Hummer H1 (2006+). Manual — part 22

1-40

General Information, Lubrication and Maintenance

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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 compo-
nents.

Check master cylinder fluid level monthly. Correct fluid level is to within 1/2 in. (13 mm) from the “MAX” indicator.

Clean the master cylinder cap and exterior before checking fluid level. Dirt on the cap must not be allowed to enter the reservoirs.

Add DOT 3 fluid if necessary and reinstall the cap (Figure-1-37).

Figure 1-37: 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 extensive 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, inflation pressures are probably incorrect.

If the vehicle is equipped with CTIS, cycle the system and check operation. Verify tire inflation pressures with an accurate 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 un-
less cracks extend all the way through or across the belt face.

Body Lubrication Points

Every 6 months or 6,000 mi (9,700 km), whichever occurs first, lubricate the: hood hinge, hood stops, tailgate hinges, door hinges,
door handles, parking brake lever and service brake pedal push rod stud (Figure-1-38). Suggested lubricants include engine oil or
ATF for hinges; LPS silicone lube for linkages, handles, and brake push rod; white grease for seat tracks, window regulators and
park brake lever. Door locks should use a graphite based lubricant such as Lock-Eze. Refer to the Recommended Fuel/Fluids/Lu-
bricants/Capacities section for more detailed lube information.

MASTER CYLINDER

CAP

MAX FLUID

LEVEL

INDICATOR

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General Information, Lubrication and Maintenance 1-41

5745804

Figure 1-38: Body Lubrication Points

ESSENTIAL TOOLS

NOTE: See page 1-1 of the 2006 Service Parts Catalog for information on ordering Kent-Moore tools.

Engine

Tool No.

Description

EN-47913

Wrench, Belt Tensioner

J–23523-F

Harmonic Balancer Remover/Installer Set

J–23951

Water Manometer

J–26999-10

Compression Gauge Adapter

J–26999-20

Adapter, Compression Gauge

J–26999-30

Compression Gauge Adapter

J–34826

Socket, 36mm 12 Point

J–42000-EU

Digital Battery Tester

J–44640

Installer, Valve Stem Seal

J–44641

Remover, Rear Crankshaft Seal

J–44642

Installer, Rear Crankshaft Seal

J–44643

Flywheel Holder

J–44644

Remover, Front Crankshaft Seal

J–44645

Installer, Front Crankshaft Seal

J–44646

Compressor, Valve Spring (On-Vehicle)

J–44648-A

Storage Case - Duramax 6.6L Tools

J-45059

Angle Meter

J–46594

Tool, Injector Removal

DOOR

TRANSFER CASE

DOOR

DOOR

TAILGATE

DOOR

TRANSMISSION

SEAT

PARKING BRAKE

SERVICE BRAKE PEDAL

HOOD

SHIFT LINKAGE

SHIFT LINKAGE

PUSH ROD STUD

LEVER

HINGE

HINGE

HANDLE

TRACKS

HINGE

LOCKS

HINGE

CENTER
HOOD
STOP

HOOD
STOP

(GREASE)

HOOD
STOP
(GREASE)

(GREASE)

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General Information, Lubrication and Maintenance

________________

Fuel, Emissions and Exhaust

Transmission/Transfer Case

Tool No.

Description

EN–47589

Test Adapter, Fuel Pressure

J–28552-A

Gauge, Fuel Pressure

J–28552-100

Fuel Pressure/Return Adapter Set

J–29658-D

Fuel Pressure Gauge & Adapter Set

J–29698-A

Injection Line (flare nut) Wrench, 3/4

J–38641-B

Hydrometer, Diesel Fuel

J–44638

Gauge, Vacuum/Pressure

J–45773

Adapters, Fuel Pressure Gauge

J–45873

Test Kit, Fuel Return Volume

J–45873-30

Test Adapters, Fuel Return Volumn

Tool No.

Description

DT–47502

Front Output Seal Installer

J–21366

Torque Converter Retaining Strap

J–25025-B

Oil Pump and Valve Body Pin Set

J–33831-A

Input Gear Seal Installer

J–33835

Pump Housing Seal Installer

J–39700

Break-Out Box

J–41364-A

NSBU Switch Aligner

J–41623-B

Trans Oil Cooler Line Disconnect Tool

J–42497

Extension Housing Seal Installer

J–42543

Selector Shaft Seal Remover/Installer

J–43773

Valve Spring Compressor

J–43799

Break-Out Box Adapter

J–43909

Selector Shaft Seal Installer

J–43911

Selector Shaft Seal Remover

J–44152

Jumper Harness (20 pins)

J–44247

Internal Wiring Harness Installer

J–44257

Wiring Harness Connector Remover

J–44835

Allison Transmission Oil Cooler Flush Adapters

J–44924-A

Storage Case - Allison LCT Tools

J–45053

Pump Remover

J–45056

Oil Pressure Adapter

J–45096

TransFlow Transmission Cooling System Service Tool

J–45096-500

Oil Flush Kit Adapters

J–46409

Torque Converter Alignment Handles

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General Information, Lubrication and Maintenance 1-43

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Wheels, Tires and CTIS

Brakes

Steering

Axles/Suspension and Frame

Tool No.

Description

CH–47503

Runflat Tire Pry Bar

J–39522

ENG Kit, Socket (5-Point)

J–42452

Runflat Compressor

J–42557

Socket, Cam

J–45760

Rim Separating Jack-Screws

J–45769

Runflat Ratchet Wrench

J–45770

Hutchinson Rim Separator

Tool No.

Description

J–35592

ABS Pinout Box

J–42553

Disc Brake Piston Retraction Tool

J–42883

Wheel Speed Sensor Test Cable

J–44237

ABS Blink Code Jumper

J–44238

Master Cylinder Bleed Adapter

J–45405

Brake Line Flaring Kit

J–45761

T-Handle Rachet Wrench (9/16")

Tool No.

Description

J–33141

Adapter Fittings (used with J–25323)

J–42548

Puller, Pitman Arm

J–44721

Power Steering System Analyzer

J–8092

Universal Driver Handle

Tool No.

Description

CH–47505

Shock Mounting Pin Socket

DT–47845

Installer, Input Seal

DT–47846

Installer, Spindle Seal

J–08614-A

Pinion Flange Holder

J–08614-5

Bolt Kit Yoke Holding Tool

J–22610

Axle Boot Pliers, Eared Clamp

J–24398-A

Driveshaft Inclinometer

J–35566

Clamp Tool, Axle Boot

J–35910

Axle Boot Crimping Tool

J–38792-A

Electronic Vibration Analyzer (EVA) 2

J–38869

Installer, Pinion Seal

J–42183

Handle, Seal Driver

J–42546

1/4 in. Drive Torque Wrench (Preset)

J–42547

1/2 in. Drive Torque Wrench (Preset)

J–43218

Clamp Plier

J–45762

T-Handle Rachet Wrench (15mm)

J–8092

Universal Driver Handle

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