MAINTENANCE 1400H OPERATOR AND SERVICE MANUAL
3-6 Published 10-30-2014 Control # 040-09
lifting ropes. High strength, rotation resistant is preferred and
furnished standard by National Crane. This rope eliminates
single part line load spin. It also eliminates load block spin up
when multi-part reeving is used which results in prolonged
rope life.
Wire Rope Installation
1. Unspool approximately 40 ft (12 m) of cable and route
the cable through the boom cable guides block at the
front of the boom back to the hoist. Install one end of the
loadline cable into the hoist drum using the wedge
socket provided. See Hoist Service Manual in the
“Service and Maintenance” Section for proper
placement of the wedge socket with 5/8 in diameter wire
rope. Remove the top pin from the sheave case and lay
the cable over the right sheave as viewed from sheave
case. Replace pin and spring clip. Start truck from crane
cab with PTO engaged. Program RCL and turn crane
power switch on. With crane outriggers extended and
set, unspool the remainder of the cable [approximately
350 ft (100 m)] out from the truck being sure the cable is
straight and without kinks. Attach wedge socket as
shown in the Loadline Section. Torque cable clamp (clip)
to 95 lb-ft (128 Nm). This torque must be rechecked after
initial operation of crane. Be sure cable clamp is
attached to the free end of the cable only. Special care
should be taken to reeve the cable through the wedge
socket as shown in following figure.
2. Spool the loadline onto the hoist drum while maintaining
approximately 500 lb (226 kg) of tension on the cable
(attaching a small vehicle to the end of the loadline with
another person lightly riding the vehicle brakes while the
cable is spooling on the drum will accomplish this).
Verify that the first wrap of cable is properly seated in the
grooves of the hoist drum. Continue winding the cable
on the second, third and fourth layer of the drum. Keep
the cable paying in straight to the boom to avoid side
loading the boom. The second, third and fourth layers
will wrap smoothly guided by the first layer wrapping.
After cable is completely wrapped on drum, remove
lower pin and retain cable in right sheave as viewed from
sheave case.
LIVE END
DEAD END
DEAD END
LIVE END
ENTERING
WRONG SIDE
NOT LONG
ENOUGH
20 × ROPE DIA.
(MINIMUM)
CORRECT
INCORRECT
To Next Page
Loading...
