WinGD RT-flex50DF - Page 258

Maintenance3303−1/A1
Winterthur Gas & Diesel Ltd.
2/ 5
2. Loosening the stud of
bottom end bearing
1) Clean the threads of studs 4 and the
area around nuts 5.
2) Put the distance bushes 94314A on the
studs.
3) Attach and tighten the pre-tensioning
jacks 94314 with open vent screws 7
until there is only little or no clearance
at ’x’ (Fig. 3).
4) Screw back the pistons 8 by about ½
turn.
5) Connect the pre-tensioning jacks to
hydraulic unit 94942 as shown in Fig. 2.
6) Actuate the hydraulic unit until
bubble-free oil flows out through the
vent screws. Close the vent screws 7.
7) Actuate the hydraulic unit up to about
1530 bar and keep pressure constant.
Pistons 8 of the pre-tensioning jacks
must never exceed the red limiting
grooves ’BN’ (Fig. 3).
8) Use the round bar ’RS’ and screw back
the nuts 5 by one turn.
9) Release the pressure to ’0’ at the
hydraulic unit and then remove
pre-tensioning jacks.
2016
Loosening and Tensioning the Connecting Rod Studs
y y
6
6
94934
94934A
94935
x
RS
20000
701.013.428.dxf
013.428/05
94314A
7
94314
94935
BN
8
9
4
6
KO
94314A
013429/05
94942
5
Fig. 2
Fig. 3