Remove/install vacuum pump

AR43.05-S-1320SE

Remove/install vacuum pump

04.08.2015

Model

639 with engine 642

Model

906 with engine 642.896/898/992/993

Modification notes

08.06.2015

Repair method has been revised

Operation step 6.2

Shown on model 639 with engine 642

1

Holder

2

Screws/bolts

3

Vacuum line

4

Screw/bolt

5

Screws/bolts

6

Vacuum pump

7

Screws/bolts

N14/3

Glow output stage

Shown on model 906 with engine 642.896

6

Vacuum pump

8

Screws/bolts

 

Remove/install

1

Remove air filter housing

Model 639 with engine 642

AR09.10-S-1150SE

Model 906 with engine 642.896/898/992/993

AR09.10-D-1150SF

2

Remove screws/bolts (2) and detach glow output stage (N14/3) from holder (1)

Model 639 with engine 642
Model 906 with engine 642.992

 Do not disconnect electrical connections of glow output stage (N14/3).

 Bolt, glow output stage to bracket

*BA15.20-N-1003-01C

3

Remove vacuum line (3) and place to one side

4

Remove screw/bolt (4) of holder (1)

5

Detach engine wiring harness from fixture (1)

 Installation: Replace cable tie.

6.1

Remove screws/bolts (5) and upper screw/bolt (7) and remove holder (1)

Model 639 with engine 642
Model 906 with engine 642.992

 Bolt, vacuum pump to cylinder head

*BA43.05-N-1001-01E

6.2

Remove screws/bolts (5, 8) and upper screw/bolt (7) and remove holder (1)

Model 906 with engine 642.896/898/993

 Do not pull out screws/bolts (8).

 Bolt, exhaust gas recirculation valve housing to bracket

*BA14.20-N-1022-01H

 Bolt, vacuum pump to cylinder head

*BA43.05-N-1001-01E

7

Remove lower screw/bolt (7) and detach vacuum pump (6)

 Installation: Replace seal. Align drive plate of vacuum pump (6).

 Bolt, vacuum pump to cylinder head

*BA43.05-N-1001-01E

8

Install in the reverse order

 Danger !

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

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

AS00.00-Z-0005-01A

9

Conduct engine test run and check engine for leaks in the area of the vacuum pump (6)

 Exhaust gas recirculation

Number

Designation

Engine 642.8 in model 906

Engine 642.993 in model 906

BA14.20-N-1022-01H

Bolt, exhaust gas recirculation valve housing to bracket

M8x20

Nm

28

28

M8x80

Nm

20

20

 Preglow system

Number

Designation

ENGINE 642

BA15.20-N-1003-01C

Bolt, glow output stage to bracket

Nm

8

 Vacuum pump

Number

Designation

Model 639, 906 with engine 642

BA43.05-N-1001-01E

Bolt, vacuum pump to cylinder head

Nm

9