Hummer H1 Service Manual page 57

_____________________________________________________________________
2-20 Engine
ENGINE BRACKET
INSULATOR
Figure 2-13: Engine Bracket and Insulator
Assembly
Installation
12. Position insulator on engine bracket (Figure 2-13).
13. Install engine bracket and insulator. Tighten engine
bracket-to-block bolts to 30 lb-ft (41 N¥m) torque. Tighten
insulator stud nuts to 90 lb-ft (122 N¥m) torque.
14. Install nut that secures engine bracket to stud on starter
motor (Figure 2-12). Tighten nut to 24 lb-ft (33 N¥m)
torque.
15. Align and install bolts/nuts that attach transmission to
transmission crossmember (Figure 2-11).
16. Connect transmission and transfer case shift rods to floor
shift levers. Use new cotter pins to secure shift rod
trunnions to shift lever arms.
17. Align and install front propeller shaft and center bearing.
Tighten center bearing attaching bolts to 60 lb-ft (81 N¥m)
torque. Tighten U-joint clamp strap nuts to 13-18 lb-ft (18-
24 N¥m) torque.
18. Install starter cable bracket.
19. Connect exhaust pipes, brackets, or hangers if loosened/
removed for service access.
20. Install fan and clutch.
CRANKSHAFT PULLEY
Removal
1. Loosen (but do not remove) crankshaft pulley bolts
(Figure 2-14).
2. Remove serpentine accessory drive belt as follows:
a. Loosen drive belt by rotating belt tensioner in
counterclockwise direction (Figure 2-15). Use 1/2 in.
drive breaker bar to rotate pulley.
b. Slide belt off tensioner and other pulleys. Then re-
move belt.
3. Remove crankshaft pulley bolt and remove pulley.
PULLEY
BOLT (4)
CRANKSHAFT
PULLEY
Figure 2-14: Crankshaft Pulley Mounting
BELT TENSIONER
Figure 2-15: Serpentine Belt Tensioner Location
TORSIONAL
DAMPER
SERPENTINE
BELT
¨