Wartsila RT-flex50-D - Setting of Damper; Determining of Total Thickness ’H’ of the Shims

Maintenance
2751−2/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
7/ 9
3.4 Setting of damper
Setting of damper 33 is necessary only after a valve spindle or valve seat has been
replaced, and after one of the valve seating faces has been ground. Setting is to be
carried out, after assembling of the exhaust valve as shown in Fig. ’H’.
Check bores ’BO’ (Fig. ’B’) in the damper for free passage.
3.5 Determining of total thickness ’h’ of the shims
⇒ Remove damper 33.
⇒ Determine with depth gauge 94126 measure ’H’ from the edge of upper hous-
ing 5 to the bottom of the damper bore in inside piston 7; for this the exhaust
valve must be closed (check with feeler gauge whether the valve plate lies
against the valve seat without clearance).
D The total thickness ’h’ of shims 34 assigned to measure ’H’ is shown in the
following table:
± 0.5
H
34
H
h
5
7
016.599/08
94126
Measure ’H’ Total
± 0.5 mm
thickness ’h’
131 mm
1 mm
130 mm
2 mm
129 mm
3 mm
128 mm 4 mm
127 mm
5 mm
⇒ Fit damper 33 and shims 34 with dete
r-
mined total thickness.
Single shim rings of 1 mm are available
.
2011-12
E
xhaust Valve: Dismantling and Assembling
CHECK