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The Hummer Knowledge Base
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Engine:
Air Intake
Filters
Inexpensive Alternatives
"Vacuator" or "Flap" Valve
Block
Block Heaters
CDR Valve
Testing
Cooling System
Coolant Temp Level
- Turbodiesels
Cooling Fan
Cooling System Care
-
From the U.S. Army. Requires
Adobe Reader (Acrobat)
Flushing
Radiators
Testing for Air Leaks
Thermal Cycling and Coolant Leaks
Turbodiesels Run Hotter
Water Pump Replacement on 6.2L Diesel
Cylinder Heads
Cracking
Head Gasket Replacement
Diagnostics
Scan Tool
Diesel Engines
6.2L Diesel Engine Rebuild
Diagnostic Parameters
- 5.7L, 6.2L and 6.5L - Requires
Adobe Reader (Acrobat)
The Diesel Page
- Recommended reading for 6.2L and 6.5L Diesel engine information.
Glowplugs
Cold-Starting Modifications
Controller
Fusible Links - Description
Fusible Links - Testing
GM Glowplug Components
Removing Swollen Glow Plugs
Replacement
Rusted Plug Removal
Starting Modifications
- "Wait to Start" Relay Mods and Glowplug Delay. By Allan Madar and Jeff Staud
Testing the Glow Plugs
Troubleshooting the Glow Plug System
Types of Glow Plugs
Ignition Timing
"Wait" Light
Emergency Fuel Shutoff Procedure
- If the engine doesn't stop running when turned off
"Engine Braking"
Engine Part Numbers
Engine Rebuilding or Replacement
Swapping for a Duramax, Cummins, Big Block Gas or Any Other Engine
Tips for Rebuilding
To a Cummins 5.9L
Exhaust
Borla Exhaust
Modifications
Fan
Checking Fan Clutch
Fan Clutch Replacement
- by Allan Madar
Fan Removal Without Removing Radiator Stack
HMMWV Engine Fan diagnostics
How the Fan Clutch Works
General Engine Products Inc. Engine Support Documents
- From AM General, click on "Enter as Guest" below the log-in form
Injector Pumps
HMMWV Injector Pumps
How the Stanadyne DB2 Fuel Injection Pump Works
Main Bearing Seal
6.2L Main Bearing Seal Replacement
- A Microsoft Word document
6.2L Main Bearing Seal Replacement
- A PDF document
Maintenance
- See
Parts/Service/Maintenance
Oil/Lubrication
Analysis
Dual Oil Filters
General Information About Oil
Ninety-Degree (90°) Oil Filter Adapter
Kit from SSDiesel Supply
Individual Parts Needed for DIY
Oil Leaks - Tracking Them Down
Oil Types for Diesel, Gas
PreLub Plus Install
Synthetic Lubricants
Do you Need Synthetic Motor Oil?
Starting Fluid -
Don't Use It on a Diesel!
Starting Problems
Crank Sensor
Starting a HMMWV
Starting When Hot
- Diesel
Swapping Engines
To a Cummins 5.9L
Throttle Position Sensor (TPS)
Adjusting
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