Removal And Disassembly - Hummer H1 Service Manual

6-2 Wheels and Tires/Central Tire Inflation System (CTIS)
GEARED HUB
SPINDLE
Figure 6-1: Wheel and Tire Assembly
Replacement
Installation
NOTE: The Wrangler GS-A, 37 X 12.50R16.5 LT touring ra-
dial tire has an asymmetrical/directional tread design. The
heavier, stiffer tread on the outside shoulder of the tire must
face outward when being installed. Before installing on a
wheel, inspect sidewall of tire and ensure SIDE FACING
OUTWARDS imprint is facing outward (Figure 6-2).
NOTE: Install lug nuts with fingers to full engagement. If nuts
resist finger tightening examine studs and nuts for damage and
replace if damaged.
1. Position wheel on geared hub spindle according to marks
on mounting studs and attach with lug nuts (Figure 6-1).
Figure 6-2: Side Facing Outwards Location
HOSE
SHIELD
LUG
NUT
WHEEL AND TIRE
ASSEMBLY
2. Remove support and lower corner of vehicle.
3. Two-piece wheel lugnut torque is 110 lb-ft (149 N•m).
Use tightening sequence shown (Figure 6-3).
TIGHTENING SEQUENCE
Figure 6-3: Lug Nut Tightening Sequence
CAUTION: Do not allow pipe thread sealant into air system.
Sealant will damage CTIS components and inhibit the CTIS
operation.
NOTE: Perform steps 4 and 5 for vehicles equipped with
CTIS.
4. Install CTIS quick-connect valve and tube on spindle.
5. Install CTIS hose shield.
TIRE, TWO-PIECE WHEEL, AND RUNFLAT
REPLACEMENT
WARNING: Do not use tire machine. Personal injury
or damage to equipment may result.
CAUTION: It is not recommended mixing one-piece wheel
runflat assemblies and two-piece take-a-part runflat wheel as-
semblies on the same vehicle. Runflat profiles are different be-
tween the two types of wheel assemblies.
CAUTION: Do not mix two piece take-apart wheel compo-
nents from previous model year vehicles with present produc-
tion parts. Many features are not the same between the two
wheel styles and will not fit together correctly. Present produc-
tion wheel halves can be identified by a hole between two of the
wheel half studs on both halves. These holes must be aligned
when assembling the wheel halves.

Removal and Disassembly

1. If the vehicle is equipped with a Central Tire Inflation Sys-
tem (CTIS), perform steps a through d:
a. Release the quick disconnect fitting located in the
center of the geared hub spindle on all four wheels.
b. Remove the hose shield and lay aside.
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