WÄRTSILÄ RT-flex50-D Maintenance

RT-flex50-D
Cylinder Cover
Loosening and Tensioning of Cylinder Cover Waisted Studs
Tools:
1 Hydr. tensioning device
consisting of:
8 Pre-tensioning jacks
2 Connection pieces with HP hoses
1 Connection block
1 Hydr. distributor
3 HP hoses
1 Hose
1 Hydraulic unit
1. General
2. Set-up of pre-tensioning jacks
3
RS
SA
Winterthur Gas & Diesel Ltd.
Maintenance
94215
94215a
94215b
94934
94934a
94935
94935c
94942
The instructions in
jacks for screwed fastenings must be followed.
Should a cylinder cover stud have to be replaced, please observe the indication in
2751−1.
A
6
4
5
2
1
012.963/05
Key to Illustrations:
1 Cylinder cover stud
2 Nut
3 Vent screw
4 Piston
5 Cylinder
6 Connection piece
7 Sealing ring
9403−4 concerning the application of hydraulic pre-tensioning
⇒ Clean the threads of all cylinder cover studs 1
and the area around nuts 2.
Remark: Set-up of pre-tensioning jacks 94215a
may be carried out either with opened vent screws
3 or by joining hose 94935c to connection piece 6.
However, in the second case the squeezing oil
must be collected in a receiver!
⇒ Place all pre-tensioning jacks on the cylinder
cover studs and screw them down one by one
until there is only little or no clearance at 'x'.
⇒ Turn back the pre-tensioning jacks by about
one turn (gap 'SA').
1/9
2708−2/A1
BN Limiting groove
KO Slot
RS Round bar
SA Gap
2010