Opel Frontera UBS. Manual - part 412

 

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Opel Frontera UBS. Manual - part 412

 

 

FUEL SYSTEM 6C – 5

FUEL FILTER AND WATER SEPARATOR

A cartridge type fuel filter and a water separator are used along with the VE type injection pump.
As the inside of the injection pump is lubricated by the fuel which it is pumping, the fuel must be perfectly
clean.  The fuel filter and the water separator remove water particles and other foreign material from the
fuel before it reaches the injection pump.
The water separator has an internal float.  When the float reaches the specified level, a warning light comes
on to remind you to drain the water from the water separator.
A diaphragm type priming pump is installed at the top of the water separator.  It is used during the water
draining and the air bleeding procedures.

6C – 6 FUEL SYSTEM

INJECTION NOZZLE

The injection nozzle sprays pressurized fuel from the injection pump through the injection nozzle orifices
and into the combustion chamber.
4J series engines with the DFI (Double Formation Injection) Pintaux Type fuel injection nozzle having a sub-
injection hole is used. This injection nozzle contibutes to substantially minimize the diesel nocking sound
noticeable in the cold engine idling operation.

FUEL SYSTEM 6C – 7

ON-VEHICLE SERVICE

FUEL FILTER ASSEMBLY

REMOVAL

Preparation:

 Disconnect battery ground cable.

1.

Fuel Filler Cap

2.

Lead Switch Harness Connecter

3.

Fuel Hose

Disconnect fuel hose from filter body.
Plug the hose ends to prevent fuel spillage.

4.

Remove the Bolt on Fuel Filter Bracket.

5.

Fuel Filter Assembly

INSTALLATION

5.

Fuel Filter Assembly

Install the filter

4.

Tighten the Fuel Filter Bracket Fixing Bolt.

3.

Fuel Hose

Connect hoses to filter body.

2.

Lead Switch Harness Connecter

1.

Fuel Filler Cap

Connect the battery ground cable.

Feed fuel to the injection pump by weans of the
priming, and bleed the fuel system.

6C – 8 FUEL SYSTEM

FUEL FILTER CARTRIGE

DISASSEMBLY

Drain fuel completely from the fuel filter.

Protect the filter body with cloth and lightly grip with
a vise.

Remove sedimentor center.

Remove the cartridge using a filter wrench.
Filter wrench: 5-8840-0253-0(J-22700)

REASSEMBLY

Install the sedimentor center.
Clean the cartridge mounting surface of filter body
so that the cartridge can be securely.
Apply engine oil thinly to new cartridge o-ring.

To facilitate bleeding, fill the new cartridge with
light oil.

Tighten the cartridge until o-ring comes in contact
with the sealing, taking care not to spill the light
oil.

Retighten 1/3~2/3 using a filter wrench.
Filter wrench: 5-8840-0253-0(J-22700)

Bleeding

Operate priming pump to send the air in the fuel
system to the injection pump.

Loosen injection pump bleeding plug, and operate
the priming pump until no bubble is made.

Tighten the bleeding plug.

Start the engine, and if it is not started in 10 sec-
onds or less, repeat the bleeding steps.

Make sure of no fuel leakage, and tighten the
priming pump.

Draining

When the water in the sedimentor reaches the
specified volume, warning light is actuated.
In this case, follow the draining steps below.

Set a vinyI hose over the drain plug.

Loosen the drain plug.

To drain the water, operate the priming pump
several times.

After draining, tighten the drain plug.

Operate the priming pump several times to check
for fuel leakage.

Check and see the warning light is off.

 

 

 

 

 

 

 

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