Isuzu KB P190. Manual — part 532

6C-10 ENGINE FUEL (C24SE)

Fuel Tube / Quick – Connector Fittings

Precautions

• Do not light a match or create a flame.

• Keep flames away from your work area to prevent

flammable materials from catching fire.

• Disconnect battery ground cable to prevent

electrical shorts.

• Pre-treat piping system or associated parts from

thermal damage or from spattering when welding
or similar heat-generating work.

Cautions During Work

140R100032

Legend

(1) O-ring

(2) Port

(3) Connector

(4) Plastic Tube

Do not expose the assembly to battery electrolyte or do
not wipe the assembly with a cloth used to wipe off spilt
battery electorolyte.

Piping that has been splattered with battery electrolyte
or battery electrolyte soaked cloth that was wiped on the
piping cannot be used.

Removal

1. Open the fuel cap to relieve the fuel pressure in the

tank.

Use compressed air to remove any dirt on the fuel
quick connect fittings prior to disconnecting the
fittings.

141R100002

When disconnecting the fuel pipe, cover the area
with a cloth to prevent fuel from splashing as the
fuel pipe may still have some pressure in it.

2. For removal of the quick connector, hold the quick

connector in one hand, and pull out the connentor
with the other hand while pressing the square
relieve button of the connector, as illustrated.

140R100037

NOTE: Do not use tools of any kind. Only use bare
hands when disconnecting the connector. Use a
lubricant (light oil) and/or push and pull the connector
until the pipe is disconnected.

Cover the connectors that was removed with a
plastic bag, to prevent dust or rain water from
entering.

ENGINE FUEL (C24SE) 6C-11

140R100028

Reuse of Quick–Connector

• Replace the port and connector if scratch, dent or

crack is found.

• Remove any dirt build up on the port when installing

the connector. Replace the connector, if there is any
forms of rust, dent, scratch.

• After cleaning the port, insert it straight into the

connector until it clicks. After it clicks, try pulling at
49N (5kgf) it out to make sure that it is not drawn
and is securely locked.

140R100036

Assembling Advice

By applying engine oil or light oil to the pipe, port makes
pipe assembly easier. The pipe assembly should take
place immediately after applying oil (to prevent dust
from sticking to the pipe surface – which may
decrease sealing ability).

Test/Inspection After Assembling

1. Reconnect the battery negative cable.

2. Turn the ignition key to the “ON" position and listen

for pump start-up sound. Inspect for leaks, the
fuel pressure will increase as the fuel pump is
actuated.

3. Perform leak inspection (step 2) several times.

4. Start the engine and observe the engine idle speed.

The presence of dirt in the fuel system may affect
the fuel injection system.

6C-12 ENGINE FUEL (C24SE)

Fuel Pump Relay

General Description

In order to control the fuel pump and sender assembly
(FPAS) operation, the FPAS relay is provided. When
the starter switch is turned to “ON" position, the FPAS
relay operates the FPAS for 2 seconds.

When it is turned to “START" position, the Engine
Control Module receives the reference pulse from the
Ignition Control Module and it operates the relay, again
causing the FPAS to feed fuel.

ENGINE FUEL (C24SE) 6C-13

Fuel Tank

Fuel Tank and Associated Parts

RTW46FLF000301

Legend

(7) Fuel Filler Hose

(1) Bolt; Fuel Tank

(8) Fuel Tube/Quick Connector

(2) Fuel Tank Band

(9) Evapo Tube/Quick Connector

(3) Rear Side Shield

(10) Fuel Filter

(4) Side

Shield

(11) Band; Under Shield

− Only Specified Model

(5) Retainer

(12) Under Shield

− Only Specified Model

(6) Fuel Tank