Front Pump

Front Pump











The front seal can be replaced after the pump has been installed on the transmission using T5OT-1OO-A and TOOL-1175-AC for removal, and Tool T63L-77837-A for installation (Figs. 35 and 36).

Disassembly






1. Remove the two seal rings and the selective thrust washer (Fig. 37).
2. Remove the large square-cut seal from the outside diameter of the pump housing.
3. Remove the five bolts that secure the stator support to the pump housing. Lift the support from the housing.
4. Remove the drive and the driven gear from the housing.
5. If the pump housing bushing is worn or damaged, replace it using the handle and Tool T66L-7003-02 shown in Fig. 38. Place the new bushing in position, making sure the half moon slot in the bushing is on top and in line with the oil lube hole near the seal bore. Press the bushing in 1.52-2.O3 mm (O.O6O-O-O8O inch) below the front face of the bushing bore. Use ToolT66L-7003-C2 and handle to seat the bushing properly. After assembly, the half moon slot must be in past the lube hole to provide proper lubrication.

Assembly

1. Install the drive and driven gears in the pump housing. Each gear has either an identification mark or chamfered teeth on one face. The identification mark or the chamfered surface on each gear must be installed toward the front of the pump housing.
2. Position the stator support in the pump housing and install the five attaching bolts. Tighten bolts to 17-21 N.m (12-16 ft-lbs).
3. Carefully install two new seal rings on the stator support. Make sure that the ends of the rings are engaged to lock them in place. Install a new square cut seal on the outside diameter of the pump housing.
4. Install the selective thrust washer. Make sure that the correct thickness selective washer is being used to obtain the specified end play. Refer to Specifications. Specifications
5. Place the pump on the converter, making sure that the drive gear engages the converter hub. Rotate the pump to make sure that the gears rotate freely.