Transaxle Cleaning & Valve Body Procedure

1. Remove the transaxle form the car. Refer to the 1989 Probe Shop Manual, Section 17-01 for service details.

2. Disassemble and clean the transaxle. Refer to the 1989 Probe Shop Manual, Section 17-01 for service details.

3. Inspect all internal components for wear or damage. Replace as required.

4. Inspect the turbine shaft, output gear and teflon seals for wear or damage. Replace as required.

5. Replace the valve body assembly. Refer to the 1989 Probe Shop Manual, Pages 17-01-99 through 101 for service details.

6. Re-assemble the transaxle.

7. Adjust the 2-4 band as follows:

a. Remove the lower oil pan.

b. Loosen the lock nut.

c. Tighten the adjuster rod to a torque of 96 lb.in. (11 N-m).

d. Back off the adjuster 2 full turns.

e. Tighten the lock nut to a torque of 18-29 lb.ft. (24-39 N-m).

8. Install the transaxle in the car. Refer to the 1989 Probe Shop Manual, Section 17-01 for service details.

9. Adjust the transaxle line pressure as follows:

a. Bring the vehicle up to normal operating temperature.

b. Raise the vehicle on a hoist.
c. Remove the left front tire and wheel assembly from the vehicle.

d. Remove the six (6) screws holding the splash shield to the inner wheel well.

e. Remove the square head plug from the transaxle case. The plug is marked with an "U".

Figure 1:

f. Install the Rotunda Transmission Test Adapter 014-00456 into the hole where the square head plug was removed and install Pressure Gauge T57L-77820-A on the transaxle test adaptor, Figure 1.

g. Partially lower the vehicle.

h. Loosen the locknuts on the throttle cable.

i. Apply the parking brake.

j. Place the transaxle in "P" park and idle the engine at 700-800 RPM.

k. Leave the tranxaxle in "P" Park.

Figure 2:

l. Adjust the line pressure to 66 psi by moving the locknuts either clockwise or counter-clockwise, Figure 2.

NOTE: CLOCKWISE MOVEMENT WILL INCREASE LINE PRESSURE. COUNTER-CLOCKWISE MOVEMENT WILL DECREASE LINE PRESSURE.

m. Tighten the locknuts on the throttle cable.

NOTE: WHILE WATCHING THE PRESSURE GAUGE, MOMENTARILY INCREASE THE ENGINE RPM. THIS SHOULD INCREASE THE PRESSURE READING ON THE GUAGE. MAKE SURE THAT THE PRESSURE READING IS STILL AT 66 psi WHEN AT IDLE. REPEAT THIS AT LEAST THREE (3) TIMES.

n. Raise the vehicle.

o. Remove the transaxle test adaptor and pressure gauge.
p. Re-install the square head plug in the transaxle case.

q. Re-install the splash shield in the inner wheel well.

r. Re-install the left front tire and wheel assembly.

s. Lower the vehicle.

10. Road test for proper operation and shift patterns. Use the 4EAT tester during the road test to confirm correct signals for all shifts. Refer to TSB 89-5A and TSB 89-2-10.

NOTE: IF THE VEHICLE HAS HARSH OR SOFT SHIFTS AND WAS BUILT PRIOR TO JULY 1988, REPLACE THE 4EAT ELECTRONIC CONTROLLER.