Table of Contents
U L-Series Diesel
Foreword 1
I. Introduction
Application Notes 2
Maintenance Schedule 3
General Family Information 4
II. Engine Component Description
Injection Pumps, Timing 5-8
Valve Train 9
Camshaft 10
Crank, Block, Pistons, Rods 11-14
Head Gasket 15
Cylinder Head 16
Lubrication 17-18
Cooling 19
III. Engine Servicing Procedures
Spill Port Timing 20
Valve Adjustment 21
Injector Service 22-24
Injector Pop-Off Test 25
Injector Leak Test 26
Glow plug Inspection 26
Hot plug Replacement 27
IV. Engine Repair Specifications – 3L 28-31
V. Engine Repair Specifications – 4L 32-35
VI. Component Failure Analysis 36-40
VII. Appendix – Misc. Service Information
Nozzle Troubleshooting Guide 41
Nozzle Performance & Diagnosis 42
Nozzle Holder Tightening Specifications 43-44
Turbo Diagnosis 45
Exhaust Temperature 46
Crankcase Pressure 46
Inlet Manifold Pressure 46
Used Oil Analysis 47
VIII. Isuzu Technology – L-Series Direct Injection 48-49