Diesel Data: Automotive Repair

Valve Body Assembly, Renew


Valve Body Assembly, Renew

^ Raise hood and fit wing cover.

^ Raise the vehicle on a ramp.

^ Drain the transmission lubrication system.

^ Remove the fluid pan.

^ Remove the fluid filter.

^ Remove the transmission internal harness.

^ Remove the internal lubrication pipe.

^ Remove the manual detent spring assembly.

^ Remove the internal dipstick stop.

^ Remove the valve body and accumulator assembly.

^ Note the internal harness runs for assembly purposes.

^ Disconnect the internal harness plug from 'A' shift solenoid.

^ Disconnect the internal harness plug from 'B' shift solenoid.

^ Disconnect the internal harness plug from the temperature sensor.

^ Disconnect the internal harness plug from the pulse width modulator (TCC solenoid).

^ Disconnect the internal harness plug from the variable force motor and place aside.

^ Release and remove 'A' shift solenoid to valve body securing screw.

^ Invert valve body assembly.

^ Release and remove accumulator block to valve body securing bolts.

^ Remove accumulator block assembly from valve body.

^ Remove and discard accumulator block to sandwich plate gasket.

^ Remove sandwich plate from valve body.

^ Remove and discard sandwich plate to valve body gasket.

^ Clean all relevant parts and faces.

^ Place valve body aside.

^ Place new valve body - supplied with new valves, solenoids etc - to front.

^ Fit new gasket to valve body.

^ Fit sandwich plate to valve body.





^ Fit two bolts to sandwich plate / valve body for alignment purposes, see Fig. 1.

Note: Select the close fitting bolt hole of the valve body and the elongated hole of the sandwich plate.

^ Fit new accumulator block to sandwich plate gasket.

^ Fit springs to accumulator block pistons.

^ Fit and align accumulator block, pistons and springs assembly to valve body sandwich plate.

^ Depress accumulator assembly against spring pressure.

^ Fit and tighten accumulator block to valve body securing bolts.

^ Remove the two bolts from sandwich plate / valve body (used for alignment purposes).

^ Invert valve body assembly.

^ Connect internal harness plug to variable force motor.

^ Connect internal harness plug to pulse width modulator.

^ Connect internal harness plug to temperature sensor.

^ Connect internal harness plug to 'B' shift solenoid.

^ Connect internal harness plug to 'A' shift solenoid.








^ Refit valve body and accumulator assembly to transmission, ensure that the nine checkballs are correctly located, see Figs. 2 and 3.

^ Refit internal dipstick stop.

^ Refit manual detent spring assembly.

^ Refit internal lubrication pipe.

^ Fit new internal harness multipin socket O-ring seal.

^ Refit multipin socket to main case and connect external harness.

^ Refit fluid filter.

^ Refit fluid pan.

^ Lower the vehicle on the ramp.

^ Refill the transmission with fluid.

^ Lower the hood.