Maintenance
1112−1/A1
Winterthur Gas & Diesel Ltd.
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3. Foundation Bolts − Loosen
If all foundation bolts must have tension applied again, start with the studs at the
driving end and continue from one side to the other side to the free end of the engine.
1) Attach the pre-tensioning jack (94145) on the foundation bolt (5, Fig. 5).
2) Turn the pre-tensioning jack (94145) fully down.
3) Turn back half a turn the pre-tensioning jack (94145) to get the clearance (4).
4) Connect the pre-tensioning jack (94145) to the HP oil pump (94931).
5) Open the vent screw (9).
6) Close the relief valve (10).
7) Operate the HP oil pump (94931) until oil that has no air flows from the vent
screw (9).
8) Close vent screw (9).
9) Operate the HP oil pump (94931) to get a pressure of 1530 bar.
Note: Do not move the piston (1) of the pre-tensioning jack (94145) above the
red groove (2).
10) Turn the nut (8) back one turn.
11) Open the relief valve (10) to release the pressure to zero.
12) Remove the pre-tensioning jack (94145).
012.950/05
94935
94934A
94931
10
94934A
8
7
9
4
5
1
6
2
3
Fig. 5
2016
Bedplate and Thrust Bearing
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