2011-2013 Isuzu Q Series / QKR 4JB1 Diesel Engine Workshop Service Manual
Technical reference for the Isuzu Q Series and QKR 4JB1 Diesel Engine models. Covers engine mechanical procedures, troubleshooting, and specifications. PN 4JB1/4JB1-TC
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Sample pages from the 2011-2013 Isuzu Q Series / QKR 4JB1 Diesel Engine Workshop Service Manual manual
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Isuzu Models Covered & Key Technical Specifications
Models: Isuzu Q Series, QKR
Sub-models / Variants: 4JB1 Diesel, 4JB1-TC Diesel, Left Hand Drive, Right Hand Drive
Build Years: 2011–2013
Technical Data:
- Engine model: 4JB1 / 4JB1-TC
- Engine type: Four-cycle, overhead valve, water-cooled diesel
- Combustion type: Direct injection
- Displacement: 2,771 cm3 (169.0 in3)
- Compression ratio: 18.2 (4JB1), 18.1 (4JB1-TC)
- Compression pressure: 3,038 kPa (441 psi)
- Fuel injection order: 1–3–4–2
- Idling speed: 750–790 r/min
- Valve clearance (cold): Intake/Exhaust 0.40 mm (0.016 in)
- Valve clearance (hot): Intake/Exhaust 0.45 mm (0.018 in)
- Oil capacity (including filter): 6.6–7.1 liters
- Starting system voltage: 12 V
- Starter output: 2.0 kW
Isuzu Manual Features & Content Preview
Technical Scope for the 2011–2013 Isuzu Q Series Engine Manual
- Covers the 2011–2013 Isuzu Q Series and QKR light-duty trucks equipped with the 4JB1 and 4JB1-TC diesel engines
- Official OEM publication P/N LNW6ALF000701, dated 2011 for the model year release
- Contains 100 pages of mechanical specifications, torque settings, system identification, and component disassembly sequences
- Downloads to your account within seconds of checkout
- Your order stays downloadable from your account for life
- Indexed PDF search covers every chapter and appendix
- OCR text layer lets you jump to a torque spec by keyword
- This 2011 technical reference is the factory-authorized manual for engine-specific mechanical service on 4JB1-series powertrains
Engine Service Documentation
This 2011–2013 Isuzu Q Series publication provides technical procedures for the 4JB1 and 4JB1-TC diesel engines, including cylinder head, valve train, camshaft, oil pump, crankshaft, and piston assemblies. The text details inspection criteria, service limits, and component tolerances for all critical internal engine parts. Users can reference clear component breakdowns and maintenance sections for lubrication, fuel filtering, and cooling system requirements.
Precision Data and Torque Values
Technical sections provide comprehensive lists of fastening norms, including flywheel attachment at 296 N-m and timing gear housing bolts at 64 N-m. Valve clearance for the intake is listed at 0.40 mm in the cylinder head specification table. Cylinder head bolt torque values are documented in a multi-stage sequence. The 2011–2013 Isuzu Q Series manual documents oil pump operating pressures between 559 and 618 kPa for the filter relief valve.
Reference only — always consult a certified technician before performing service on this equipment.
This official Isuzu 4JB1 engine workshop manual is the primary reference for the 2011–2013 Q Series trucks, documenting engine, cooling, fuel, and lubrication specifications for the 4JB1 and 4JB1-TC engine variants.
Document Reference: Publication LNW6ALF000701, 2011MY Edition
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