Transmission Oil Pump - Inspection

INSPECTION










1. Re-install the gears and check clearances.
2. Measure the clearance between the outer gear (1) and the pump pocket (2). Clearance should be 0.089-0.202 mm (0.0035-0.0079 in.).
3. Measure clearance between outer gear and crescent. Clearance should be 0.060-0.298 mm (0.0023-0.0117 in.).
4. Measure clearance between inner gear and crescent. Clearance should be 0.093-0.385 mm (0.0036-0.0151 in.).










5. Install the 9524 90° or the C-3339A Dial indicator (3) into the Scooter Block D-115-2A (2).
6. Zero the Dial Indicator (3) in the scooter block assembly on a flat surface (1) of the pump housing.
7. While applying slight downward pressure rotate the front of the scooter block side ways onto the outer gear (4).
8. Measure and record the gear height to the pump housing case clearance.
9. The clearance should be 0.020-0.046 mm (0.0008-0.0018 in.). If not replace the oil pump assembly.