Winterthur Gas X40-B, Maintenance Manual

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Maintenance
9403 − 4/A1
Winterthur Gas & Diesel Ltd.
2/ 4
2. Release the Tension
2.1 Version 1 − Preparation
1) Make sure that the vent screw (6) is open (see Fig. 1 ).
2) Put the hydraulic jack on to the elastic stud (5).
3) Turn the hydraulic jack until it is tight. Make sure that there is no clearance at X.
2.2 Version 2 − Preparation
1) Make sure that the vent screw (6) is open (see Fig. 2 ).
2) Put the hydraulic jack over the elastic stud (5).
3) Use the round bar to lightly tighten the round nut (3).
2.3 Procedure
1) Turn back the round nut (3), or the hydraulic jack (see the Table below).
2) On the HP oil pump, close the relief valve.
3) Connect the hydraulic jack to the HP oil pump or the hydraulic unit.
4) Put a hose on the vent screw 6 and a container below the hose to drain the oil.
5) Operate the HP oil pump.
6) Close the vent screw (6) when oil that has no air flows out.
Note: Do not move the piston (2) above the limit of the red groove (9).
7) Operate the HP oil pump to slowly increase the pressure to approximately 20 bar
to 30 bar more than the value give in Table 1.
8) Keep the pressure constant and use the round bar to loosen the round nut (see
the Table below).
9) On the HP oil pump,or hydraulic unit, decrease the pressure to zero.
10) Remove the hydraulic jack.
Version 1
016.696/08
x
6
7
2
1
10
8
5
4
9
APPLY TENSION RELEASE TENSION
Version 2
016.697/08
x
10
5
4
7 6
2
1
8
3
9
APPLY TENSION
Fig. 1 Fig. 2
RELEASE TENSION
2016
Hydraulic Pre-tensioning Jacks: General Instructions