Replace valve stem seals

AR05.30-T-3510BB

Replace valve stem seals

27.6.01



Remove

1.1

Open left rear service flap

Model 671.015/020/021/030/042/332/333

2.1

Open rear lid

Model 613.358/388

3.1

Remove interior compartment flap above engine

Model 613.358/388

AR88.40-T-1100-03BA

4

Remove cylinder head cover

Model 613.358/388

AR01.20-T-5014BA

Model 671.015/020/021/030/042/332/333

AR01.20-T-5014AA

5

Remove rocker arm assembly

AR05.00-T-5521BB

6.1

Attach cranking/blocking device for engine

 Only necessary if the cylinder head is not removed

AR03.30-T-1600-03BB



*BA01.60-N-1001-01H



*407589006300

7

Move piston of the appropriate cylinder into TDC position

 Piston must be in TDC position to avoid the valves dropping into the cylinder.

8

Remove valve springs

 Cylinder head must not be removed.

AR05.30-T-3510-03BB



*541589006100

9

Pull off valve stem seal (1)

 Do not damage valve guide (4).



Install

10

Oil valve stems (3) with engine oil

11

Fit sleeve (2) onto valve stem (3)

The sleeve (2) prevents the groove in the valve stem (3) causing damage to the valve stem seal (1)



*346589016100

12

Press new valve stem seal (1) onto valve guide (4)

 Use a suitable drift to press valve stem seal (1) over the sleeve (2) by hand as far as the stop. Ensure that the valve stem seal (1) is tightly seated against valve guide collar.

13

Detach sleeve (2) from valve stem (3)

14

Install valve springs

AR05.30-T-3510-03BB



*541589006100

15

Install rocker arm assembly

AR05.00-T-5521BB

16

Set valve clearance



AP05.30-T-0560BB

17.1

Take off cranking/blocking device for engine

 Only required if the cylinder was removed. Cranking/blocking device must be removed before starting the engine.

AR03.30-T-1600-03BB



*BA01.60-N-1001-01H



*407589006300

18

Install cylinder head cover

Model 613.358/388

AR01.20-T-5014BA

Model 671.015/020/021/030/042/332/333

AR01.20-T-5014AA



*BA01.20-N-1001-01I



*BA01.20-N-1002-01I

19.1

Close left rear service flap

Model 671.015/020/021/030/042/332/333

20.1

Close tailgate

Model 613.358/388

21.1

Install interior compartment flap above engine

Model 613.358/388

AR88.40-T-1100-03BA

Number

Designation

Engine 457.9

BA01.20-N-1001-01I

Bolt of light alloy cylinder head cover to cylinder head

Nm

25

BA01.20-N-1002-01I

Bolt of plastic cylinder head cover to cylinder head

Nm

20

Number

Designation

Engine 457.9

BA01.60-N-1001-01H

Bolt of end cover of inspection hole to timing case

Nm

25