Remove/install high-pressure pump

AR07.02-D-1020SD

Remove/install high-pressure pump

25.2.11

 

Remove/install

 Danger!

Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure

Keep all ignition sources out of hazard area.

Do not carry out any work on systems when they are under pressure

AS07.16-Z-0001-01A

 Danger!

Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel and risk of injury to eyes and skin caused by contact with fuel

No fire, sparks, open flames or smoking.
Only pour fuels into suitable and appropriately marked containers.

Wear protective clothing when handling fuel.

AS47.00-Z-0001-01A

1

Remove air filter housing

AR09.10-D-1150SD

2

Remove fan shroud

AR20.40-D-6800SD

3

Cover poly-V belt (1) in area of the high pressure pump (2) with rags

4

Disconnect electrical connectors (3, 4)

5

Unbolt pressure line (5) at the high pressure pump (2)

 Counterhold line connection at high pressure pump (2) to avoid leaks after assembly.

Do not squeeze or bend pressure line (5). Seal connections with suitable stop plugs and ensure maximum cleanliness.

 Installation: Check pressure line (5) sealing cone; replace pressure line (5) if necessary. Ensure correct seating of pressure line (5).



*BA07.16-N-1015-01A

 Socket wrench

*611589000300

6

Detach fuel hoses (6) on high pressure pump (2)

 Catch escaping fuel. Mark installation locations of fuel hoses (6) at high pressure pump (2).

 Installation: Replace clamps.

7

Detach high pressure pump (2) at cylinder head and take out upwards

 The high pressure pump (2) is attached to cylinder head by three bolts.

 Installation: Replace O-ring (7) and align drive plate (8).



*BA07.16-N-1005-01A

8

Install in the reverse order

 Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

9

Perform engine test run and check the fuel system for leaks in the area of the high-pressure pump (2)

 Repeat starting procedure until fuel system is bled and the engine starts. Do not actuate starter for longer than 10 seconds otherwise damage can occur.

Number

Designation

Engine
646
in model
906

BA07.16-N-1005-01A

Bolt, high-pressure pump to cylinder head

Nm

14

BA07.16-N-1015-01A

Nut connecting pressure line on high pressure pump

M121.5

Nm

22