3. Oil Pump Inspection

Oil Pump Inspection





1. Check body clearance of driven gear (1). Push driven gear (2) to one side of oil pump body (3). Using a feeler gauge, measure clearance between driven gear (2) and body (3). If clearance exceeds standard value, replace gear.
Clearance between driven gear and body
Standard: 0.075 - 0.15 mm (0.00295 - 0.0059 inch)





2. Check tip clearance of both drive and driven gears. Measure radial clearance between gear tooth tip and crescent (1). If clearance exceeds standard value, replace gears.
Clearance between driven gear and crescent
Standard: 0.010 - 0.248 mm (0.0004 - 0.0098 inch)
Clearance between drive gear and crescent
Standard: 0.013 - 0.292 mm (0.0005 - 0.0115 inch)





3. Check side clearance of both gears.
Using a straightedge (1) and a feeler gauge, measure side clearance between gears and pump body.
If clearance exceeds standard value, replace gears.

Side clearance between gears and oil pump body
Standard: 0.02 - 0.05 mm (0.0008 - 0.0019 inch)
Drive gear and driven gear have some kinds of thickness as listed.

Drive gear driven gear thickness
Drive Gear 9.440 - 9.449 mm (0.3717 - 0.3720 inch)
Driven Gear 9.440 - 9.449 mm (0.3717 - 0.3720 inch)
Drive Gear 9.450 - 9.459 mm (0.3721 - 0.3724 inch)
Driven Gear 9.450 - 9.459 mm (0.3721 - 0.3724 inch)
Drive Gear 9.460 - 9.470 mm (0.3725 - 0.3728 inch)
Driven Gear 9.460 - 9.470 mm (0.3725 - 0.3728 inch)
Drive Gear 9.471 - 9.480 mm (0.3729 - 0.3732 inch)
Driven Gear 9.471 - 9.480 mm (0.3729 - 0.3732 inch)
Drive Gear 9.481 - 9.490 mm (0.3733 - 0.3736 inch)
Driven Gear 9.481 - 9.490 mm (0.3733 - 0.3736 inch)
If side clearance of the thickest gear is out of specification, replace oil pump body or assembly and stator shaft subassembly.