2 . Pressure regulator spring into the pump cover. 3 . Retaining pin into the pump cover. 4 . Drive gear and shaft into the pump body. 5 . Idler gear into the pump body. IMPORTANT: Match together the index marks on the two gears made during disassembly. 6 . Pump cover. NOTICE: Refer to “Notice” on page 1. 7 . Bolts. Tighten • Bolts to 12 N · m (106 lb. in.) Figure 12-46 Oil Pump and Components Clean • All parts in clean solvent and dry them with compressed air. Inspect • Pump body for cracks, wear, or other damage. • Inside of the cover for cracks and wear that would permit oil to leak past the ends of the gears. • Idler and drive gears for wear.
• Drive gear and shaft for lack of fit in the pump body. IMPORTANT: The pump gears, cover, and body are not serviced separately. If any of the parts are damaged or worn, the entire oil pump assembly must be replaced. Inspect • Oil pump screen damage or loose fit of the pipe. • Pressure regulator valve for fit. The regulator valve should slide freely in its bore without sticking or binding. Install or Connect Tool Required: J 21882 Pickup Tube and Screen Installer 1 . Pressure regulator valve into the pump cover. IMPORTANT: Replace the pressure relief valve spring when reusing the oil pump assembly. G643 (E) Service Manual Chapter 3. Engine Mechanical System 84