Your best bet on preventing overheating is to follow the recommend towing and load limits suggested by the factory. Use plenty of lubrication as a pre-lube and for adhesion. Did the problem arise after transmission service or part replacement? Step 9: Install Direct Clutch Snap Ring With all clutches and steels installed and clearances checked. Step 11: Install Number-2 Needle Bearing Lay the number-2 needle bearing in place, using plenty of transmission assembly lube for lubrication and adhesion. Slowly walk the tool around, protecting the seal lip. Then re-torque them for a final check. The next items to check are the number-3 and number-4 sealing rings.
Step 12: Install Number-4 Thrust Needle Bearing The number-4 thrust needle bearing installs inside the forward sun gear drive shell. This allows for a pressure path to the direct clutch engaged. Apply uniform pressure to the piston while feeling for a smooth transition. Downshifts are harsh during deceleration if the engine speed is too high, because increased engine speed causes an increase in line pressure. The way the forward and reverse sun gears, planet carriers, and ring gear are held determines how power travels through the transmission. Pressure is instead directed to the overdrive servo regulator valve.
Step 11: Install Intermediate Stub Shaft The intermediate stub shaft splines into the planet carrier. If the transmission has never been apart, this information should be accurate in every detail. If you get a harsh 2-3 upshift, the problem is likely the 2-3 accumulator or excessive line pressure. The Ravigneaux gearset is the workhorse that does the work of two planetaries. He seems to think the torque convertor is going bad and recommended that since it has 196K miles on it, I should have the transmission rebuilt About 2K since if I replace just the convertor About 1K , the rest of the clutches could go before too long and take the new convertor with it. It has four forward speeds and was used in vehicles starting in 2003. The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement.
When the second oil cri-sis arrived in 1979, it brought with it increased fuel-economy standards imposed by the federal government. The plates should have been resurfaced or replaced. Common Complaints With the Ford 4R75W Transmission Posted by on Friday, March 8th, 2013. Direct Clutch Assembly Step 1: Install Direct Clutch Piston Seals When removing the old direct clutch piston seals, observe the seal installation and lip direction. However, for the sake of longevity, replace yours. Do you know if there is such thing as a valve body rebuild kit? When you build, use new Torringtons if possible.
A seal lip pointed the wrong way is a guaranteed leaker. Best of all, the price is low. 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. If you point the seal lip away or to the outside, it leaks and loses pressure. Too much line pressure and you can break the transmission case. Master Overhaul Kit with friction and steel plates, 2.
Step 7: Install Electronic Pressure Control Solenoid Important! Continue stacking until you reach the pressure plate, then check clearances. The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft stub shaft. Relax the throttle to get overdrive lockup and fuel-efficient direct drive between torque converter shell and output shaft. Use a stiffer spring and you get a higher shift-point. I have read in one post that this transmission is notorious for having a spring in the accumulators break. Second Gear in Manual The forward clutch is applied, connecting the input shaft outer to the forward sun gear. This is the natural color version.
Is it a noise or vibration? I tried doing a search for a thread that steps you through it To familiarize myself with the process but could not find anything. Or get a copy of a transmission repair book for you unit showing where everything is. Any seal bind is a guaranteed leak. This time Detroit was ready with more-fuel-efficient automatics with direct mechanical lockup torque converters. 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. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function.
If spring is broken in a valve body location controling an accumulator or servo there will be harsh on engagements. To improve shift quality, Ford eliminated the split-torque function in third and fourth gears. Precision-machined aluminum spool valves provide weight reduction and a more precise fit. 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. Step 4: Install Reverse Clutch Piston Snap Ring The reverse clutch piston snap ring pops into the clutch hub and retains the piston.
Use plenty of lubrication, then drive the seal in. Not enough line pressure and you get slippage. I am thinking about getting one of those If they exist and springs for the accumulators Since they are cheap. The alternator was locking up, slipping the belt and loading the motor down. This allows for proper seating and prevents warping.