Measure valve setback to cylinder head

AR05.30-W-4100-01J

Measure valve setback to cylinder head

ENGINE

900.9 in MODEL 375.1, 970, 972, 975, 976

ENGINE

902.9 in MODEL 375.1, 970, 972, 974, 975, 976

ENGINE

902.9 in MODEL 375.3, 950.5/6, 952.5/6, 953.6, 954.5

ENGINE

902.9 in MODEL 957

without CODE MS8 (Natural gas engine)

ENGINE

924.9 in MODEL 970, 972, 974, 975, 976

ENGINE

925.9 in MODEL 970, 972, 974

ENGINE

926.9 in MODEL 949, 950.5/6, 952.5/6, 953.6, 954.5, 957

Shown on exhaust valve

1

 Attach dial indicator (1) to  dial indicator holder (2) and place with pretension on the face of the cylinder head (3)

2

Set scale on the  dial indicator (1) to "0".

3

 Push dial indicator holder (2) with  dial indicator (1) until the dial indicator (1) sits on the exhaust valve (4).

4

Read off measured value on  dial indicator (1) scale.

 The value read off is the valve set back (K); it must always be within the permissible tolerance.

5

Perform measuring procedure on the remaining intake valves and exhaust valves (4) in the same way.

6

 Place dial indicator holder (5) on the face of the cylinder head (3) and attach dial indicator (1) with  extension (8) in such a way on  dial indicator holder (5) that the tracer pin on the dial indicator (1) sits on the shaft end of the intake valve (7).

 Place  dial indicator (1) place with pretension on the shaft end of the intake valve (7).

7

Set scale on the  dial indicator (1) to "0".

8

 Push dial indicator holder (5) with  dial indicator (1) onto cylinder head (3) until tracer pin of  dial indicator (1) sits on shaft end of intake valve (6).

 Pull back the tracer pin on the  dial indicator (1) when moving.

9

Read off measured value on  dial indicator (1) scale.

 The read off measurement is the difference (J) between the intake valves (6, 7). The difference (J) must lie within the permissible tolerance.

10

Perform measuring procedure on the remaining intake valves (6, 7) in the same way.