Section 6A · Pages 353–374 (22 pages)
General Engine Mechanical
From the 1990 GMC Light Duty Truck Unit Repair Manual
Opening of the engine section, with its contents, then general engine mechanical procedures common to all engines: cylinder bore measurement, piston and connecting rod assemblies and piston selection, measuring piston pin fit, camshaft bearings, cylinder head and sealing surfaces, and cleaning and inspection.
Read this section free, starting at page 353What this section covers
- Engine section contents
- Cylinder bore
- Pistons and piston selection
- Piston pin fit
- Camshaft bearings
- Cylinder head
- Year
- 1990
- Make
- GMC
- Vehicle
- C/K Trucks, G Vans, Light Duty Trucks, M Vans (Astro/Safari), P Forward Control, R/V Trucks, S/T Trucks, Trucks
- Publication
- X-9037
- Pages
- 1,052
What’s inside
Unit repair manual
- 0AGeneral Informationpp. 7–20
- 1B1A-6 Air Conditioning Compressorpp. 21–44
- 1B2V5 Air Conditioning Compressorpp. 45–58
- 1B3R-4 Air Conditioning Compressorpp. 59–76
- 1B4HR-6 Air Conditioning Compressorpp. 77–94
- 1B5SD-709 Air Conditioning Compressorpp. 95–102
- 3B2Manual Steering Gearpp. 103–114
- 3B3Power Steeringpp. 115–134
- 4B17 1/2- and 7 5/8-Inch Ring Gear Rear Axlespp. 135–146
- 4B28 1/2-Inch Ring Gear Rear Axlepp. 147–160
- 4B39 1/2-Inch Ring Gear Rear Axlepp. 161–174
- 4B410 1/2-Inch Ring Gear Rear Axlepp. 175–186
- 4B5Dana Rear Axlespp. 187–216
- 4B612-Inch Ring Gear (Rockwell) Rear Axlepp. 217–228
- 4B7Locking Differentialpp. 229–238
- 4C18 1/2-Inch Ring Gear Front Axlepp. 239–252
- 4C29 3/4-Inch Ring Gear (Dana) Front Axlepp. 253–268
- 4C3T Truck Front Axlepp. 269–286
- 4C4K Truck Front Axlepp. 287–316
- 4C5L Van Front Axlepp. 317–336
- 5Brakespp. 337–352
- 6AGeneral Engine Mechanicalpp. 353–374
- 6A12.5 Liter L4 Enginepp. 375–410
- 6A22.8 Liter V6 Enginepp. 411–442
- 6A34.3 Liter V6 Enginepp. 443–472
- 6A44.8 Liter L6 Enginepp. 473–508
- 6A5V8 Engine (5.0, 5.7 and 7.4 Liter)pp. 509–554
- 6A76.2 Liter Diesel Enginepp. 555–594
- 6C1Model 1MEF Carburetorpp. 595–616
- 6C2Model M4MEF Carburetorpp. 617–642
- 6C3Model 220 Throttle Bodypp. 643–650
- 6C4Model 700 Throttle Bodypp. 651–658
- 6D1Series Generatorspp. 659–670
- 6D2CS-144 Generatorpp. 671–678
- 6D3SD Starting Motorspp. 679–690
- 6D4PG-200 (PMGR) Starting Motorpp. 691–698
- 6D5Distributorspp. 699–712
- 7AHydra-matic 4L60 Automatic Transmissionpp. 713–792
- 7AHydra-matic 3L80/3L80-HD Automatic Transmissionpp. 793–848
- 7AHydra-matic 3L30 Automatic Transmissionpp. 849–890
- 7B1Hydra-matic 5LM60 Manual Transmissionpp. 891–938
- 7B2HM-117 Manual Transmissionpp. 939–958
- 7B3New Process Transmissionpp. 959–970
- 7B4Borg Warner Transmissionspp. 971–986
- 7D1New Process 205 Transfer Casepp. 987–998
- 7D2New Process 241 Transfer Casepp. 999–1012
- 7D3New Process 231 Transfer Casepp. 1013–1024
- 7D4Borg-Warner 1370 Transfer Casepp. 1025–1040
- 7D5Borg-Warner 4472 Transfer Casepp. 1041–1052







