Step 8: Install Reverse Clutches The reverse clutch discs alternate with plates. Step 5: Reinstall Bypass Clutch Control Valve Clip Check the bypass clutch control valve for smooth operation using compressed air. Does the engine stall when the transmission selector is placed in gear? To improve shift quality, Ford eliminated the split-torque function in third and fourth gears. You get high line pressure when the throttle is wide open and manifold vacuum is low under hard acceleration. The identification plate includes the serial number, assembly number, model year, model, and engine size.
The direct clutch is applied, tying the input shaft to the planet carrier to the smaller inside input shaft stub shaft. Be very careful not to scratch the clutch piston. The number-5 needle bearing is already installed here. If reused, it must be cleaned. 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.
Step 5: Install Anti-Clunk Spring The anti-clunk spring arrow , which prevents the center support from moving and clunking, acts as a shock absorber for the center support. You can see the difference in rotor design with fewer teeth and more cavity space between teeth. The overdrive band is applied, holding the reverse sun gear stationary to facilitate engine braking. The 2-3 shift-point is also raised by a factor of 5. Torque Converter Is the torque converter doing its job? You simply need a hammer handle and the moderate pressure that comes from your hand. Slowly walk the tool around, protecting the seal lip. This could be caused by a defective solenoid, wiring problem, or bad processor.
Step 7: Install Forward Clutch Steels Alternate the forward clutch plates with clutch friction discs. Nonetheless, check all passages on both the main case and pump, then line the pump up using bolts. Step 7: Install Direct Clutch Hub The direct clutch hub goes up against the number-7 thrust bearing. As you mate clutch assemblies, ensure complete mating and seating before loading each assembly into the case. Step 4: Install Reverse Clutch Piston Snap Ring The reverse clutch piston snap ring pops into the clutch hub and retains the piston.
In cases where the vehicle will not shift out of gear, the car should not be driven, as this is a safety hazard that can also cause further transmission damage. You could have excessive slippage on your intermediate clutch pack, or a problem with your shift solenoids. Step 4: Lift Off Cover Plate Remove the valve body cover plate and inspect the passages for contaminants. The manual shifter valve has a bolt-on detent to lock shift positions. Torque Converter Is the torque converter doing its job? Step 5: Install Belleville Spring and Snap Ring Critical Inspection Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation.
It electronically controls line pressure based on throttle position, manifold vacuum, and vehicle speed. Wet frictions allow for more accurate clearances during assembly. If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. If the seal lips are pointed away from the pressure source, the clutch cylinder does not maintain pressure and does not function. Take note of how the rollers fit into the cage.
The planet carrier splines inside the ring gear with gentle back-and-forth twisting to achieve proper engagement. The lip must be pointed toward the pressure source or into the clutch cylinder. From left to right in the case are the shift accumulator A , low-reverse band servo B , and overdrive band servo C. I have read in one post that this transmission is notorious for having a spring in the accumulators break. If spring is broken in a valve body location controling an accumulator or servo there will be harsh on engagements.
Speedway Motors has swap kits for the Ford flathead V-8. They differ from a rebuilt transmission in the fact that they are as good as a new transmission at a greatly reduced price and often include modifications and upgrades that make them much more durable. If there is a hole in the separator plate, install the blue spring. If you point the seal lip toward the intermediate clutches, you will have an internal hydraulic leak and no intermediate clutch function. Note the proper installation and how the rollers are located arrows.
With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo. Do you know if there is such thing as a valve body rebuild kit? A bad output shaft speed sensor could also cause erratic shifting, but these rarely fail. Mark and check twice, cut once. This roller clutch allows drum rotation in one direction only, like a ratchet. The planetary one-way clutch overruns. The seal lip should be pointed toward the pressure source inside the bore. Step 6: Stack Intermediate Clutch Steels and Frictions The intermediate clutch discs and plates stack up like this.
This lack of engine braking will make first or second feel like neutral if the vehicle speed is high enough. Wet frictions allow for more accurate clearances during assembly. Copyright 2019 Global Transmission Parts. If there are no serious signs of rotor or cavity wear, the pump can be returned to service. Each is unique to its manufacturer and has been developed to operate accordingly.