Hummer H1 Service Manual page 119

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2-82 Engine
CRANKSHAFT MAIN CAP TORQUE SEQUENCE
1. Tighten the inner 12 mm bolts to 55 lb-ft (75 N.m).
2. Retighten the inner 12 mm bolts to 55 lb-ft (75 N.m).
3. Tighten the inner 12 mm bolts an additional 90 degrees.
4. Tighten the outer 12 mm bolts (crankshaft bearing caps 1
and 5) to 48 lb-ft (65 N.m).
5. Retighten the outer 12 mm bolts (crankshaft bearing caps
1 and 5) to 48 lb-ft (65 N.m).
6. Tighten the outer 12 mm (crankshaft bearing caps 1 and 5)
an additional 90 degrees.
7. Tighten the outer 10 mm bolts (bearing caps 2, 3, and 4) to
30 lb-ft (40 N.m).
CAUTION: DO NOT tighten the outer 10 mm bolts an addi-
tional 90 degrees!
8. Check the crankshaft for proper rotation.
NOTE: If crankshaft does not rotate freely or binds in spots,
problem may be: misaligned main caps, bearing incorrectly in-
stalled, foreign material on bearing or journal, wrong bearing
size.
MAIN BEARING CAP
CRANKSHAFT
SEAL INSTALLER
J–39084
Figure 2-159: Rear Main Seal Installation
#3 MAIN CAP
FEELER GAUGE
Figure 2-158: Measuring Crankshaft End Play
REAR MAIN SEAL INSTALLATION
1. Lubricate new rear main seal lip with chassis grease or
petroleum jelly.
2. Apply sealer such as Permatex #2 to outer circumference
of new seal.
3. Install seal with tool J–39084 (Figure 2-159). Be sure seal
is flush with block and bearing cap as shown
BLOCK
SEAL
MAIN BEARING CAP
BLOCK
SEAT SEAL FLUSH
WITH BLOCK
AND BEARING CAP
CRANKSHAFT
SEAL
®