Maintenance
1132
−
1/A1
RT-flex58T-D
Winterthur Gas & Diesel Ltd.
Tools:
Key to Illustrations:
2 Double pre-tensioning jacks
94114
1 Elastic stud
1 Assembly tool
94114A
2 Main bearing cover
1 Feeler gauge
94122
3 Nut
1 Special feeler gauge
94123
4 Nut
1 Hydr. distributor
94932
5 Piston
1 Connection block
94934
6 Cylinder
3 HP hoses
94935
7 Cover
1 Hydraulic unit
94942
8 Main bearing girder
9 Suspension hole
KO Slot
RS Round bar
1.
General
The double pre-tensioning jacks 94114 must always be used for loosening and for
tensioning of elastic studs 1 for the main bearing.
Attention!
Thereby device 94111 for removal and fitting of main bearing cover 2
must not be installed (see
).
Prior to screwing the nuts onto the elastic studs, threads and the nut seating sur-
faces must be clean. Apply oil to the threads. Pay attention to the free movement of
the nuts.
Remark:
Pay attention to General Application Instructions
for hydraulic
pre-tensioning jacks.
2.
Loosening the elastic studs
⇒
Hook assembly tool 94114A into suspension holes 9 of double pre-tensioning
jacks 94114 and place the latter onto elastic studs 1 for the main bearing (Fig.
’C’).
⇒
Connect both double pre-tensioning jacks by HP hoses 94935, connection
block 94934 and hydraulic distributor 94932 with hydraulic unit 94942 (ar-
rangement see Fig. ’C’).
⇒
Screw on nuts 4 of the double pre-tensioning jacks until pistons 5 fully seat on
cylinders 6 (Fig. ’B’).
The pistons are fully down on the cylinders when distance ’L’ is about 23 mm, mea-
sured from the top of the piston to the upper edge of cover 7.
Check the oil level in hydraulic unit 94942.
⇒
Subsequently loosen all nuts 4 by about
¾
to one turn.
⇒
Raise the pressure to
1500 bar
(max. 1600 bar) at the hydraulic unit.
⇒
Unscrew nuts 3 by one turn with round bar ’RS’.
⇒
Release pressure to zero at the hydraulic unit and then remove both double
pre-tensioning jacks.
Main Bearing
Loosening and Tensioning of Elastic Studs
2013
CHECK
Summary of Contents for WARTSILA RT-flex58T-D
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