Valve Clearance
Inspection / Adjust
A5.05. 01.01.01.00
1500
M20
en / 30.09.2010 IB021028 2/2
01
1.4 Adjust a sufficiently large clearance “s”
between the valve rocker (Fig. 1/1) and/or
valve bridge by folding back the valve
rocker (1) and/or by adjusting the valve
adjusting screw (2).
1.5 Loosen counternut (Fig. 2/3) and unscrew
the adjusting screw (4) until there is
sufficient clearance when the valve bridge
is tipped in the direction of rotation “a”.
1.6 Tilt the valve bridge in the direction of
rotation “b” and screw the adjusting screw
(Fig. 3/4) into the valve bridge until the
valve bridge has contact at both valves.
Tighten counternut (3).
2. Adjust the valve clearance.
2.1 Measure the clearance (Fig. 1/S) by
means of a feeler gauge. Thereby, press
the pushrod down.
2.2 Correct clearance “s”.
2.2.1 Loosen counternut.
2.2.2 Turn the square of the valve adjusting
screw (2) until the prescribed clearance is
obtained.
2.2.3 Retighten the counternut to fix the position
of the adjusting screw.
2.2.4 Recheck the clearance after the
counternut is tightened.
NOTE
During tightening of the coun-
ternut, the adjusting screw (4)
turns back so far that an equal
gap between valve bridge and
both valves is obtained.
To Next Page
Loading...