Removal Procedure
- Remove the oil pan. Refer
to
Oil Pan Replacement
.
- Remove the engine front cover. Refer to
Engine Front Cover Replacement
.
- Remove the oil pump screen bolt and nuts.
- Remove the oil pump screen with O-ring seal.
- Remove the O-ring seal from the pump screen.
- Discard the O-ring seal.
- Remove the remaining crankshaft
oil deflector nuts.
- Remove the crankshaft oil deflector.
- Remove the oil pump bolts.
Important: Do not allow dirt or debris to enter the oil pump assembly, cap end
as necessary.
- Remove the oil pump.
- Clean and inspect the oil pump. Refer to
Oil Pump Cleaning and Inspection
in Engine Mechanical - 4.8L, 5.3L,
and 6.0L Unit Repair.
Installation Procedure
- Align the splined surfaces
of the crankshaft sprocket and the oil pump drive gear and install the oil
pump.
- Install the oil pump onto the crankshaft sprocket until the pump
housing contacts the face of the engine block.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the oil pump bolts.
Tighten
Tighten the oil pump bolts to 25 N·m (18 lb ft).
- Install the crankshaft
oil deflector and nuts until snug.
- Lubricate a NEW oil pump
screen O-ring seal with clean engine oil.
- Install the NEW O-ring seal onto the oil pump screen.
Important: 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.
- Align the oil pump screen mounting brackets with the correct crankshaft
bearing cap studs.
- Install the oil pump screen.
- Install the oil pump screen bolt and nuts.
Tighten
- Tighten the oil pump screen bolt to 12 N·m (106 lb in).
- Tighten the crankshaft oil deflector/oil pump screen nuts to 25 N·m
(18 lb ft).
- Install the engine front cover. Refer to
Engine Front Cover Replacement
.
- Install the oil pan. Refer to
Oil Pan Replacement
.