Remove/install chain tensioner

AR05.10-S-7800E

Remove/install chain tensioner

21.02.2020

Model

447 with engine 651

Modification notes

18.11.2014

Chain tensioner in cylinder head

Engine 651 in model 447

BA05.10-N-1005-01F

21.11.2014

Method modified

Operation steps 2, 4, 5, 6, 8

11.02.2015

Method completely changed

Operation steps 1 to 21

29.07.2015

Bolt, starter heat shield to crankcase

Engine 651

BA15.30-N-1008-01G

20.02.2020

Engine oil

Engine 651 in model 447

BF18.00-N-1001-01L

Shown without CODE ZG2 (Permanent all-wheel drive)

3

Screw

4

Screw

5

Bracket

6

Retaining clamp

7

Retaining clamp

13

Heat shield

B28/12

Diesel particulate filter differential pressure sensor

8

Vacuum hose

11

Heat shield

13

Heat shield

9

Aneroid capsule

12

Screw

14

Chain tensioner

10

Retaining clamp

13

Heat shield

14

Chain tensioner

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 

Remove/install

1

Remove lower engine compartment paneling

AR61.20-S-1105E

 Installation: Only install engine compartment paneling after leaktightness test.

2

Remove air filter housing

AR09.10-S-1150E

3

Turn engine to top dead center position

AR01.10-S-1000-01E

 This avoids back pressure for removing the chain tensioner (14).

 Counterholder

*651589084000

 Counterholder

*651589004000

4

Carefully lift up engine cover and slide forward slightly

 Do not remove engine cover completely. The screw/bolt (3) of the diesel particulate filter differential pressure sensor (B28/12) must be accessible.

 Installation: Check engine cover is correctly seated.

5

Remove engine air intake duct downstream of air filter

AR09.10-S-8130E

6

Remove bolt (3)

Model 447 with engine 651
except code ZG2 (Permanent all-wheel drive)

 Screw/bolt, differential pressure sensor to bracket for differential pressure sensor

*BA07.04-N-1009-01F

7

Remove bracket (5)

Model 447 with engine 651
except code ZG2 (Permanent all-wheel drive)

 To do this, remove screw (4).

8

Suspend electrical wiring harness from retaining clamp (6)

Model 447 with engine 651
except code ZG2 (Permanent all-wheel drive)

9

Remove retaining clamp (7) with electrical wiring harness

Model 447 with engine 651
except code ZG2 (Permanent all-wheel drive)

10

Move diesel particulate filter digital differential pressure sensor (B28/12) out of working area

Model 447 with engine 651
except code ZG2 (Permanent all-wheel drive)

11

Remove vacuum hose (8) from aneroid capsule (9)

12

Remove retaining clamp (10)

13

Move vacuum hose (8) out of the working area

14

Remove heat shield (11)

 Screw/bolt, heat shield to exhaust manifold

*BA14.10-N-1007-01O

15

Remove screw (12)

 Bolt, starter heat shield to crankcase

*BA15.30-N-1008-01G

16

Pull heat shield (13) a few millimeters away from the crankcase and push down up to end stop (see arrow)

 This allows access to the chain tensioner (14).

 Installation: Position heat shield (13) correctly.

17

Remove chain tensioner (14)

 Place a suitable receptacle underneath.

 Chain tensioner in cylinder head

*BA05.10-N-1005-01F

18

Replace sealing ring of chain tensioner (14)

Only if the chain tensioner (14) is not replaced.

AR05.10-D-7800-04WE

19

Install in the reverse order



Check

20

Check engine oil level; correct if necessary

 Engine oil

*BF18.00-N-1001-01L

 Warning

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

21

Check for leak tightness with engine running

 Visual inspection only.

 Timing chain, chain tensioner

Number

Designation

Engine 651 in model 447

BA05.10-N-1005-01F

Chain tensioner in cylinder head

Nm

80

 Sensors

Number

Designation

Engine 651 in model 447

BA07.04-N-1009-01F

Screw/bolt, differential pressure sensor to bracket for differential pressure sensor

Nm

9

 Exhaust manifold

Number

Designation

Engine 651 in model 447

BA14.10-N-1007-01O

Screw/bolt, heat shield to exhaust manifold

Nm

8

 Starter

Number

Designation

Engine 651

BA15.30-N-1008-01G

Bolt, starter heat shield to crankcase

M6

Nm

9

M8

Nm

20

 Filling capacities for engine lubrication system

Number

Designation

Engine 651 in model 447

BF18.00-N-1001-01L

Engine oil

Filling capacity (oil and filter change)

Liter

8,5

Sheet

BB00.40-P-0228-51A

Sheet

BB00.40-P-0229-51A

Sheet

BB00.40-P-0229-52A

Sheet

-

Sheet

-

Sheet

-

Sheet

-

Sheet

-