Isuzu engine 4j series. Service manual - part 64

6B - 16  ENGINE COOLING

TENSION ADJUSTMENT

1. Cooling Fan Pulley Belt

•

With AC Generator mounting and lock bolts loose,
adjust belt tension with adjuster's adjust bolt.
Tighten bolt to the specified torque

Generator Fixing Bolt Torque

N∙m (Kg∙m/lb∙ft)

                                                                                                                  

40 (4.1/30)

                                                                                                                  

Adjust Plate Fixing Bolt Torque

N∙m (Kg∙m/lb∙ft)

                                                                                                                  

19 (1.9/14)

                                                                                                                  

2. P/S Oil Pump and A/C Compressor Pulley Belt

•

With P/S pump lock bolt loose, adjust belt tension with
adjust belt.
Tighten lock nut to the specified torque.

Lock Nut Torque

N∙m (Kg∙m/lb∙ft)

                                                                                                                  

27 (2.8/20)

                                                                                                                  

ENGINE FUEL  6C - 1

SECTION 6C

ENGINE FUEL

CONTENTS

PAGE

General Description....................................................................................................... 6C -

2

On-Vehicle Service ........................................................................................................ 6C -

7

Fuel Filter Assembly.................................................................................................. 6C -

7

Fuel Filter Cartrige..................................................................................................... 6C -

8

Injection nozzle.......................................................................................................... 6C -

9

Injection Pump Assembly (Gear Drive Type) .......................................................... 6C - 26

Injection Pump Assembly (Belt Drive Type)............................................................ 6C - 31

Injection Timing Adjustment..................................................................................... 6C - 41

Adjustment of Idling Speed ...................................................................................... 6C - 42

Injection Pump Data .................................................................................................. 6C - 43

Injection Volume and Governor Performance Diagram ......................................... 6C - 45

Fuel Tank.................................................................................................................... 6C  - 55

Fuel Gauge Unit ......................................................................................................... 6C - 57

Accelerator Control ....................................................................................................... 6C - 58

Accelerator Control Cable ........................................................................................ 6C - 58

Accelerator Pedal ...................................................................................................... 6C - 60

Idling Control Cable .................................................................................................. 6C - 62

Air Cleaner Element .................................................................................................. 6C - 64

HOME

6C - 2  ENGINE FUEL

GENERAL DESCRIPTION

When working on the fuel system, there are
several things to keep in mind:
•

Any time the fuel system is being worked on,
disconnect the negative battery cable except
for those tests where battery voltage is
required.

•

Always keep a dry chemical (Class B) fire
extinguisher near the work area.

•

Replace all pipes with the same pipe and
fittings that were removed.

Clean and inspect "O" rings.  Replace where
required.

•

Always relieve the line pressure before
servicing any fuel system components.

•

Do not attempt repairs on the fuel system until
you have read the instructions and checked
the pictures relating to that repairs.

ENGINE FUEL  6C - 3

FUEL FLOW

The fuel system consists of the fuel tank, the water
separator, the fuel filter, the injection pump, and the
injection nozzle.
The fuel from the fuel tank passes through the water
separator and the fuel filter where water particles and
other foreign material are removed from the fuel.

Fuel, fed by the injection pump plunger, is delivered to
the injection nozzle in the measured volume at the
optimum timing for efficient engine operation.

6C-2-1.tif