Question about GMC Cars & Trucks
Can you get to the oil pump with out taking the engine apart
You have to remove the engine front cover (over timing chain) and remove the oil pan to get the oil pump in and out. You don't have to remove the heads, however.
Removal & Installation
4.8L, 5.3L, 6.0L & 6.2L Engines
Fig. Exploded view of the oil pump mounting-4.8L, 5.3L, 6.0L and 6.2L engines
Fig. Oil pump disassembly-4.8L, 5.3L, 6.0L and 6.2L engines
Do not allow dirt or debris to enter the oil pump assembly, cap ends as necessary.
The internal parts of the oil pump assembly are not serviced separately (excluding the spring). If the oil pump components are worn or damaged, replace the oil pump as an assembly. Do not attempt to repair the wire mesh portion of the pump and screen assembly.
Engine front cover Oil pan Oil pump screen bolt and nuts Oil pump screen with O-ring seal. O-ring seal from the pump screen. Discard the O-ring seal. Remaining crankshaft oil deflector nuts. Crankshaft oil deflector Oil pump bolts
Oil pump To install:
Inspect the oil pump and engine block oil gallery passages. These surfaces must be clear and free of debris or restrictions.
Lubricate a NEW oil pump screen O-ring seal with clean engine oil.
Push the oil pump screen tube completely into the oil pump prior to tightening the bolt. Do not allow the bolt to pull the tube into the pump.
Oil pump bolts. Tighten the oil pump bolts to 18 ft. lbs. (25 Nm). Crankshaft oil deflector
NEW O-ring seal onto the oil pump screen
Oil pump screen Oil pump screen bolt and the deflector nuts. Tighten the bolt to 106 inch lbs. (12 Nm) and the nuts to 18 ft. lbs. (25 Nm). Oil pan Engine front cover
Posted on Mar 06, 2015
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