Remove/install chain tensioner

AR05.10-P-7800OLI

Remove/install chain tensioner

07.11.2019

Engine

654 in model 205, 253

Engine

656 in model 253

Modification notes

25.10.2019

Bracket screw, diesel particulate filter to crankcase/timing case

Model 253 with engine 656

BA49.10-P-1011-02O

Shown on engine 654

1

Chain tensioner

2

Sealing ring

3

Sealing ring

4

Cover

5

Bolts

Shown on engine 654 (right-hand drive vehicle)

4

Cover

6

Bracket

 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

 Caution

Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil

Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.

AS18.00-Z-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1.1

Remove exhaust gas aftertreatment unit and place to one side.

Engine 654 in model 205.### 2# , 253.### 2#
Engine 656 in model 253.### 2#

Engine 656 in model 253.### 2#

AR49.20-P-1500OIF

Engine 654 in model 205.### 2# , 253.### 2#

AR49.20-P-1500OLI

1.2

Remove the diesel particulate filter and place to one side.

Engine 654 in model 205.### 1# , 253.### 1#
Engine 656 in model 253.### 1#

Engine 656 in model 253.### 1#

AR49.20-P-1200OIF

Engine 654 in model 205.### 1# , 253.### 1#

AR49.20-P-1200OLI

2

Remove bracket (6).

Engine 654 in model 205.### 2# , 253.### 2#
Engine 656 in model 253.### 2#

 Engine 656 in model 253.### 2# Screw, diesel particulate filter holder to crankcase/timing case

*BA49.10-P-1011-02O

 Engine 654 in model 205.### 2# , 253.### 2# Bolt, diesel particulate filter bracket to crankcase

*BA49.10-P-1010-02H

3

Remove screws (5) and remove cover (4).

 Installation: Replace sealing ring (3).

 Housing cover for chain tensioner to crankcase/timing case cover

*BA05.10-P-1006-03A

4

Remove the chain tensioner (1) and collect escaping engine oil using a rag.

 Installation: Replace sealing ring (2).

 Chain tensioner to crankcase/timing case cover

*BA05.10-P-1005-03A

5

Install in the reverse order.

Concluding tasks

6

Check engine oil level and correct if necessary.



AP18.00-P-1812MKI

 Chain drive, belt drive

Number

Designation

Engine 654

Engine 656

BA05.10-P-1005-03A

Chain tensioner to crankcase/timing case cover

Nm

80

80

 Chain drive, belt drive

Number

Designation

Engine 654

Engine 656

BA05.10-P-1006-03A

Housing cover for chain tensioner to crankcase/timing case cover

Nm

8

8

 Exhaust system

Number

Designation

Model 205 with engine 654

Model 253 with engine 654

BA49.10-P-1010-02H

Bolt, diesel particulate filter bracket to crankcase

front

Nm

20

20

Rear

Nm

25

25

 Exhaust system

Number

Designation

Model 253 with engine 656

BA49.10-P-1011-02O

Screw, diesel particulate filter holder to crankcase/timing case

front

Nm

20

Rear

Nm

25