Measures, set valve clearance

AR05.30-S-1560PB

Measures, set valve clearance

18.06.2017

Engine

200 in model 470

01

Feeler gage

1

Cup tappet

2

Camshaft



Remove

1

Remove cylinder head cover

AR01.20-S-5014PB



Check

2

Set the piston of cylinder 1 to ignition TDC

 To do this rotate engine at crankshaft center bolt.
In this position, the valve clearance of the exhaust valve of cylinders 1 and 3 , as well as the intake valves of cylinders 1 and 2 can be checked.

3

Insert feeler gauge (01) between the cam of the respective camshaft (2) and the respective cup tappet (1)


Check or adjust the valve clearance only when the engine is cold, at the earliest 30 min. after switching off the engine.
Measurement errors and malfunctions may can occur otherwise.

 Write down test value.

 The valve clearance is correct if the feeler gauge (01) can be moved with little resistance.

Intake valve clearance

*BE05.30-N-1001-06PB

Exhaust valve clearance

*BE05.30-N-1002-06PB

4

Set the piston of cylinder 1 to overlap TDC

 To do this rotate engine at crankshaft center bolt.
In this position, the valve clearance of the exhaust valve of cylinders 2 and 4 , as well as the intake valves of cylinders 3 and 4 can be checked.

5

Insert feeler gauge (01) between the cam of the respective camshaft (2) and the respective cup tappet (1)


Check or adjust the valve clearance only when the engine is cold, at the earliest 30 min. after switching off the engine.
Measurement errors and malfunctions may can occur otherwise.

 Write down test value.

 The valve clearance is correct if the feeler gauge (01) can be moved with little resistance.

Intake valve clearance

*BE05.30-N-1001-06PB

Exhaust valve clearance

*BE05.30-N-1002-06PB

Adjust

6

Remove camshafts (2)

AR05.20-S-6992PB

7

Remove all cup tappets (1) from the cylinder head

 Mark installation position.

8

Check and measure all cup tappets (1)

AR05.30-S-1560-01PB

 If the valve clearance is is outside of the test tolerance, the difference must be determined to achieve the test tolerance and compensated for using a suitable cup tappet (1).

Cup tappet outside diameter

*BE05.30-N-1001-04PB

If the valve clearance is too large



Add difference to the height of the removed cup tappet (1).

If the valve clearance is too small



Deduct the difference from the height of the removed cup tappet (1).

9

Install the correct cup tappet (1)

 Wet cup tappets (1) and mount for the cup tappets (1) in cylinder head slightly with oil.



Install

10

Install camshafts (2)

AR05.20-S-6992PB

11

Install cylinder head cover

AR01.20-S-5014PB

Check values of valve timing

Number

Designation

Engine 200 in model 470

BE05.30-N-1001-04PB

Cup tappet outside diameter

mm

33,977...33,987

Valve clearance

Number

Designation

Engine 200 in model 470

BE05.30-N-1001-06PB

Intake valve clearance

cold

mm

0,24...0,32

Valve clearance

Number

Designation

Engine 200 in model 470

BE05.30-N-1002-06PB

Exhaust valve clearance

cold

mm

0,26...0,34