GM 6.2 Liter Diesel Engine (82-93 Chevy GMC C/K Truck) - Service Manual

This is the complete service manual for the General Motors (GM) 6.2 liter diesel engines for 1982 - 1993 Chevy GMC C/K trucks.

This is the same manual that the dealer repair shops use! It contains hundreds of pictures and diagrams containing all the information you need to repair and troubleshoot your engine.

Covers All Years and Serial Numbers - Other websites sell manuals that are incomplete or only cover a specific year of the machine. This manual is guaranteed to be complete and to cover your machine's model year and serial number.

1 General Information and Maintenance
- General Description
- Engine Identification
- LH6 (C) Engine Specifications
  - General Engine Description
  - Technical Engine Specifications
- LL4 (J) Engine Specifications
  - General Engine Description
  - Technical Engine Specifications
  - Torque Specifications
  - Reference Information
- 6.2 Liter Diesel Service Information
  - Operation In Snow (Diesel Engines)
  - Starting the Diesel Engine
  - Emergency “Jump Starting”
  - Diesel Maintenance
  - Engine Oil Additives
  - Diesel Engine Oil Usage
  - Used Lube Oil Analysis Warning Values
2 Engine Systems and Construction
- Engine Design Features
- Cylinder Case
- 6.2L Valve Train
- 1985 and Later Rocker Arm Assembly
- Roller Hydraulic Lifters
- Roller Lifter Wear — Diesel Engines
- Valve Lifter Diagnosis
- Cylinder Head
- Pre-Combustion Chambers
- Broken Glow Plug Tip
- Servicing Cylinder Head and Gasket
- V-8 Diesel Head Gasket Leakage
- V-8 Diesel Head Gasket Installation Checklist
- Leaking Cylinder Head Gasket
- Valve Stem Clearance
- Valve Spring Tension
- Inspection (Timing Chain)
- Valve Guide Bores
- Valve Seats
- Valves
- Valve Stem Oil Seal/OrValve Spring
- Piston Construction (Figure 2-17)
- Piston Selection
- Piston Inspection
- Piston Related Cylinder Case Operations
- Rod and Piston
- Crankshaft
- Crankshaft Rear Main Seal
- Upper Rear Main Seal Repair
- Lower Rear Main Oil Seal Replacement
- Main Bearings
- Connecting Rod Bearings
- Rod Assembly
- Torsional Damper6.2L
- Cam shaft
- Camshaft Bearings
- Flywheel
- Front Cover
- Exhaust Manifolds
- Lubrication System
- Engine and Transmission Oil Cooler Diagnosis, All M odels
- Oil Filler Tube
- Vacuum Pum p
- Cooling System
- Cooling System Diagnosis
- Fan Clutch Diagnosis
- Water Pump
- Radiator
- Cooling System Schematic
- 1985 Cooling System
- Low Coolant Lamp Inoperative
- Low Coolant Lamp “On” All the Tim e
- Base Engine Troubleshooting
3 Charge Air System
- Air Flow To Combustion Cham ber
4 Fuel System
- 4A Low Pressure Fuel Delivery System
  - Fuel System Components
  - Fuel Return System
  - Fuel Recommendations
  - Fuel Tank Com ponents
  - 1982-1983 Water Drain Syphon Valve (Figure 4-5)
  - Diesel Fuel Contam ination
  - Diesel Fuel System Cleaning Procedure
  - Fuel Lines and Lift Pump
  - Mechanical Fuel Pum ps
  - How the Mechanical Fuel Pump Works
  - Fuel Pump Service
  - Mechanical Fuel Pump Tests
  - Avoiding Air Intake
  - Diagnosing Air In Fuel Lines
  - 1982-83 Primary Fuel Filter
  - Line Heater
  - Secondary Fuel Filters
  - Fuel Filter
  - Fuel Flow
  - Water In Fuel
  - Model 80 Fuel FilterSeal Leakage
  - Fuel Filter/Water Separator
  - Modifications To Model 80 Fuel Sentry For DDA (G & P) Applications
  - High Pressure Fuel Delivery System
- 4B High Pressure Fuel Delivery System
  - Fuel Injection Pump
  - Injection Pump Description
  - Injection Pump O peration
  - Injection Pump Rotor
  - Injection Pump Repairs
  - 1982, 1983 and Early 1984 Drive Shafts With a Retaining Clip (Ring)
  - Pressure Testing Of Fuel Injection Pump On the Bench
  - High Altitude Adjustment, 1982 “C-K” True With 6.2L Diesel Engine and LH6 (Light Duty Emissions)
  - High Altitude Adjustment, 1983 and Later “C-K-P-G" Trucks With 6.2L Diesel Engine and LL4 (Heavy Duty) or LH6 (Light Duty) Emissions
  - Static Timing
  - Checking Probe Holder Alignment For Timing Accuracy
  - Checking Or Adjusting Pump Timing (Static)
  - Pump Timing Mark Location and White Smoke At Idle
  - 6.2L Diesel California Engine Timing *C-K With YF5 California Emissions Light Duty 6.2L Diesel
  - Timing Meters
  - Injection Nozzles
  - Nozzle Testing
  - Oscilloscope Pattern, Fuel Injection Pump
  - Cavitation
  - Fast (Cold) Idle Speed System
5 Emission Systems
- 5A General Emission Systems
  - Crankcase Ventilation System
  - Crankcase Depression Regulator, CDR Exhaust Gas Recirculation, EGR
  - EPR/EGR Solenoids
  - Federal EPR/EGR System Operation
  - EGR/EPR Problem Diagnosis
  - LL4 Model — Vacuum Regulator Value (VRV)
  - Throttle Position Switch Adjustment Toe Transmission Vacuum Regulator Valve Adjustment (LL4)
- 5B California (NB2) Diesel Electronic Control System (DECS)
  - 1984-1985 DDAD 6.2L DECS
  - Electronic Vacuum Modulated EGR LH6 6.2L California Diesel
  - 1985 Diagnostic Modes
  - DDC Tool Check 6.2LLH6
  - 1984 Diesel Diagnostic Circuit Check 1985 DECS with On-Vehicle Self
  - Diagnostics
  - 1985 Diagnostic Circuit C heck
  - Electronic Control Module (ECM )

Pages: 380

Years and Serial Numbers: Covers all years and serial numbers

Models: GM 6.2 Liter Diesel Engin

Make: GM

Manual Type: Service Manual

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GM 6.2 Liter Diesel Engine (82-93 Chevy GMC C/K Truck) - Service Manual

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