Transmission Oil Pump - Disassembly

DISASSEMBLY










When disassembling the transaxle it is necessary to inspect the oil pump for wear and damage.

1. Remove the six reaction shaft support-to-pump body bolts (1).










2. Remove reaction shaft support (3) from pump body (1).










3. Remove the pump gears (2,3) and check for wear and damage on pump body (1) and gears.










4. Re-install the gears (2) and check clearances.
5. Measure the clearance between the outer gear and the pump pocket (1). Clearance should be 0.089-0.202 mm (0.0035-0.0079 in.).










6. Measure clearance between outer gear (2) and crescent (3). Clearance should be 0.060-0.298 mm (0.0023 - 0.0117 in.).










7. Measure clearance between inner gear (4) and crescent (3). Clearance should be 0.093 - 0.385 mm (0.0036 - 0.0151 in.).
8. Position an appropriate piece of Plastigage across both pump gears.
9. Align the Plastigage to a flat area on the reaction shaft support housing.
10. Install the reaction shaft to the pump housing. Tighten the bolts to 27 Nm (20 ft. lbs.).
11. Remove bolts and carefully separate the housings. Measure the Plastigage following the instructions supplied.
12. Clearance between both gear end faces and the reaction shaft support should be 0.020-0.046 mm (0.0008-0.0018 in.).