Maintenance
1715−1/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
2.
Checking the pre-tension
⇒
Clean the threads of the screws and the seating surfaces. Subsequently apply
MOLYKOTE G paste to the threads.
⇒
Place pre-tensioning jack 94145 on the screw to be checked, and screw it
completely down with vent screw 6 open until there is only little or no clearance
at ’x’ (Fig. ’B’).
⇒
Connect pre-tensioning jack to HP oil pump 94931 as shown in Fig. ’B’.
⇒
Shut relief valve ’EV’ and actuate HP oil pump till oil flows bubble-free at vent
screw 6.
⇒
Close vent screw, tension the foundation bolt with 310 bar and keep pressure
constant.
Check with feeler gauge through slot ’KO’ if there is any clearance between nut 4
and its seating.
⇒
If there is no clearance, this means that the tensioning condition of the screw
has remained unchanged since the last check. The pressure can be released
to zero and the pre-tensioning jack removed.
Should a clearance be found, nut 4 must be tightened down onto its seating
with round bar ’RS’ while the pressure is kept at 310 bar (check with feeler
gauge). Subsequently lower the pressure to zero.
B
6
1
94931
EV
94935
94934a
94934a
3
x
012.902/05
5
2
4
8
BN
RS
KO
3.
Loosening the screws
If the screws must be loosened, first screw on pre-tensioning jack 94145 complete-
ly, then loosen it by about
½
turn. Afterwards tension the screw with 330 bar, and
turn nut 4 back by one turn.
Pistons 3 of the pre-tensioning jacks must never exceed red limiting grooves ’BN’.
Engine Stays with Friction Shims: Checking the Pre-tension
2010
CHECK
Содержание RT-flex50-D
Страница 2: ...This page is intentionally left blank...
Страница 4: ...This page is intentionally left blank...
Страница 6: ...This page is intentionally left blank...
Страница 8: ...This page is intentionally left blank...
Страница 10: ...This page is intentionally left blank...
Страница 16: ...This page is intentionally left blank...
Страница 20: ...This page is intentionally left blank...
Страница 30: ...This page is intentionally left blank...
Страница 56: ...This page is intentionally left blank...
Страница 78: ...This page is intentionally left blank...
Страница 82: ...This page is intentionally left blank...
Страница 86: ...This page is intentionally left blank...
Страница 94: ...This page is intentionally left blank...
Страница 98: ...This page is intentionally left blank...
Страница 102: ...This page is intentionally left blank...
Страница 106: ...This page is intentionally left blank...
Страница 124: ...This page is intentionally left blank...
Страница 140: ...This page is intentionally left blank...
Страница 142: ...This page is intentionally left blank...
Страница 144: ...This page is intentionally left blank...
Страница 154: ...This page is intentionally left blank...
Страница 158: ...This page is intentionally left blank...
Страница 176: ...This page is intentionally left blank...
Страница 180: ...This page is intentionally left blank...
Страница 182: ...This page is intentionally left blank...
Страница 194: ...This page is intentionally left blank...
Страница 204: ...This page is intentionally left blank...
Страница 214: ...This page is intentionally left blank...
Страница 220: ...This page is intentionally left blank...
Страница 224: ...This page is intentionally left blank...
Страница 228: ...This page is intentionally left blank...
Страница 240: ...This page is intentionally left blank...
Страница 244: ...This page is intentionally left blank...
Страница 252: ...This page is intentionally left blank...
Страница 270: ...This page is intentionally left blank...
Страница 276: ...This page is intentionally left blank...
Страница 284: ...This page is intentionally left blank...
Страница 302: ...This page is intentionally left blank...
Страница 310: ...This page is intentionally left blank...
Страница 312: ...This page is intentionally left blank...
Страница 320: ...This page is intentionally left blank...
Страница 326: ...This page is intentionally left blank...
Страница 330: ...This page is intentionally left blank...
Страница 342: ...This page is intentionally left blank...
Страница 344: ...This page is intentionally left blank...
Страница 348: ...This page is intentionally left blank...
Страница 350: ...This page is intentionally left blank...
Страница 360: ...This page is intentionally left blank...
Страница 364: ...This page is intentionally left blank...
Страница 370: ...This page is intentionally left blank...
Страница 378: ...This page is intentionally left blank...
Страница 382: ...This page is intentionally left blank...
Страница 386: ...This page is intentionally left blank...
Страница 390: ...This page is intentionally left blank...
Страница 398: ...This page is intentionally left blank...
Страница 410: ...This page is intentionally left blank...
Страница 412: ...This page is intentionally left blank...
Страница 418: ...This page is intentionally left blank...
Страница 426: ...This page is intentionally left blank...
Страница 436: ...This page is intentionally left blank...
Страница 442: ...This page is intentionally left blank...
Страница 444: ...This page is intentionally left blank...
Страница 468: ...This page is intentionally left blank...
Страница 472: ...This page is intentionally left blank...
Страница 482: ...This page is intentionally left blank...