Rocker Cover Installation - Hummer H1 Service Manual

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ROCKER COVER INSTALLATION

1. Clean mounting flanges on both rocker covers and cylin-
der heads. Wipe flange sealing surfaces off with isopropyl
alcohol to prepare surface for sealer application.
2. Apply RTV-type sealer to cover sealing surfaces.
3. Align and install covers on cylinder heads (Figure 2-182).
4. Install cover attaching bolts and studs and tighten to 13-25
lb-ft (18-34 N•m). Tighten fasteners starting at center and
working toward each end.
5. Install all necessary fuel line and wire harness brackets on
covers.
WATER PUMP FIRST
LOWER BOLT
3.5 in.
(89 mm)
Figure 2-180: Crankshaft Index Position for Rocker
Arm Installation
05745159
O(TDC) MARK
ON TIMING TAB
PUSHROD
Figure 2-181: Rocker Arm and Shaft Installation
FUEL LINE
SUPPORT BRACKET
Figure 2-182: Rocker Cover Installation
Engine 2-91
RETAINER
ROCKER
ARM AND
SHAFT
ASSEMBLY
ROCKER COVER
S02-084