WÄRTSILÄ RT-flex50-D, Maintenance Manual

Page: 173 / 522

Maintenance
2708−1/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
1/ 3
Tools: Key to Illustrations:
1 Suspension device 94265 1 Cylinder cover 8 Joint ring
2 Spec. eye nuts 94265a 2 Water guide jacket 9 Antipolishing ring
3 Exhaust valve cage 10 O-ring
4 Stud of exhaust valve cage 11 O-ring
5 Lower water guide jacket
6 Screw
7 Transition tube
HU Wooden underlay
Overview
1. General 1/3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Removal of cylinder cover 1/3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. Fitting of cylinder cover 1/3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. Removal of water guide jacket 3/3 . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Fitting of water guide jacket 3/3 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. General
Risk of accident! The cylinder cover may be lifted or transported only with tools
94265 and 94265a as shown in Fig. ’B’ and ’C’.
2. Removal of cylinder cover
⇒
Drain the cylinder cooling water (see Operating Manual 8017−1).
⇒
Disconnect all the connections to the cylinder cover and to the exhaust valve
as well as the expansion piece between exhaust valve and exhaust manifold.
⇒
Loosen and remove the nuts of the cylinder cover studs (see 2708−2 ).
⇒
Screw spec. eye nuts 94265a onto the studs 4 of the exhaust valve cage.
⇒
Lift complete cylinder cover 1 with the crane and suspension device 94265
(see Fig. ’C’).
3. Fitting of cylinder cover
Before placing the cylinder cover in position the following points must be taken
care of:
D
The compression space must be absolutely free of foreign particles or dirt.
D
The seating surfaces on cylinder cover and cylinder liner must be clean and
undamaged.
D
A new soft iron joint ring 8 of 2 mm thickness must be placed on the cylinder
liner in such a way that it lies flat all over.
D
The inner surface of water guide jacket 2 which is screw fastened to the cylin-
der cover as well as the respective guide surface at the collar of the lower wa-
ter guide jacket must be clean and smeared with oil.
Cylinder Cover
Removal and Fitting of Cylinder Cover and Water Guide Jacket
2010