drums.
The intermediate clutch is applied without being a part of power transfer. Not getting the transmission fluid changed: Over time, the transmission fluid will become contaminated from normal wear and exposure to outside elements. Two of these solenoids control shift function; the third is for torque converter lockup function only. It is important that you identify which transmission you have so that the pan you order will have the correct bolt pattern. Optional — place the junk cardboard under the bucket so that you do not get any spills onto your garage floor. An aftermarket flat gasket is recommended and should be available in any auto parts store.
Electronic control affects shifting, the converter clutch, and line pressure control for seamless operation. You need to take it out either way. Step 9: Install Housing Gasket Performance Tip The extension housing gets this silicone-lined gasket on the extension housing prevents leaks. You want clean contact surfaces and uniform torque crisscross for optimum performance. Copyright 1999-2013, All Rights Reserved. As the 4R70W evolved to the 4R75W, an input shaft sensor was added. Get under the truck and leave the vinyl hose connected, but move it out of the way.
Pressure causes the lip to seal. I have done probably 10, 4R70W transmission services and this is the first time this happened. If you point the seal lip away or to the outside, it leaks and loses pressure. One planetary member is driven while the other is held. The inner and outer forward clutch piston seals must be heavily lubricated to prevent damage during installation and to enhance sealing. Band assemblies, such as clutches, can be installed wet or dry.
What is the engine idle speed? Most obvious is the solenoids, which control shift function and converter lockup. Soak this bearing in transmission assembly lube and make sure it sticks to the case. If you are not familiar with the way this transmission is designed in the F150, refer to the diagram below. Torque the bolts in a strict pattern to prevent warping. This plug is pushed into the hole as the dip stick is being installed.
Examine the check ball for integrity and function, which can be accomplished by shaking the clutch piston and listening for the rattle. On some gears, you may experience a slight delay in movement while fluid fills the valve body. Cages become damaged and at times this is even harder to see. Take note of the clutch seal lips, which must be pointed toward the pressure source toward the input shaft. Step 2: Install Valve Body Position the valve body gasket and install the valve body with all 22 Metric bolts checked and in place.
This pan features extra capacity, cooling fins and strong cast aluminum construction. Second Gear in Manual The forward clutch is applied, connecting the input shaft outer to the forward sun gear. Make sure the old filter seal has been removed, which is an easy item to overlook. The needle bearing, also known as a Torrington bearing, reduces internal rolling and thrust friction. Attachment bolts receive 80 to 100 in-lbs not ft-lbs. The cooled transmission fluid then returns to the transmission where it is utilized in the valve body and torque converter to keep the vehicle moving forward. Torque the extension housing bolts to 16 to 20 ft-lbs.
Ford also recommends performing your troubleshooting step-by-step so you never miss a critical step that could lead you right to the problem. You have now emptied the bulk of the transmission fluid in the pan. The transmission must be removed to check torque converter function. Step 2: Install Low-Reverse Servo Piston Cover Install the low-reverse servo cover and snap ring. With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo.
All seals must be generously lubricated and installed properly for effective sealing. Never reuse old bearings or seals. Slowly walk the tool around, protecting the seal lip. This Tech Tip is From the Full Book,. Pressure against the seal lip is self-sealing and fail-safe. Closely inspect all hard parts for scoring and cracking. Lincoln Town Cars and limos based on the Town Car have installed this pan.