Maintenance1112−1/A1
Winterthur Gas & Diesel Ltd.
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2. Checking the pre-tension
1) Clean the threads of the foundation bolts (2, Fig. 3) and the seating surfaces.
2) Attach the pre-tensioning jack (94145, Fig. 1) to the foundation bolt (2, Fig. 3)
3) Screw the foundation bolt (2) completely down with the opened vent screw (5), until
there is only little or no clearance at ’x’.
4) Connect the pre-tensioning jack (94145) to the HP oil pump (94931), refer to
9403−2.
5) Set the relief valve (EV) to off and actuate the HP oil pump (94931) until the oil flows
bubble-free at the vent screw (5).
6) Close the vent screw (5) and and tension the foundation bolt (2) to 1500 bar and keep
the pressure constant.
7) Do not move the piston (1) fo the pre-tesnioning jack (94145) further up than to the
red limiting groove (BN).
8) Use the feeler gauge (94122) and put it through the slot (KO). Check if the is any
clearance between the nut (4) and the distance sleeve (3).
9) If there is a clearance between the nut (4) and the distance sleeve (3), keep the
pressure of 1500 bar and use the round bar (RS) to tighten it completely down.
10) Subsequently lower the pressure to zero and remove the pre-tensioning jack
(94145).
RS
KO
2
1
94931
012.949/05
4
3
BN
5
WCH02899
EV
Fig. 3:
x
Bedplate and Thrust Bearing
2015
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