Maintenance9403−4/A1
Winterthur Gas & Diesel Ltd.
4/ 4
Table 1: Hydraulic Jacks − Values and Comparison
Position of
Pre-tensioning
Jack
Group Jack Tightening
Value (bar)
Comparison
(_( mm)
Number of
Turns to Set
the Jack /
Round Nut
Lubricating
Agent
1)
Main bearing 1132−1 94114B 1500 −
¾
Oil
Foundation bolt 1715−1 94145 1
st
step 900
then 1500
−
¼
No lubricant
Engine stays 1715−1 94145 310 −
¼
No lubricant
Tie rods 1903−1 94180 1500 From 100 to
1500 bar
13.0 to 14.5 mm
3 Molykote
paste G
Elastic studs −
cylinder cover
2708−2 94215A 1500
530_ 1½
Oil
Exhaust valve
cage
2751−1 94252 1500
155_ 1
Oil
Elastic stud − top
end bearing
3303−1 94315 1
st
step 1000
then 1500
1
st
to 2
nd
step
15_
½
Oil
Bottom connect-
ing rod
3303−1 94252 1
st
step 950
then 1500
1
st
to 2
nd
step
30_
1 Oil
Crosshead and
guide shoe
3326−1 94340 1
st
step 1000
then 1500
1
st
to 2
nd
step
80_
½
Oil
Piston head 3403−3 94340 1500
115_ ½
Oil
Elastic stud −
bottom end
bearing
3303−1 94314 1
st
step 950
then 1500
1
st
to 2
nd
step
30_
½
Oil
1)
For lubrication on threads and contact surfaces.
Hydraulic Pre-tensioning Jacks: General Instructions
2016
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