Hummer H1 Service Manual page 63

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2-26 Engine
Front Cover Installation
1. Install new camshaft thrust plate and spacer if required.
2. Clean front cover and engine block sealing surfaces with
carb cleaner and wipe dry.
3. Install drive keys in camshaft and crankshaft. Be sure keys
are seated.
4. Assemble and install timing chain and sprockets
(Figure 2-26). Check timing mark alignment before
proceeding.
5. Install injection pump
(Figure 2-26). Timing mark on gear should be facing
upward (12 oÕclock position). Then install drive gear
attaching washer and bolt. Tighten bolt to 55-60 lb-ft (75-
81 N¥m) torque.
INJECTION PUMP
DRIVE GEAR
TIMING CHAIN
CRANKSHAFT
SPROCKET
Figure 2-26: Timing Chain, Sprockets, and Drive
Gear Installation
drive gear on camshaft
THRUST PLATE
AND SPACER
DRIVE KEYS
CAMSHAFT
SPROCKET
CAMSHAFT
CRANKSHAFT
6. Install new seal in front cover with tool J
7. Apply sealer to front cover as follows:
¥ Use anerobic sealer, such as Loctite 510, on cover
surfaces that contact engine block.
¥ Use RTV-type sealer, such as Loctite 592, on oil pan
and oil pan contact surface of front cover.
¥ Refer to sealer application diagram (Figure 2-27).
USE RTV TYPE
SEALANT HERE
(OIL PAN CONTACT
SURFACE)
Figure 2-27: Front Cover Sealer Application
8. Install front cover on engine block (Figure 2-28). Be sure
cover is fully seated on engine block dowels, engine
block, and oil pan, before installing cover bolts.
9. Install front cover attaching bolts. Then tighten bolts as
follows:
¥ Tighten cover-to-engine block bolts to 33 lb-ft (45
N¥m) torque.
¥ Tighten oil pan-to-front cover bolts to 4-10 lb-ft (5-14
N¥m) torque.
10. Install injection pump gasket on front cover studs
(Figure 2-28:).
Ð
22102.
FRONT COVER
USE ANEROBIC
SEALER HERE
Diagram
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