Maintenance
1112−1/A1
Winterthur Gas & Diesel Ltd.
1/ 2
Foundation Bolts − Check
Tools:
1 Feeler gauge 94122 2 Hydr. distributors 94934A
1 Pre-tensioning jack 94145 1 HP hose 94935
1 HP oil pump 94931
1. General
The pre-tension of the foundation bolts (holding down studs) must be checked at
longer intervals e.g. during overhauls, refer to 0380−1.
In the area of the thrust bearing (see Fig. 1), the bedplate and the foundation must be
fastened with foundation bolts (1), a distance sleeves (2) and bushes (3).
The remaining area is fastened with foundation bolts (1, Fig. 2) and the distance sleeve
(2).
1.1 Loosening or tensioning the foundation bolts
The tensioning of all foundation bolts starts at the driving end, continues alternately
from one side to the other side and finishes at free end of the engine.
1) For loosening and tensioning the foundation bolts (1), use the pre-tensioning jack
(94145, Fig. 1).
2) Connect the pre-tensioning jacks (94145) to the hydraulic pump (94931, Fig.3), refer
to 9403−2.
3) Do the procedure for loosening and tensioning ’Variant 1’ as im 9403−4.
4) Do the tensioning in two steps: for both metal chocks or epoxy resin chocks, i.e. first
apply tension to all foundation bolts to 1000 bar (1
st
step), then finish to 1500 bar
(2
nd
step).
1
2
WCH02899
Fig. 1: Fig. 2:
2
3
1
94145
WCH02899
Bedplate and Thrust Bearing
2015
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