Table of Contents
Advertisement
Quick Links
Advertisement
Chapters
Table of Contents
Related Manuals for GMC C7H042 1993
Summarization of Contents
GENERAL INFORMATION (SECTION OA)
SPECIAL TOOL ORDERING INFORMATION
Information on ordering special service tools and product numbers available for distribution.
SERVICE PARTS IDENTIFICATION LABEL
Details on the vehicle service parts identification label and its importance for ordering parts.
VEHICLE IDENTIFICATION NUMBER
Explanation of the VIN and its location on different vehicle models (C6H, C7H, P6, B7).
VEHICLE CERTIFICATION LABEL
Information provided by the vehicle certification label, including GVWR, GAWR, and payload rating.
ENGINE IDENTIFICATION NUMBER
Location and identification of engine serial numbers for diesel and gasoline engines.
REAR AXLE IDENTIFICATION NUMBER
How to identify Rockwell and Eaton axles using tags on the differential carrier and axle housing.
TRANSMISSION IDENTIFICATION NUMBER
Location of identification plates for Allison and Eaton-Fuller transmissions.
METRIC FASTENERS
Guidance on identifying and replacing metric fasteners, emphasizing correct nominal diameter, thread pitch, and strength.
FASTENER STRENGTH IDENTIFICATION
Explanation of metric and customary fastener strength classes and identification markings on bolt heads.
PREVAILING TORQUE FASTENERS
Description of prevailing torque nuts and bolts, designed to develop interference between threads.
METRIC-ENGLISH CONVERSION
Reference to a figure for determining metric and English conversions.
DECIMAL AND METRIC EQUIVALENTS
Reference to a figure for determining decimal and metric equivalents.
J1930 WORD CONVERSION
Information on General Motors' adoption of SAE Recommended Practice J1930 for nomenclature.
HR6-HE AIR CONDITIONING COMPRESSOR (SECTION 1D2)
MINOR HR6-HE COMPRESSOR REPAIR PROCEDURES
Operations that can be performed without discharging the system or removing the compressor, focusing on clutch plate and hub.
COMPRESSOR CLUTCH PLATE AND HUB ASSEMBLY
Procedures for removing and installing the compressor clutch plate and hub assembly.
COMPRESSOR CLUTCH ROTOR AND/OR BEARING
Procedures for removing and installing the clutch rotor and bearing assembly.
COMPRESSOR CLUTCH COIL
Procedures for removing and installing the compressor clutch coil.
MAJOR HR6-HE COMPRESSOR REPAIR PROCEDURES
Procedures that require refrigerant recovery, such as shaft seal, control switches, and pressure relief valve replacement.
COMPRESSOR SHAFT SEAL REPLACEMENT
Steps for replacing the compressor shaft seal, including leak detection.
COMPRESSOR PRESSURE RELIEF VALVE
Procedures for removing and installing the compressor pressure relief valve.
CONTROL SWITCHES
Procedures for removing and installing control switches, including leak testing.
COMPRESSOR LEAK TESTING (EXTERNAL AND INTERNAL)
Bench-check procedures for testing compressor leaks and pump-up pressure.
SD-510 HD AIR CONDITIONING COMPRESSOR (SECTION 1D6)
MINOR REPAIR TO THE COMPRESSOR
Procedures for minor repairs to the compressor, focusing on clutch plate and hub assembly replacement.
CLUTCH PLATE AND HUB ASSEMBLY REPLACEMENT
Detailed steps for removing and installing the clutch plate and hub assembly.
PULLEY AND BEARING ASSEMBLY REPLACEMENT
Procedures for removing and installing the pulley and bearing assembly.
CLUTCH COIL AND HOUSING ASSEMBLY REPLACEMENT
Steps for removing and installing the clutch coil and housing assembly.
MAJOR REPAIR TO THE COMPRESSOR
Major repair procedures for the compressor, including shaft seal replacement.
SHAFT SEAL REPLACEMENT
Detailed steps for replacing the shaft seal.
CYLINDER HEAD AND VALVE PLATE REPLACEMENT
Procedures for replacing the cylinder head and valve plate.
SPECIFICATIONS
General specifications for the compressor, including type, rotation, oil, capacity, and air gap.
FASTENER TIGHTENING SPECIFICATIONS
Specific torque values for various fasteners used in compressor assembly.
SPECIAL TOOLS
Listing and illustration of special tools required for compressor overhaul.
POWER STEERING GEAR UNIT REPAIR 3B1A
GEAR DISASSEMBLY
Step-by-step instructions for disassembling the steering gear assembly.
ADJUSTER PLUG
Procedures for disassembling, inspecting, and assembling the adjuster plug.
VALVE AND STUB SHAFT
Procedures for disassembling, inspecting, and assembling the valve and stub shaft components.
PITMAN SHAFT AND SIDE COVER
Inspection procedures for the pitman shaft and side cover.
PRIMARY RACK PISTON
Inspection and assembly procedures for the primary rack piston.
STEERING GEAR CONNECTORS
Procedures for removing and installing steering gear connectors.
PITMAN SHAFT BEARING AND SEAL REPLACEMENT
Steps for disassembling and replacing the pitman shaft bearing and seal.
GEAR REASSEMBLY
Detailed instructions for reassembling the steering gear, including bearing preload adjustment.
SPECIFICATIONS
Specifications for fluid, fastener tightening, and adjustment tightening.
SPECIAL TOOLS
Listing of special tools required for power steering gear unit repair.
STEERING PUMP UNIT REPAIR 3B1B
DRIVE SHAFT, DRIVE SHAFT SEAL, BALL BEARING ASSEMBLY
Procedures for removing, cleaning, inspecting, and installing the drive shaft, seal, and ball bearing assembly.
CONTROL VALVE
Procedures for removing and installing the control valve assembly.
RESERVIOR ASSEMBLY
Procedures for removing and installing the reservoir assembly.
END PLATE, ROTATING GROUP, O-RING SEALS, NEEDLE BEARING ASSEMBLY
Procedures for removing and cleaning the end plate, rotating group, seals, and needle bearing.
SPECIFICATIONS
Fastener tightening specifications for P Series (Heavy Duty) steering pumps.
SPECIAL TOOLS
Listing of special tools for steering pump unit repair.
POWER STEERING COMPONENTS (MIDLAND) 3B2
PUMPS AND SHAFTS
Procedures for removing and disassembling pumps and shafts for pulley type and direct drive pumps.
BUSHING DIRECT DRIVE DESIGN
Removal procedures for components in bushing direct drive designs.
BALL BEARING DIRECT DRIVE DESIGN
Removal procedures for components in ball bearing direct drive designs.
CLEANING, INSPECTION, AND REPAIR
General procedures for cleaning, inspecting, and repairing power steering components.
BEARING REPLACEMENT
Procedures for replacing bearings in the power steering pump.
CARRIER REPLACEMENT
Procedures for removing and replacing the carrier.
POWER STEERING COMPONENTS (TRW ROSS) 3B3
DISASSEMBLY
General disassembly procedures for the TRW Ross power steering gear.
VALVE HOUSING AND INPUT SHAFT ASSEMBLY
Procedures for disassembling and inspecting the valve housing and input shaft assembly.
INSPECTION
Inspection guidelines for various components of the steering gear.
ASSEMBLY
Procedures for assembling the valve housing and input shaft assembly, and general engine oil lubrication.
PITMAN SHAFT AND SIDE COVER
Inspection procedures for the pitman shaft and side cover.
PRIMARY RACK PISTON
Inspection and assembly procedures for the primary rack piston.
GEAR SERVICE ADJUSTMENTS
Procedures for adjusting the starter motor and checking the pinion clearance.
SPECIFICATIONS
Fastener tightening specifications for TRW Ross power steering components.
SPECIAL TOOLS
Listing of special tools required for power steering gear repair.
POWER STEERING COMPONENTS (LuK LF 93) 3B4
DISASSEMBLY
General disassembly procedures for the LuK LF 93 series power steering pump.
CLEANING AND INSPECTION
Procedures for cleaning and inspecting all removed parts.
ASSEMBLY
Procedures for assembling the power steering pump, including lubrication and tightening specifications.
SPECIFICATIONS
Fastener tightening specifications for the LuK LF 93 power steering pump.
SPECIAL TOOLS
Listing of special tools required for steering pump unit repair.
REAR AXLE CONTROLS 4B2
TWO-SPEED AXLE ELECTRIC SHIFT UNIT
General description and unit repair procedures for the electric shift unit.
UNIT REPAIR
Procedures for disassembling, cleaning, inspecting, and assembling the starter motor.
DISASSEMBLY
Step-by-step instructions for disassembling the electric shift unit.
ASSEMBLY
Procedures for assembling the electric shift unit, including lubrication and tightening.
GENERAL DESCRIPTION
General description of the two-speed axle air shift unit.
SPECIFICATIONS
Fastener tightening specifications for rear axle controls.
BRAKES 5A
Master Cylinder
General description and unit repair procedures for the Bendix tandem master cylinder.
Bench Bleeding
Procedure for bench bleeding the master cylinder to remove air before vehicle installation.
SPECIFICATIONS
Fastener tightening specifications for reservoir bolts.
HYDRAULIC BOOSTER 5D2
BOOSTER ASSEMBLY
Procedures for removing or disconnecting the hydraulic booster assembly.
GAGING PROCEDURE
Procedure for checking the piston rod extension after booster rebuilding.
SPECIFICATIONS
Specifications for the hydraulic booster and electro-hydraulic pump.
SPECIAL TOOLS
Listing of special tools for hydraulic booster service.
AIR BRAKE VALVES 5H
CR BRAKEMASTER
Procedures for removing, cleaning, inspecting, and installing the CR Brakemaster air dryer.
BENDIX AD-9
Procedures for removing, installing, and testing the Bendix AD-9 air brake valve.
BENDIX PP-7
Procedures for removing, inspecting, and installing the Bendix PP-7 air supply valve.
BENDIX PP-8
Procedures for removing, inspecting, and installing the Bendix PP-8 air supply valve.
DUAL APPLICATION VALVE BENDIX E-6
Procedures for removing, cleaning, inspecting, and installing the Bendix E-6 dual application valve.
BENDIX DC-4 DOUBLE CHECK VALVE
Procedures for removing, cleaning, and installing the Bendix DC-4 double check valve.
MOISTURE EJECTOR VALVE BENDIX DV-2
Procedures for removing, cleaning, and installing the Bendix DV-2 moisture ejector valve.
PRESSURE PROTECTION VALVE BENDIX PR-2
Procedures for removing, cleaning, inspecting, and installing the Bendix PR-2 pressure protection valve.
QUICK RELEASE VALVE BENDIX QR-N
Procedures for removing, cleaning, and installing the Bendix QR-N quick release valve.
RELAY VALVES BENDIX R-14
Procedures for removing, cleaning, inspecting, and installing the Bendix R-14 relay valve.
BENDIX PROPORTIONING RELAY VALVE BP-R1
Procedures for removing, cleaning, inspecting, and installing the Bendix BP-R1 proportioning relay valve.
SAFETY VALVE BENDIX ST-3
Procedures for removing, cleaning, and installing the Bendix ST-3 safety valve.
SPRING BRAKE CONTROL VALVE BENDIX SR-1
Procedures for removing, cleaning, and installing the Bendix SR-1 spring brake control valve.
TRAILER BRAKE HAND CONTROL VALVES BENDIX TC-2
Procedures for removing, cleaning, inspecting, and installing the Bendix TC-2 trailer brake hand control valve.
TWO-WAY CONTROL VALVE BENDIX TW-1
Procedures for removing, cleaning, and installing the Bendix TW-1 two-way control valve.
SPECIFICATIONS
Fastener tightening specifications for various air brake valves.
AIR FOUNDATION BRAKES 5I
AUTOMATIC SLACK ADJUSTER
Procedures for removing, cleaning, inspecting, and installing the Rockwell automatic slack adjuster.
MANUAL SLACK ADJUSTER
Procedures for removing, inspecting, and installing the Midland manual slack adjuster.
SERVICE BRAKE CHAMBERS
Procedures for removing and installing Anchorlok standard service brake chambers.
SPRING BRAKE CHAMBERS
Procedures for caging and installing Anchorlok Gold Seal spring brake chambers.
SPECIFICATIONS
Fastener tightening specifications for brake chamber clamp nuts.
AIR COMPRESSOR AND GOVERNOR 5J
Bendix Tu-Flo 550 Air Compressor Disassembly
Procedures for disassembling the Bendix Tu-Flo 550 air compressor, including governor and cylinder head.
BENDIX TU-FLO 550 CLEANING, INSPECTION, AND REPAIR
Cleaning and inspection procedures for the Bendix Tu-Flo 550 air compressor components.
PISTONS AND CONNECTING RODS
Procedures for measuring, selecting, and assembling pistons and connecting rods.
REPAIR
Repair procedures for discharge valves, valve stops, and seats, and inlet valves and seats.
BENDIX BX-2150 AIR COMPRESSOR ASSEMBLY
Procedures for assembling the Bendix BX-2150 air compressor, including crankshaft, connecting rod, and cylinder head.
CRANKSHAFT
Procedures for removing and installing the crankshaft and its associated components.
CONNECTING ROD
Procedures for removing the connecting rod and its cap, including important notes on matching.
SPECIAL TOOLS
Listing of special tools required for air compressor and governor service.
ENGINE ELECTRICAL 6D
21-SI 200 GENERATOR
General description, operating principles, diagnosis, and output testing for the Delco Remy 21-SI 200 Generator.
CS-144 GENERATOR
General description and operating principles for the Delco Remy CS-144 Generator.
SD STARTER MOTORS
General description of Delco Remy SD-260 and SD-300 starter motors, including tests and disassembly.
37-MT STARTER MOTORS
General description of Delco Remy 37-MT starter motors, including general information and diagnostics.
DISTRIBUTORS
General description of Delco Remy distributors, ignition coil, and control module.
DELCO REMY SD AND SD-300 STARTER MOTORS
GENERAL DESCRIPTION
Overview of Delco Remy SD-260 and SD-300 starter motors.
STARTER MOTOR TESTS
Procedures for testing starter motors, including no-load tests and diagnosis.
NO LOAD TEST
Steps for performing a no-load test on a starter motor.
DISASSEMBLY OF THE SD-300 STARTER MOTOR
Procedures for disassembling the SD-300 starter motor.
FIELD FRAME
Procedures for disassembling the starter motor's field frame.
DRIVE END
Procedures for disassembling the drive end components of the starter motor.
SOLENOID
Procedures for disassembling the starter motor solenoid.
BRUSHES
Procedures for disassembling and replacing brushes.
INSPECTION AND REPAIR
General inspection and repair procedures for starter motor components.
DISASSEMBLY OF THE SD-260 STARTER MOTOR
Procedures for disassembling the SD-260 starter motor.
SOLENOID
Procedures for disassembling the starter motor solenoid.
FRAME AND FIELD ASSEMBLY
Procedures for disassembling the frame and field assembly.
DRIVE END FRAME ASSEMBLY
Procedures for disassembling the drive end frame assembly.
PINION CLEARANCE CHECK
Procedure for checking pinion clearance after starter motor reassembly.
SPECIFICATIONS
Specifications for starter motor tests and fastener tightening.
SOLENOID SWITCH
Specifications for solenoid switch pull-in and hold-in performance.
FASTENER TIGHTENING
Fastener tightening specifications for 37-MT starter motors.
37-MT STARTER MOTORS 6D4
GENERAL DESCRIPTION
Overview of Delco Remy 37-MT starter motors, including design features and lubrication.
ADJUSTABLE DRIVE HOUSING
Instructions for adjusting the drive housing.
IDENTIFICATION
Information on identifying starter motor build dates and part numbers.
DIAGNOSIS OF THE STARTER MOTOR
Procedures for diagnosing starter motor issues, including tests and checks.
STARTER MOTOR TESTS
General starter motor tests to be performed before disassembly.
THERMOSTAT CHECK (OVERCRANK PROTECTION)
Procedure for checking the thermostat for overcrank protection.
NO LOAD TEST
Steps for performing a no-load test on the starter motor.
DISASSEMBLY
Procedures for disassembling the starter motor.
FIELD FRAME
Procedures for disassembling the starter motor's field frame.
LEVER HOUSING
Procedures for disassembling the lever housing.
SOLENOID BOOT
Procedures for disassembling the solenoid boot.
SOLENOID
Procedures for disassembling the starter motor solenoid.
INSPECTION AND REPAIR
General inspection and repair procedures for starter motor components.
ASSEMBLY
Procedures for assembling the starter motor, including solenoid, brushes, and housing.
PINION CLEARANCE CHECK
Procedure for checking pinion clearance after starter motor reassembly.
SPECIFICATIONS
Specifications for starter motor tests and fastener tightening.
SOLENOID SWITCH
Specifications for solenoid switch pull-in and hold-in performance.
FASTENER TIGHTENING
Fastener tightening specifications for 37-MT starter motors.
DELCO REMY DISTRIBUTORS
GENERAL DESCRIPTION
Overview of Delco Remy distributors, including ignition coil and control module.
IGNITION COIL
Description of the ignition coil and its function.
IGNITION CONTROL MODULE
Description of the ignition control module and its role in spark timing.
POLE PIECE AND COIL ASSEMBLY
Description of the pole piece and coil assembly within the distributor.
DISASSEMBLY
Step-by-step procedures for disassembling the distributor.
INSPECTION AND ELECTRICAL TESTS
Procedures for inspecting distributor components and performing electrical tests.
SPECIAL TOOL
Listing of special tools required for distributor service.
Need help?
Do you have a question about the C7H042 1993 and is the answer not in the manual?
Questions and answers