Hummer H1 Service Manual page 399

6-16 Wheels and Tires/Central Tire Inflation System (CTIS)
sure using a clip-on air chuck. Do not exceed 50 psi
(345 kPa) cold inflation pressure. Failure to follow
these instructions may result in serious injury or death.
12. Before installing valve core, inflate tire to seat beads. Use
of tire bead seater may be required.
13. Install valve core, inflate tire to recommended tire
pressure and install valve cap.
14. Check for leaks around wheel edges, insert, and air valve
with soapy solution.
15. Balance wheel/tire assembly with 15 oz. maximum
weight. Refer to tire balance procedure in service manual
if necessary.
16. Install wheel/tire assembly on vehicle.
a. Roll wheel/tire assembly to the vehicle.
b. Place the wheel/tire assembly on the geared hub
spindle studs.
c. Start the lug nuts by hand.
d. Snug the lug nuts.
e. Lower the vehicle.
f. Torque the lug nuts evenly and sequentially to 110 lb-
ft (149 N•m) (Figure 6-26).
If the vehicle is equipped with CTIS perform these additional
steps:
g. Lubricate the threads on the CTIS fitting with teflon
pipe sealant.
h. Install the fitting in the geared hub spindle.
i. Engage the quick disconnect fittings on all four
wheels.
17. Install the center cap.
Figure 6-26: Lug Nut Tightening Sequence
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