Set valve clearance

AP05.30-D-0560A

Set valve clearance

23.7.08

1

Remove cylinder head cover



Remove/install cylinder head cover

AR01.20-W-5014A

2

Select method for adjusting valve clearance

 Adjust as per injection sequence
= Method 1

Adjust in two crankshaft positions
= Method 2



General information on adjusting valve clearance

Method 1

AH05.30-N-1000-01C



General information on adjusting valve clearance

Method 2

AH05.30-N-1000-01D

3.1

Detach cap (3) and install rotation device (4) on inspection hole in timing case and move engine to the crankshaft position of the selected adjustment method

If the engine is to be cranked using the turning device (4).



*BA01.60-N-1002-01A



*904589046300

 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

3.2

Press engine stop switch (S182), then additionally press engine start switch (S181) and move engine into the crankshaft position of the selected adjustment method

If the engine is to be cranked using the starter.

 The engine does not start when the engine start switch (S181) and engine stop switch (S182) are pressed simultaneously.

4

Adjust valve bridges

Only on engine 904.9 up to end no. 039739 and only required after operations on the cylinder head or rocker mechanism.



Adjust valve bridges

AR05.00-W-5521-02B



*BA05.00-N-1003-01A

5

Inspect valve clearance (arrow) and adjust

 Check or adjust the valve clearance (arrow) when the engine is cold.

Wait at least 30 minutes after switching off engine, even if engine has operated only for a short time, in order to ensure that engine is evenly warmed through.

AP05.30-W-0560-01B

Valve clearance

*BE05.30-N-1012-01B

Test tolerance for valve clearance

The test value tolerance of the valve clearance applies only for checking, not adjusting

*BE05.30-N-1013-01B



*BA05.00-N-1002-01A



*000589109900

Feeler gauge

6

Remove cranking device (4) and install end cover (3) for inspection hole in timing case

If the engine was cranked using the turning device (4).



*BA01.60-N-1002-01A



*904589046300

7

Install cylinder head cover



Remove/install cylinder head cover

AR01.20-W-5014A

Number

Designation

Engine
904.9 up to
end no. 039739,

Engine
906.9 up to
end no. 041955 without code MS8

Engine
904.9 as of
end no. 039740,

Engine
906.9 as of
end no. 041956
without code MS8

BE05.30-N-1012-01B

Valve clearance

Inlet

mm

0.40

0.40

Outlet

mm

0.60

0.60

BE05.30-N-1013-01B

Test tolerance for valve clearance

Inlet

mm

-0.05/+0.05

-0.05/+0.05

Outlet

mm

-0.10/+0.10

-0.10/+0.10

Number

Designation

Engines
900.9, 902.9, 904.9, 906.9

BA01.60-N-1002-01A

Inspection hole closure cover to timing case

Nm

25

Number

Designation

Engine
904.9, 906.9

BA05.00-N-1002-01A

Jam nut on rocker arm adjustment screw

Nm

25

BA05.00-N-1003-01A

Jam nut on valve bridge adjustment screw

Nm

25