Part of the Isuzu 4JJ1 engine documentation.
This is the factory Isuzu parts catalog for the 4JJ1XZSB02, a turbocharged 4-cylinder common-rail diesel engine. Across 93 pages it breaks the engine down system by system with exploded diagrams and Isuzu part numbers, so you can identify and order the exact component you need.Coverage runs from the engine gasket kit and cylinder head through the cylinder block, camshaft and valve train, turbocharger, fuel injection, cooling, and lubrication, plus the emission piping, starter, generator, wiring harness, and exhaust silencer. Each figure lists reference numbers, part numbers, quantities, and interchangeability marks keyed to the effective machine number, and a How to read this Parts Catalog page explains the marks.This is a clean digital PDF with a text layer, so it is easy to search. Use it to match a worn or failed part to its correct number and confirm which components fit your serial range. It is a parts catalog for identification and ordering, not a step-by-step repair manual.
What's Inside This Isuzu 4JJ1XZSB02 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Fuel Injection System, Fuel Filter and Bracket | |
| Cooling System | Water Pump and Corrosion Resistor, Thermostat and Housing, Fan and Fan Belt, Oil Cooler and Oil Filter | |
| Engine | Engine Gasket Kit, Cylinder Head Cover, Cylinder Head, Cylinder Block, Oil Pan, Camshaft and Valve, Crankshaft, Piston and Flywheel, Timing Gear Case and Flywheel Housing, Engine Mounting, Inlet Manifold, Exhaust Manifold, Water Piping; Engine, Turbocharger System, Oil Pump and Oil Strainer, Oil and Vacuum Piping; Engine, Engine Electrical Control Parts | |
| Electrical System | Starter, Generator, Wiring Harness and Fuse, Fixing Parts; Wiring Harness, Switch and Relay; Instrument Panel, Electrical Control and Other Parts | |
| Hydraulics & 3-Point Hitch | Emission Piping | |
| Other Components | ⑦ Assemblies, Kits, Sets and Their Components, Ventilation System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cylinder Head Gasket Thickness (1-Notch) | 1.05 mm | p. 17 |
| Cylinder Head Gasket Thickness (2-Notch) | 1.10 mm | p. 17 |
| Cylinder Head Gasket Thickness (3-Notch) | T=1.15 mm | p. 17 |
| Glow Plug Voltage | 24V | p. 17 |
| Flywheel Ring Gear Tooth Count | Z=122 | p. 31 |
| Thermostat Opening Temperature | 82°C | p. 45 |
| Cooling Fan Belt Length | L=1007 mm | p. 49 |
| Starter Assembly Rating | 24V 4.0KW | p. 71 |
| Generator Assembly Rating | 24V 50A | p. 71 |
Isuzu 4JJ1XZSB02 Common Problems This Manual Covers
Overheating from cooling system faults
Low coolant or a worn water pump can overheat the 4JJ1 and stress the head gasket. The Water Pump and Corrosion Resistor section identifies the pump assembly and its parts for a correct replacement.
Manual Section: Water Pump and Corrosion Resistor p. 42Turbocharger failure and power loss
The turbo commonly fails after high mileage or poor maintenance, causing power loss, smoke, and a whining noise. The Turbocharger System figure shows every turbo component by part number for ordering.
Manual Section: Turbocharger System p. 50Injector problems cause rough idle
Faulty injectors bring rough idling, misfiring, and black smoke on this common-rail engine. The Fuel Injection System section lists the injectors and rail parts so you replace the correct components.
Manual Section: Fuel Injection System p. 52EGR and emission piping clogging
Carbon buildup and short urban trips clog the EGR and emission system, hurting performance and economy. The Emission Piping section identifies the related pipes and fittings by part number.
Manual Section: Emission Piping p. 66Head gasket failure and overheating
A damaged head gasket causes overheating and coolant loss. The Engine Gasket Kit section lists overhaul gasket sets in graded head-gasket thicknesses so you match the right part number.
Manual Section: Engine Gasket Kit p. 10Slow cranking from a worn starter
A worn starter cranks slowly and can fail to turn the engine over. The Starter section breaks the assembly into component parts so you order only what is worn.
Manual Section: Starter p. 74Frequently Asked Questions
Which engine does this catalog cover?
It covers the Isuzu 4JJ1XZSB02, a turbocharged 4-cylinder common-rail diesel. Every figure and part number is specific to this engine variant and its listed effective machine number.
Is this a repair manual or a parts catalog?
It is a parts catalog. It provides exploded diagrams, reference numbers, and Isuzu part numbers to identify and order components. It does not include repair procedures or torque specifications.
What head gasket thicknesses are available?
The catalog lists cylinder head gasket sets in three thickness grades: 1.05 mm, 1.10 mm, and 1.15 mm, each with its own part number so you match the correct notch grade. p. 17
Does it list the starter and generator ratings?
Yes. The Engine Electrical Control Parts section shows a starter rated 24V 4.0KW and a generator rated 24V 50A, with part numbers for ordering. p. 71
How will I receive this Isuzu 4JJ1XZSB02 Parts Catalog?
A 93-page searchable PDF downloads instantly after checkout. Open it on your laptop, tablet, or phone and bring it right to the shop floor.
Are there any print restrictions on this manual?
No DRM or copy protection. Print the whole manual or just the pages you need with any home or office printer.
Reviews
There are no reviews yet.