Maintenance
1112−1/A1
RT-flex58T-D
Winterthur Gas & Diesel Ltd.
3/ 3
3. Loosening of the foundation bolts
⇒ First screw down pre-tensioning jack 94145 as for checking the pre-tension,
then turn back by ½ turn (gap ’SA’).
⇒ Connect the pre-tensioning jack with HP oil pump 94931. Fit plug piece
94934E on one side of Hydr. distributor 94934A.
⇒ Close relief valve ’EV’ and actuate HP oil pump until oil flows bubble-free at
vent screw 12.
⇒ Close vent screw and pump until a pressure of 1020 bar has been reached.
Control pin 11 must always protrude over the top edge of piston 14. When the con-
trol pin is flush with the top edge of the piston, the maximum stroke of the piston is
reached. Therefore do not continue to operate the pre-tensioning jack!
⇒ Turn back nut 6 by one turn, and release the pressure to zero.
Remove the pre-tensioning jack.
E
002.853/99
12
13
11
94935A
94935
94934A
94934E
94931
EV
94932
6
KO
1
2,3,4
4. Tensioning of the foundation bolts
D Tensioning of the foundation bolts must be carried out in two steps. Tension all
foundation bolts first with 600 bar (1
st
step), then finish tension them with 1000
bar (2
nd
step).
D Tensioning must be carried out as described above, in ’Checking of the pre-
tension’.
Control pin 11 must always protrude over the top edge of piston 14. When the con-
trol pin is flush with the top edge of the piston, the maximum stroke of the piston is
reached. Therefore do not continue to operate the pre-tensioning jack!
Checking the Foundation Bolts
2013
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