Remove/install camshaft housing

AR05.20-P-6995V

Remove/install camshaft housing

2.11.11

 

Remove/install

1

Open engine hood

AR88.40-P-1000V

2

Detach cover (9) of cylinder head cover (4) toward top

3

Remove engine intake air duct upstream of air filter housing

 Danger!

Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by swallowing coolant.

Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.

Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

4

Drain coolant at radiator

AR20.00-P-1142V



Notes on coolant

AH20.00-N-2080-01A

5

Remove housing (5) of coolant thermostat

 Installation: Replace sealing ring.



*BA01.30-P-1009-01J

6

Remove wide band silencer (6)

AR09.41-P-6825V

7

Remove poly-V belt (7)

AR13.22-P-1202V

8

Remove guide pulley (8)



*BA01.40-P-1011-01G

9

Remove ignition coils

AR15.12-P-2003V

10

Remove spark plugs



AP15.10-P-1580V

11

Detach engine wiring harness for removal of cylinder head cover (9)

AR01.00-P-2410-02V

12

Remove cylinder head cover (9)

AR01.20-P-5014V

13

Detach front cover (10) from cylinder head

AR01.30-P-5700V

14

Crank engine at crankshaft in direction of rotation until piston of cylinder 1 is positioned on ignition TDC

 The cams of intake camshaft (1) and exhaust camshaft (2) on cylinder 1 must be pointing upright at an angle.

15

Release timing chain

AR05.10-P-7605-01TK

 Wedge

*271589003100

16

Install camshaft adjuster (11)

 At the same time unhinge timing chain and secure against falling down.

AR05.20-P-7201V

 Installation: Adjust basic position of camshafts.

AR05.20-P-6020V

17

Remove screws from combination valve (3) at camshaft housing bottom section (12)



*BA14.20-P-1006-01D

18.1

Remove right exhaust camshaft Hall sensor (B6/7)

When replacing the camshaft housing

19

Remove screw from shield (13) of exhaust manifold at camshaft housing bottom section (12)



*BA05.20-P-1004-03A

20

Remove camshaft housing top section (14)

 Slacken bolts in the reverse order of the tightening procedure: 

Tightening procedure for camshaft housing

AR05.20-P-6995-01QK



*BA01.30-P-1003-01J

21

Take out intake camshaft (1)

 Installation: Oil compensation elements and camshaft bearing points.

The cams on the intake camshaft (1) must be pointing upright at an angle at cylinder 1 after inserting intake camshaft (1) (risk of cracks and fracture!).

22

Take out exhaust camshaft (2)

 Pay attention that the vacuum pump is not damaged when taking out the drive.

 Installation: Oil compensation elements, drive of vacuum pump and camshaft adjusters.

Make sure that the drive of the vacuum pump is not damaged when inserting the exhaust camshaft (2).

The cams on the exhaust camshaft (2) must be pointing upright at an angle, at cylinder (1) after inserting exhaust camshaft (2) (risk of cracks and fracture!).

23

Remove camshaft housing bottom section (12)

 Heat up the sealing compound using a heat gun, then carefully pry off the camshaft case lower section (12).

 Installation: Coat sealant:





Information on application of sealant to camshaft housing bottom section (12)

AH05.20-P-6995-01QK



*BA01.30-P-1004-01J

Loctite 5970 sealant

*BR00.45-Z-1013-01A

Heat gun
gotis://K_60-65_11.0



Clean

24

Clean sealing surfaces

 Do not use any sharp-edged tools or abrasive paper as this will damage the sealing surfaces.

AR01.00-P-0050-01A

Loctite 7200

*BR00.45-Z-1038-04A

Loctite 7063 cleaning spray (150 ml)

*BR00.45-Z-1046-04A

25

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

26

Check for leaks with engine running

Number

Designation

Engine
271

BA01.30-P-1003-01J

Bolt, upper part of camshaft bearing housing at cylinder head

M7

Stage 1

Nm

10

Stage 2

°

90

BA01.30-P-1004-01J

Bolt, lower part of camshaft bearing housing at cylinder head

M7

Nm

14

BA01.30-P-1009-01J

Bolt, thermostat housing to cylinder head

M6

Nm

9

Number

Designation

Engine
271

BA01.40-P-1011-01G

Bolt, guide pulley to timing case

Nm

20

Number

Designation

Engine 271.910/
940/941/
944/946/
948/950/
952/954/
958

BA14.20-P-1006-01D

Combination valve to cylinder head

Nm

9

Number

Designation

Engine 271

BA05.20-P-1004-03A

Shield on camshaft bearing housing

M6

Nm

8

Number

Designation

Order number

BR00.45-Z-1013-01A

Loctite 5970 sealant

A 003 989 98 20

BR00.45-Z-1038-04A

Loctite 7200

Henkel Loctite Deutschland GmbH
Arabellastrasse 17
81925 München
Germany
Tel. +49 899268-0
Fax + 49 899101978
www.Loctite.de

BR00.45-Z-1046-04A

Loctite 7063 cleaning spray (150 ml)

A 001 986 71 71 10