Hummer H1 (2006+). Manual — part 21
1-36
General Information, Lubrication and Maintenance
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Figure 1-28: Coupler Shaft Grease Points
Universal and Slip Joint Lubrication
Lubricate U-joints with a multipurpose, NLGI-LB grade chassis grease.
Lubricate propeller shaft universal and slip joints every 6,000 mi (9,700 km), or semiannually, whichever occurs first. Use a hand
operated or low-pressure air powered lubrication gun. If operating conditions are severe service at 1,000 mi. (1,600 km) intervals.
The rear propeller shaft U-joints have two grease fitting locations (Figure-1-29). The front shaft has four fitting locations (Figure-1-30)
Figure 1-29: Propeller Shaft Lube Points
GREASE
ZERKS
GREASE
ZERKS
U-JOINT LUBE FITTINGS
12-1-05
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General Information, Lubrication and Maintenance 1-37
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Figure 1-30: Front Propeller Shaft Lube Points
Steering and Suspension Lubrication Points
Lubricate steering and suspension components every 6,000 mi. (9 700 km), or semiannually, whichever occurs first. If operating
conditions are severe, service at 1,000 mi. (1 600 km) intervals.
Figure 1-31: Ball Joint/Radius Rod Lube Points
Suspension lube points include the upper and lower ball joints and the rear suspension radius rods (Figure-1-31). Steering lube
points include the tie rod ends, idler arm, steering arm, and intermediate steering shaft ( Figure 1-32 through Figure 1-34).
Use a hand operated or low pressure air powered lube gun filled with a multipurpose chassis grease. NLGI-LB classification lubri-
cating grease is recommended.
LUBE FITTING
LOCATION
LUBE FITTING
LOCATION
RADIUS ROD
LUBE FITTING
UPPER BALL
JOINT FITTING
LOWER BALL
JOINT FITTING
11-1-05
1-38
General Information, Lubrication and Maintenance
________________
Figure 1-32: Idler Arm and Tie Rod Lube Points
Figure 1-33: Tie Rod and Steering Arm Lube Points
Figure 1-34: Intermediate Steering Shaft Lube Points
IDLER ARM
FITTINGS
TIE ROD END
FITTING (2)
STEERING ARM FITTING
TIE ROD END FITTINGS
LUBE FITTINGS
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General Information, Lubrication and Maintenance 1-39
5745804
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 between
“HOT” and “COLD” marks on the cap indicator. If fluid is cool, level should be between “ADD” and “COLD” marks. In either
condition, level must be above “ADD” mark.
NOTE: Power steering fluid does not require periodic replacement.
Figure 1-35: 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-
1-36).
Figure 1-36: Surge Tank Coolant Level Indicator Location
POWER STEERING
PUMP RESERVOIR
FILLER CAP
SURGE TANK
COLD FILL LINE
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