Part of the Isuzu 6SD1 engine documentation.
This Isuzu AA-6SD1T Service Manual is the factory workshop reference for the AA-6SD1T diesel engine, a turbocharged six-cylinder unit with a 16.8 to 1 compression ratio. It runs 246 pages with a full text layer, so every spec and procedure is searchable and printable.
Coverage runs the whole rebuild: general information and torque data, routine maintenance, three engine chapters for disassembly, inspection and repair, and assembly, then standalone sections for the lubrication, cooling and fuel systems, the turbocharger, and engine electrical. A troubleshooting chapter and a repair standards section with wear limits and clearances round it out.
Whether you are adjusting valve clearance, setting injection nozzle opening pressure, rebuilding the water pump, servicing the turbo, or torquing the cylinder head, the exact values and steps are here. Download instantly and print the pages you need.
What's Inside This Isuzu AA-6SD1T Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 6-26 | General Servicing Precautions, Notes on the Format of This Manual, About Angular Tightening, Main Data and Specifications |
| Maintenance | 27-42 | Lubricating System, Fuel System, Injection Nozzle, Cooling System |
| Engine I (Disassembly) | 43-60 | Disassembly 1, Disassembly 2, Disassembly 3, Cylinder Head Disassembly |
| Engine Ii (Inspection and Repair) | 61-90 | Valve Springs, Rocker Arm Shaft and Rocker Arm, Camshaft, Cylinder Block, Cylinder Liner |
| Engine Iii (Assembly) | 91-122 | Piston and Connecting Rod Assembly, Assembly 1, Assembly 2, Assembly 3 |
| Lubrication System | 123-134 | Introduction, Oil Pump, Oil Filter, Oil Cooler |
| Cooling System | 135-144 | Introduction, Water Pump Disassembly, Water Pump Inspection and Repair, Water Pump Assembly |
| Fuel System | 145-158 | Introduction, Injection Nozzle Disassembly, Reassembly and Opening Pressure Adjustment, Reassembly and Adjustment Procedure |
| Turbocharger | 159-178 | Turbocharger Servicing, Troubleshooting, Construction, Disassembly |
| Engine Electrical | 179-202 | Starter Main Data and Specifications, Starter Disassembly, Starter Inspection and Repair, Starter Reassembly |
| Troubleshooting | 203-224 | Lack of Power, Excessive Fuel Consumption, Excessive Oil Consumption, Overheating |
| Special Tools | 225-228 | Special Tools List |
| Repair Standards | 229-246 | General Rules, Engine Body, Main Operating Parts, Valve System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Injection nozzle opening pressure (1st stage) | 17.7 (180/2570) MPa (kg/cm2/psi) | p. 31 |
| Injection pipe tightening torque (Nozzle holder side) | 28 ~ 31 (2.9 ~ 3.2 / 21 ~ 23) N·m (kgf·m/lb·ft) | p. 118 |
| Delivery valve holder tightening torque | 108 – 118 (11.0 – 12.0 / 80 – 87) N·m (kgf·m/lb·ft) | p. 37 |
| Automatic timer (coupling plate) joint bolt tightening torque | 103 – 113 (10.5 – 11.5 / 76 – 83) N·m (kgf·m/lb·ft) | p. 37 |
| Axial play of shaft & turbine wheel (Standard Clearance) | 0.075 – 0.155 (0.00295 – 0.00610) mm (in) | p. 177 |
| Valve spring free height (Intake side, Inner, Standard) | 62.5 (2.46) mm (in) | p. 67 |
| Cylinder head bolt tightening torque (M14 bolts) | 98 (10/72) N·m -> 142 ~ 152 (14.5 ~ 15.5 / 105 ~ 112) N·m -> 30° ~ 60° | p. 110 |
| Piston ring opening gap (No. 1 compression, Standard) | 0.35 ~ 0.50 (0.0138 ~ 0.0197) mm (in) | p. 78 |
| Cylinder liner projection (Standard) | 0.106 ~ 0.134 (0.0042 ~ 0.0053) mm (in) | p. 73 |
| Regulated voltage (at rated output) | 27 volt | p. 200 |
| Engine Weight | 693 kg | p. 12 |
| Compression Ratio | 16.8 : 1 | p. 12 |
