56. Oil Pan Cleaning and Inspection

Oil Pan Cleaning and Inspection (LS3 with Z52 Option, LS7, LS9)




1. Remove the oil filter fitting (438), as required.




2. Remove the oil pump suction pipe (407), bolts (405), and gasket (406).
3. Discard the gasket (406).
4. Clean the suction pipe and inspect for debris, restrictions, or other damage.




5. Remove the oil pan drain plugs (1).
6. Inspect the oil pan drain plugs threads for damage.




7. Clean the oil pan in solvent.
Warning: Refer to Safety Glasses Warning (Safety Glasses Warning).

8. Dry the oil pan with compressed air.
9. Inspect the oil pan for the following conditions:

* Damaged gasket surfaces (1)
* Restrictions within the oil passages (2) of the pan
* Damaged oil filter seal surface (3)
* Threaded bolt holes (4) for damage




10. Inspect the oil pan internal oil passages (1-4) for restrictions.




11. Inspect the oil hose mating surfaces (1) for scoring or other damage.




12. Inspect the oil pan plug (457) for a loose fit or leakage.





Caution: Refer to Fastener Caution (Fastener Caution).

13. Install the oil pan drain plugs (1) and tighten to 25 Nm (18 lb ft).




14. Install the oil pump suction pipe (407), bolts (405), and gasket (406).
15. Tighten the oil pump suction pipe bolts (405) to 12 Nm (106 lb in).




16. Install the oil filter fitting (438), as required, and tighten to 55 Nm (40 lb ft).