Removing, installing chain tensioner · ar0510s7800a · Mercedes-Benz WIS

AR05.10-S-7800A

Removing, installing chain tensioner

9.2.95

ENGINE 111 in MODEL 638

S05.10-3000-11

1 Terminal piece

13 Chain tensioner box

14 Stopper retainer

S05.10-3023-06

1 Terminal piece

2 Ball head (anti-return valve)

3 Ball head guide

4 Pressure spring

5 Stopper retainer

6 Filler pin

7 Pressure spring

8 Lock spring

9 Bolt

10 Ball head (regulator valve)

11 Pressure spring

12 Pressure elemn. (pressed in)

13 Chain tensioner box

14 Stopper retainer

15 Timing case cover

16 Cylinder head

17 Combined screw

18 Tensioner rail

19 Cylinder head gasket

20 Timing chain

21 Plastic support (tensioner rail)

A Oil inflow duct

B Oil pan for chain tensioner

	Removing
1	Disconnect the battery		AR54.10-S-0005A
2	Remove the generator from its support and separate it, keeping the electrical cables connected.	 Cover the generator with a clean cloth	AR15.40-S-5032A
3	Remove the complete chain tensioner (13)
	Installation
4	Install the chain tensioner (13)	 Dismantle the chain tensioner and assemble it again, as described	AR05.10-S-7800-02A
			*WH58.30-Z-1035-06A
			*BA05.10-N-1001-01A
			*BA05.10-N-1002-01A
5	Install the generator in its support		AR15.40-S-5032A
6	Connect the battery		AR54.10-S-0005A
7	Check the leaktightness.

 Timing chain drive

Code	Name		Engine 111.948/ 978


BA05.10-N-1001-01A	Terminal part in the chain tensioner box	Nm	40
BA05.10-N-1002-01A	Chain tensioner box in the timing case cover	Nm	80

Commercially available tools

Number	Designation
WH58.30-Z-1035-06A	10 mm pin wrench socket, 1/2" square