Isuzu KB P190. Manual - part 245

6C – 16   FUEL SYSTEM 

FILLER NECK 

 

Removal 

1.  Remove the fuel tank. 

NOTE: Refer to "Fuel Tank" in this section. 

2.  Put a marking the following point as the filler neck assembly 

is restored. 
•  Each joint area of the hose (to restore axial direction and

insertion length of the hose) 

•  Each fasten area of the clamp (to restore axial direction

and position of the clamp) 

•  Each bolt in the clamp (to restore fasten length of bolt in 

the clamp) 

•  The band clip (to restore position and fasten length of

the band clip) 

NOTE: Cover end of each hose and pipe to prevent any dust 
entering. 
 

 

 
 
 
 
 
 
 
 

Installation 

1.  Align each marking and restore the following point. 

•  Each joint area of the hose (Restore axial direction and

insertion length of the hose) 

•  Each fasten area of the clamp (Restore axial direction

and position of the clamp) 

•  Each bolt in the clamp (Restore fasten length of bolt in

the clamp) 

Torque 

N·m (kg·m / lb ft)

2.5  (0.25 / 21.7) 

filler neck side except flat deck model. 

•  The band clip (Restore position and fasten length of the

band clip) 

2.  Install the fuel tank. 
NOTE: Refer to "Fuel Tank" in this section. 
 

 

FUEL SYSTEM    6C – 17 

FUEL FILLER CAP 

 
 

 

 

 

RTW46CSH000301 

Legend 

  1.  Seal Ring 

 

 

 

General Description 

A vacuum valve and pressure valve are built into the fuel filler 
cap which adjusts the fuel pressure in the fuel tank to prevent 
fuel tank damage. 
 

 

Inspection 

The fuel filler cap must be inspected for seal condition. 
The fuel filler cap must be replaced if found defective 
 
CAUTION: A replacement fuel filler cap must be the same 
as the original. The fuel filler cap valve was designed 
primarily for this application and must be replaced with 
the same type or decreased engine performance may 
occur. 
 

 

 

 

 
 

 

6C – 18   FUEL SYSTEM 

INJECTION PUMP 

  

 REMOVAL AND INSTALLATION 

Read this Section carefully before performing any removal and installation procedure. This Section gives you 
important points as well as the order of operation. Be sure that you understand everything in this Section before you 
begin. 

 

 

 

Removal  

1. Battery 

Remove the battery from the battery tray. 

 

 

Battery 

Battery tray 

 

 

P1010011 

 

 

 

 

2. Drive Belt 

1)  Loosen the adjust bolt of the power steering pump 

pulley. 

2)  Remove the drive belt. 

3.  Power Steering Pump Assembly 
 

 

P1010003 

 

4.  Accelerator Control Cable 

Disconnect the accelerator cable from the intake throttle. 

 

 

 

5. Vacuum Hose 
 

Disconnect the vacuum hose from the EGR valve and the 
intake throttle. 

6. Fan 
 

FUEL SYSTEM    6C – 19 

 

7.  Power Steering Pump Bracket 

 

 

6C-4 

 

 

 

8. 

Throttle Position Sensor Harness Connector 

(4JA1TC/4JH1TC only) 

Disconnect the harness connector from the throttle 
position sensor. 

 

 

9.  Oil Level Gauge 

10. Fuel Pipe 

1)  Disconnect the fuel hoses from the fuel filter or priming 

pump. 

2)  Disconnect the fuel hoses from the injection pump. 

 

11.  Fuel Filter Assembly (Except EURO III model) 

6C-5

 

 

 

 

12. Fuel Filter Bracket (Except EURO III model) 
13. Leak Off Hose 

Disconnect the leak off hose at the injection pump. 

14. Injection Pipe Clip 
15. Injection Pipe 

1)  Loosen the injection pipe sleeve nuts at the delivery 

valve side and the injection nozzle side. 

Note: 

Do not apply excessive force to the injection pipes. 

2)  Loosen the injection pipe clip. 

3)  Remove the injection pipes. 

Note: 

Plug the delivery holder ports with the caps to prevent 
the entry of foreign material. 

 

16. Intake Manifold 

1)  Remove the EGR valve from the intake manifold and 

EGR pipe. 

2)  Loosen the intake rubber hoses clip. 

3)  Loosen the intake manifold bolts and nuts. 

17. Injection Pump Cover (4JA1TC/4JH1TC only)