Master Cylinder Fluid Level Check; Cooling System Fluid Level Check; Serpentine Belt - Hummer H1 Service Manual

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Power Steering Fluid
Check the fluid level in the power steering reservoir monthly
and adjust level as necessary. If fluid is hot, level should be be-
tween ÒHOTÓ and ÒCOLDÓ marks on the cap indicator. If fluid
is cool, level should be between ÒADDÓ and ÒCOLDÓ marks.
In either condition, level must be above ÒADDÓ mark.
NOTE: Power steering fluid does not require periodic replace-
ment.
Figure 1-32: Power Steering Pump Reservoir

Cooling System Fluid Level Check

Check coolant level at the surge tank monthly and adjust level
as necessary. Level should be at, or above, the cold fill line
(Figure 1-33).
SURGE TANK
Figure 1-33: Surge Tank Coolant Level
Indicator Location
05745159
General Information, Lubrication and Maintenance
FILLER CAP
COLD FILL LINE

Master Cylinder Fluid Level Check

CAUTION: Use DOT 3 brake fluid only. Failure to use the
proper fluid may affect brake performance or damage brake
components.
Check master cylinder fluid level monthly. Correct fluid level
is to within 1/2 in. (13 mm) from the ÒMAXÓ indicator.
Clean the master cylinder cap and exterior before checking
fluid level. Dirt on the cap must not be allowed to enter the res-
ervoirs.
Add DOT 3 fluid if necessary and reinstall the cap (Figure 1-34).
MASTER CYLINDER
Figure 1-34: Master Cylinder Cap Location
Wheels/Tires/CTIS
Inspect tire and wheel condition. Look for loose wheel nuts
and rim stud nuts, or dented, deformed wheel rims. Note tire
tread wear and sidewall condition. If the vehicle is used for ex-
tensive off road operation, check the sidewalls for bulges, bead
damage, cuts, fabric breaks.
If the tire treads are worn, note type of wear. If wear is only on
one shoulder, toe setting or camber may be incorrect. If tires
are scalloped or worn at crown only, or both shoulders, infla-
tion pressures are probably incorrect.
If the vehicle is equipped with CTIS, cycle the system and
check operation. Verify tire inflation pressures with an accu-
rate gauge.

Serpentine Belt

Replace the belt if frayed, cut, or torn. Minor, small surface
cracks within the belt grooves are normal. Do not replace the belt
unless cracks extend all the way through or across the belt face.
CAP
MAX FLUID
LEVEL
INDICATOR
1-29