Jaguar XJ (X350). Manual — part 706

12

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NOTE:

Left-hand shown, Right hand similar.

Remove and discard the high-pressure fuel supply lines.

Install suitable blanking caps to the open threaded ports on the fuel

injectors and the fuel rail.

13 . NOTE:

Left-hand shown, right-hand similar.

Remove the fuel rail.

Installation

1

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WARNING: Do not smoke or carry lighted tobacco or open flame of any type when

working on or near any fuel related components. Highly flammable mixtures are always

present and may ignite. Failure to follow these instructions may result in personal injury.

WARNING: This procedure involves fuel handling. Be prepared for fuel spillage at all

times and always observe fuel handling precautions. Failure to follow these instructions

may result in personal injury.

WARNING: Do not carry out any repairs to the fuel system with the engine running.

The fuel pressure within the high-pressure system can be as high as 1650 bar. Failure to

follow this instruction may result in personal injury.

CAUTION: Make sure the workshop area in which the vehicle is being worked on is

as clean and as dust free as possible. Foreign matter from work on clutches, brakes or from

machining or welding operations can contaminate the fuel system and may result in later

malfunction.

CAUTION: Always carry out the cleaning process before carrying out any repairs to

the fuel injection system components. Failure to follow this instruction may result in

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foreign matter ingress to the fuel injection system.

CAUTION: Diesel fuel injection equipment is manufactured to very precise

tolerances and fine clearances. It is therefore essential that absolute cleanliness is observed

when working with these components. Always install blanking caps to any open orifices or

lines.

NOTE:

Left-hand shown, right-hand similar.

Install the fuel rail.

Tighten to 24 Nm.

2

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CAUTION: Do not allow the unions to hit the olive ends of the high-pressure fuel

supply line as this may damage the ends of the line and allow foreign matter enter the fuel

injection system.

Position the high-pressure fuel supply lines as near to the final installation position as possible

and then remove and discard the blanking plugs from the high-pressure fuel supply lines and

fuel rail.

3

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CAUTION: Do not allow the unions to hit the olive end of the high-pressure fuel

supply line and allow foreign matter to enter the fuel injection system.

CAUTION: Maintain pressure on the high pressure fuel supply line to keep the olives

in contact with the fuel injectors and the fuel rail cones while installing unions.

NOTE:

Remove and discard the blanking caps.

Install the new high-pressure fuel supply lines.

1)

Install the new high-pressure fuel supply line, tighten the fuel supply line

unions finger tight.

Tighten the high-pressure fuel supply lines in the sequence shown in four

stages:

Stage 1: Tighten the high-pressure fuel supply line union 1 to 15 Nm.

Stage 2: Tighten the high-pressure fuel supply line union 2 to 15 Nm.

Stage 3: Tighten the high-pressure fuel supply line union 1 to 30 Nm.

Stage 4: Tighten the high-pressure fuel supply line union 2 to 30 Nm.

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