Lubricating Oil Pump (7-08) Section 7 - Lubricating Oil System - Group 07 M11 Page 7-16 Use solvent to clean the oil pump parts. Dry with com- pressed air. Inspection Visually inspect the gear pockets in the pump body for excessive wear or scoring. If excessive wear or scoring is found, the oil pump must be replaced. Caution: To avoid oil pump failure and engine damage, do not attempt to drill and ream the oil pump body and cover plate. Measure the inside diameter of the shaft bores in the oil pump body and cover plate. Shaft Bore I.D. mm in 18.720 MIN 0.7370 18.746 MAX 0.7380 Visually inspect the internal oil pump gears for cracked or broken teeth and excessive wear.
If cracked or broken teeth or excessive wear is found, the gear(s) must be replaced.