Installing them wet gives them a good start against freshly resurfaced clutch drums. Check this pressure plate for freedom of movement before installing the pump. Shift Solenoid 'C' Electrical P0764. Make sure you have plenty of lube and smooth piston travel. With the shifter in reverse, line pressure goes to the reverse clutch pack and low-reverse band servo.
Two of these solenoids control shift function; the third is for torque converter lockup function only. Shift Solenoid 'B' Performance or Stuck Off P0757. Internal Components Installation Step 1: Install Low-Reverse Band The output shaft and ring gear assembly have been installed along with the planet carrier. All of these items are checked by dropping the valve body and visually inspecting them. Step 5: Install Belleville Spring and Snap Ring Critical Inspection Inspect the reverse clutch Belleville return spring for cracks and distortion prior to installation. Shift Solenoid 'A' Intermittent P0765.
Step 7: Install Direct Clutch Hub The direct clutch hub goes up against the number-7 thrust bearing. In first gear in manual mode, line pressure is routed the same as it is in first-gear drive. Shift Solenoid 'E' Stuck On P0773. Step 8: Install Intermediate Clutch Pressure Plate Check for proper spring alignment and positioning. Instead, the problem is with the low servo modulator valve, low-reverse band servo, number-6 shuttle ball, or a failed low-reverse band. Park gives the same result but also engages the parking pawl. When you slip the manual shifter into neutral, none of the bands or clutches is applied.
Also install the input shaft sealing rings at this time. Shift Solenoid 'D' Electrical P0769. If you choose to replace the solenoid yourself, the parts supplier you purchase the solenoid from will factor into your total repair. This type of scan will necessitate a visit to a transmission shop or car dealership. If the seal lip is pointed away from the bore, it does not hold pressure and the servo piston does not function. A seal lip pointed the wrong way is a guaranteed leaker. Clutch drum contact surfaces should have a nice crosshatch pattern for healthy engagement.
Then re-torque them for a final check. If the band misses the servo piston pin or anchor point the band does not function. Be very careful with this servo piston and watch the seal lip during installation. Use plenty of lubrication on the center support bushing. This charge is normally referred to as a diagnostics fee.
Pressure Control Solenoid 'A' Performance or Stuck Off P0747. One planetary member is driven while the other is held. Cages become damaged and at times this is even harder to see. Too much line pressure and you can break the transmission case. Step 10: Pack Pump Rotor Cavity with Assembly Lube Professional Mechanic Tip Because you want immediate fluid flow when the engine is fired, pack the pump with assembly lube and transmission fluid for a good prime.
Output Speed Sensor Circuit No Signal P0723. Adjust clearance via the clutch plates, which are. Is the noise or vibration in rhythm with the engine, driveline, or wheels? Once this ring is seated, check its security. There should be nine springs in serviceable condition free of distortion. Use a bushing driver of the correct size and a press. Gather all parts on a hospital-clean work surface and organize them into groups of unassembled subassemblies that make up the various components.
Weak or soft engagement in any gear indicates insufficient line pressure from the source or leakage at clutch pistons or band servos. Step 7: Install Top Clutch Plate Once you have established the intermediate clutch clearances, which are 1. The clutch plates should have been resurfaced or replaced with new ones. Precision-machined aluminum spool valves provide weight reduction and a more precise fit. Apply transmission assembly lube on all contact surfaces. Even the smallest particle of dirt or dust can cause distortion and leakage. Shift Solenoid 'A' Performance or Stuck Off P0752.