SCHUNK WBL 85 Balfour Beatty, Maintenance And Operating Manual

Page: 17 / 56

Maintenance
Single Arm Pantograph WBL 85 Balfour Beatty
Page 17 WBL 85-15kV
7.4 Screw Connections
All mounting screws are to be checked for damage and tight fit, especially:
- Mounting screws for carbon strips.
- Pan Head connections.
Hex nuts according DIN 985 must be replaced by new ones after dismounting !
7.4.1 Fastening Moment for Screw Connections
7.5 Bellow Drive
The bellow drive is maintenance free.
Check bellow drive for operation during each main inspection by lifting and lowering
the pantograph. If needed, replace damaged or bent parts.
The cables are to be greased with TOP 2000 of AGIP Schmiertechnik, if necessary.
7.6 Pneumatic Control Unit
During each main inspection the safety valve needs to be tested by increasing the
pressure through the pressure regulator.
After completed test, adjust contact pressure to required level.
Thread Fastening
Moment
M3 1,1 Nm
M4 2,6 Nm
M5 5,1 Nm
M6 8,8 Nm
Thread Fastening
Moment
M8 21,4 Nm
M10 44,0 Nm
M12 74,0 Nm
M14 119,0 Nm
Thread Fastening
Moment
M16 183,0 Nm
M20 370,0 Nm