Maintenance
4103−3/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
5/ 5
The waisted studs are correctly pretensioned if an extension of nL 1.20± 0.06
mm is measured.
Check: There must be no gap in the gear wheel partition.
⇒ If the split pin for securing the castle nut cannot be fitted, turn the castle nut
only so far as to allow the split pin to be fitted.
⇒ After the check mentioned above has been carried out, dismantle both flange
screws 6 which have been temporarily fitted beforehand (Fig. ’H’).
Degrease the threads of all flange screws 6 and their self-locking nuts 8 and then
apply LOCTITE 262 to them; do not use MOLYKOTE!
⇒ Fit all flange screws 6 with distance sleeves 7 and self-locking nuts 8 (Fig. ’I’).
Afterwards, tighten them crosswise and evenly distributed over the circumfer-
ence with an angle of twist of 70_ (800 Nm).
After assembling, check intermediate wheel as specified in 4103−1.
Remark: After fitting 2-part gear wheel, the running and backlash clearances and
performance of the teeth must be checked (see 4103−1).
I
MOLYKOTE
LOCTITE
262
013.640/0
I - I
1
6
78
94412
013.630/05
I
10 3
3/4
2
I
Replacing the Gear Wheel on the Crankshaft
2010
CHECK
CHECK
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