Replacing Pump
REMOVE1. Remove the transmission/transfer case assembly.
2. Place the gearbox on the bench and remove the torque converter using torque converter handles 18G1501, taking care not to damage the converter/oil pump housing oil seal.
3. Remove the twelve hexagonal bolts (inner ring pattern).
4. Remove bellhousing and pump assembly from gearbox case and discard the gasket.
5. Remove the eight hexagonal bolts on the rear of the pump.
6. Screw in two of the bolts, diagonally opposite each other, tap lightly using a soft headed mallet; this will free the pump assembly from the intermediate plate.
REFIT
1. Fit new pump assembly aligning the dowel with its hole in the intermediate plate and press the pump housing home.
2. Secure the pump housing to the intermediate plate using the eight hexagonal bolts and tighten to 10 Nm (7 ft lbs).
3. Place the bellhousing and intermediate plate assembly on the bench, front face up. Using the oil pump rotation sleeve LST111, check that the pump gears rotate freely.
4. Remove bellhousing and pump assembly from gearbox case and discard the gasket.
5. Place the new gasket and disc washer onto the bellhousing and intermediate plate assembly using a light grease or Petroleum Jelly.
6. Fit bellhousing and intermediate plate assembly onto gearcase and secure with the twelve hexagonal bolts tightened to 46 Nm (34 ft lbs).
7. Place the end-float gauge LST111 onto the pump housing and check that the axial play is between 0.2-0.4 mm (0.008-0.016 in). If the end-float is excessive or tight, replace existing washer, situated at the rear of the intermediate plate, with suitable washer to give required end-float as stated above.
NOTE: If damage is apparent to the bolts they should be replaced.
8. Refit the torque converter into the housing using torque converter handles 18G1501, checking that the dimension from the converter fixing bolt boss to the converter housing face is 50 mm (1.96 in). If this dimension is achieved, the converter is properly seated in the housing.
9. Refit the transmission/transfer case assembly .