Valve clearance
Inspection / Adjust
A5.05. 01.01.01.02
1500
M20
en / 30.09.2010 IB025384 1/2
01
See also: 02.01.01.nn
Spare parts list: B1.05.01.2.2107
Time requirement: 1 Pers./ 0,50 h
Personnel qualification: skilled engine hand
--------------------------------------------------------------------------------------------------------------------------------
Operating medium: Heavy fuel and distillate fuel
Inspection:
Check valve clearance,
adjust if necessary every 1.500 h
Tools:
Feeler gauge W1 * 1.9075-003
Turning rod W2 * 2.9100-380
* not illustrated
Sequence of operations:
1. Adjust valve bridge.
1.1 Open the decompression valve.
1.2 Remove the cylinder head covers.
1.3 Move the cylinder to be adjusted to firing TDC. Inlet and exhaust valves are closed, rocker arm
relieved.
1.4 Release valve bridge (1) of rocker arm (5).
Enlarge clearance „s“ and/or flap back rocker arm (5).
NOTE
The valve clearance should only be measured when the engine is warm, i.e. 15 min.
after the engine is shut down.
The position of the valve bridge must be readjusted before adjusting the valve
clearance during scheduled inspections or due to work being carried out on the valve
drive components.
NOTE
The adjustment is necessary so that the clearance “s“ of the valve bridge (Fig.1/1) is
distributed evenly onto the corresponding valve cones (2,3).
There must be a sufficient clearance ”s” between the valve adjusting screw (4) and
the valve bridge (1) when adjusting the valve bridge.
To Next Page
Loading...