Remove/install chain tensioner

AR05.10-P-7800EVO

Remove/install chain tensioner

16.5.11



Removing

1

Remove alternator

AR15.40-P-5032CW

2

Puncture stop plug in the middle for chain tensioner (1) using a screwdriver and pry out

3

Remove chain tensioner (1)

 The engine must not be turned anymore for a removed chain tensioner (1) since otherwise the timing chain can skip and engine damage would occur.



*BA05.10-P-1001-01F

4

Remove intake camshaft solenoid

AR05.20-P-7295CW



Install

5

Screw in chain tensioner (1)

 Replace chain tensioner (1). The previously installed chain tensioner (1) must not be reinstalled since, on removal of pressure bolt it is pressed into the end position and the locking device of the pressure bolt prevents its return stroke. This would overstretch the timing chain on reinstalling.

6

Block intake camshaft

 Counterhold intake camshaft with socket insert at the center bolt on the camshaft adjuster.



*271589001000

7

Rotate engine at the center bolt for the crankshaft, counter to the direction of rotation.

 Turn crankshaft at 45 Nm and a max. of a 15 °crank angle until the clamping pin on the chain tensioner (1) is unlocked.



*001589650900

8

Install intake camshaft solenoid

AR05.20-P-7295CW

9

Install stop plug for chain tensioner (1) with drift



*271589001500

10

Install alternator

AR15.40-P-5032CW



Checking

 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

11

Conduct engine test run while checking for proper operation of the engine

Number

Designation

Engine
271

BA05.10-P-1001-01F

Bolt, chain tensioner to bracket

Nm

40