Harrington Hoists and Cranes HPC 500 End Truck - Manual (Page 17)

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- Ensure that the “H” dimension is correct as determined in step 3.3.5 above, and tighten the
fasteners by applying 75 ft-lb of torque.
 Top Running – apply the following steps for each end truck:
- Ensure that the “H” dimension is correct as determined in step 3.3.5 above, and tighten the
fasteners by applying 75 ft-lb of torque.
- Place the end truck onto the runway rail (or square bar) in accordance with the Top Running
part of Figure 3-8.
- Since the end truck will not stay balanced on the runway in this condition, temporarily support it
so that it stays safely balanced in position until the bridge beam is installed.
3.3.7 Bridge Beam Installation – This step covers the installation of the bridge beam onto the end trucks.
 Underhung – As shown in Figure 2-2 for Underhung cranes, the bridge beam is attached to the
under side of the end trucks.
- Attach the bridge beam to the under side of the end trucks in accordance with the Underhung
part of Figure 3-10. Do not yet fully tighten the fasteners.
- Ensure the crane is square in accordance with Figure 3-11 and proceed to fully tighten the
fasteners by applying 75 ft-lb of torque.
 Top Running – As shown in Figure 2-2 for Top Running cranes, the bridge beam is attached to the
upper side of the end trucks.
- Attach the bridge beam to the upper side of the end trucks in accordance with the Top
Running part of Figure 3-10. Do not yet fully tighten the fasteners.
- Ensure the crane is square in accordance with Figure 3-11 and proceed to fully tighten the
fasteners by applying 75 ft-lb of torque.
HEX-HEAD
CAP SCREW
TAPER
WASHER
HEX NUT
FLAT WASHER
HEX NUT
UNDERHUNG
BRIDGE
BEAM
END TRUCK
FRAME
4 PER
END
TRUCK
4 PER
END
TRUCK
HEX-HEAD
CAP SCREW
TAPER
WASHER
HEX NUT
FLAT
WASHER
HEX NUT
TOP RUNNING
4 PER
END
TRUCK
4 PER
END
TRUCK
END TRUCK
FRAME
BRIDGE
BEAM
Figure 3-10 Bridge Beam Installation – Attaching the Bridge Beam to the End Truck