Remove/install chain tensioner

AR05.10-P-7800SR

Remove/install chain tensioner

21.07.2014

ENGINE

281 in MODEL 453

1

Chain tensioner

3

Allen wrench

5

Tensioning rail

2

Piston

4

Clamping lever

6

Screw/bolt



Remove

1

Remove timing case cover

AR01.40-P-8000SR

2

Insert a suitable Allen wrench (3) into the bore of the chain tensioner (1) and thus press the clamping lever (4) of the chain tensioner (1) as far as possible in the direction of the piston (2).

3

Push in piston (2) by pressing fully on the tensioning rail (5) into the chain tensioner (1)

 The chain tensioner (1) must be replaced after each pressing in of the piston (2).

4

Pull the Allen wrench (3) out of the bore of the chain tensioner (1) then allow the piston (2) to shift slowly out of the chain tensioner (1) until the bores of the clamping lever (4) and the chain tensioner (1) are exactly opposing each other.

5

Insert Allen wrench (3) through the bores of the clamping lever (4) and the chain tensioner (1)

6

Remove screw/bolts (6)

7

Remove chain tensioner (1) from crankcase

8

Pull Allen wrench (3) out of the bore of the chain tensioner (1)



Install

9

Lay new chain tensioner (1) on the crankcase and tighten down with screw/bolts (6)


Install a new chain tensioner (1) as a rule.
Reuse of the chain tensioner (1) can lead to engine damage.

 Bolt, timing chain tensioner to crankcase

*BA05.10-P-1004-01P

10

Remove the retainer installed at the works from the bore of the new chain tensioner (1).

11

Install timing case cover

AR01.40-P-8000SR

 Timing chain drive

Number

Designation

ENGINE 281

BA05.10-P-1004-01P

Bolt, timing chain tensioner to crankcase

Nm

10