Maintenance
9403−3/A1
RT-flex58T-E
Winterthur Gas & Diesel Ltd.
1/ 9
1. General
The hydraulic pre-tensioning jacks forming part of the engine tool kit are to be
stored in their tool boxes when not in use, in a clean place, where they are pro-
tected from damage (after greasing them and closing the connections with dust
plugs). We recommend to always keep in stock a sufficient number of new back-up
and O-rings of the specified quality and dimensions.
Always pay attention to the correct position when fitting new back-up and
O-rings as shown on the following pages.
When inserting new back-up and O-rings proceed with care to avoid their damage;
do not use any sharp edged utensils for assistance!
Heat uncut back-up rings in boiling water before fitting them.
1.1 Dimensions of back-up and O-rings
Tool
No.
Place of application of
pre-tensioning jack
Part Back-up ring
uncut (*cut)
O-ring
Dimension [mm]
o∅ x i∅ x t i∅ x s
94114 Elastic bolts to main bearing piston
cylinder
109 x 99.6 x 1.7 *
79.9 x 70.5 x 1.7 *
97.79 x 5.33
69.22 x 5.33
94145 Foundation bolt and engine stay piston
cylinder
117 x 107.6 x 1.7
94.4 x 85 x 1.7
104.14 x 5.33
85.09 x 5.33
GF 94180 Tie rod piston
cylinder
183 x 170.8 x 2.5
127.4 x 118 x 1.7
164.47 x 6.99
116.84 x 5.33
CF 94215 Elastic bolt to cylinder cover piston
cylinder
140.5 x 128.3 x 2.5
99.4 x 90 x 1.7
126.37 x 6.99
91.44 x 5.33
94252 Elastic bolt to exhaust valve cage piston
cylinder
185 x 172.8 x 2.5
107.4 x 98 x 1.7
170.82 x 6.99
97.79 x 5.33
94314 Elastic bolt to bottom end bearing piston
cylinder
150 x 137.8 x 2.5
109.4 x100 x 1.7
135.89 x 6.33
100.97 x 5.33
94315 Elastic bolt to top end bearing piston
cylinder
115 x 105.6 x 1.7
84.4 x 75 x 1.7
104.14 x 5.33
75.57 x 5.33
94340 Elastic bolt to piston rod foot piston
cylinder
85 x 75.6 x 1.7
64.4 x 55 x 1.7
75.57 x 5.33
56.52 x 5.33
O-ring
t
i∅o∅
i∅o∅
Back-up ring
s
2015-08
Hydraulic Pre-tensioning Jacks
Storing, Servicing and Maintenance
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