Front Cover Oil Seal Replacement - Hummer H1 Service Manual

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2-22 Engine

FRONT COVER OIL SEAL REPLACEMENT

1. Remove crankshaft pulley and torsional damper. Refer to
procedures in this section.
2. Remove oil seal front cover with tool J
(Figure 2-19).
3. Clean seal contact surface of torsional damper. Smooth
surface, if necessary, with 180 grit emery. Then polish
with 220 grit emery coated with engine oil. Seal surface
must be smooth to avoid damaging new seal.
4. Install new seal in cover with tool J
seal goes toward interior of cover.
5. Lubricate new seal and seal surface of torsional damper,
with engine oil.
6. Install keys in crankshaft. Then align and install torsional
damper. Install damper belt and washer. Tighten bolt to
140-160 lb-ft (190-217 N¥m).
7. Install crankshaft pulley and serpentine belt. Refer to
procedure in this section.
OIL SEAL
TOOL
J22102
Figure 2-19: Front Cover Oil Seal Location
Ð
22102 or pry tool
Ð
22102. Open end of
FRONT COVER
OIL PUMP DRIVE
Removal
1. Remove engine cover/console for access to rear of engine.
2. Remove the turbocharger as described in this section.
3. Clean surface of drive, block and drive clamp with carb
cleaner.
4. Remove bolt that secures oil pump drive clamp to block
(Figure 2-20).
5. Remove oil pump drive with turn and lift motion. Use
channel lock or use grip pliers to remove drive.
6. Remove gasket from block or drive.
7. Cover pump drive opening in block to prevent dirt entry.
Installation
1. Install new gasket on oil pump drive.
2. Position and insert oil pump drive in block. Turn drive
back and forth to seat it as needed.
3. Install drive clamp and bolt. Tighten bolt to 25-37 lb-ft
(34-50 N¥m) torque.
4. Install turbocharger as described in this section.
5. Install engine console/cover.
CLAMP
Figure 2-20: Oil Pump Drive Removal/Installation
¨
ENGINE SPEED
SENSOR
OIL PUMP DRIVE
GASKET
S02-012.2