Harrington Hoists RHN02D-20A-20D Series, Owner'S Manual

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6.5.3 After commissioning a new wire rope hoist, or after replacing the rope, the rope of multi-fall hoists may
twist. This can be seen from the bottom hook block turning, particularly when unloaded.

Twisting in the rope prejudices safety and service life. Remove any twists!
Regularly inspect the rope for twisting and follow the procedure in Table 5-5 “Wire Rope-Twisting” and
other corresponding Wire Rope sections in Table 5-5 .
6.5.4 Wire Rope Removal/Rope Guide Replacement
1)

The hoist must be properly powered and operational in order to perform the following
procedures.
2)

When replacing Wire Rope, check for wear on mating parts, i.e. Drum, Sheaves, Hook
Block Sheaves and replace if necessary.
3) Lower the Hook Block to the lowest possible position without touching the floor or ground.
4) Remove the Wire Rope Clamp (G) and loosen the Wire Rope until the Terminal Wedge (H) can be removed
from the Anchorage Assembly (F) (see
Figure 6-4 ).
Figure 6-4
5) Remove (unreeve) the Wire Rope from the Bottom Block and all Sheaves.
6) Remove the rope guide

Unscrew protective plate (1) under the rope drum at points (a). The rope guide can then be rotated freely.
For RHN02-RHN10 models see Figure 6-5 ; for RHN15 & RHN20 models see Fig 6-6.


Danger of bodily injury or material damage - Do not unscrew stop with bearing
(2)! The stop with bearing (2) is locked with a conical spring washer. This must be refitted correctly.
See Figure 6-5.

Unscrew screws (3). See Figure 6-7.

Remove half-rings.

Unhook rope tensioning spring.
7) Unscrew the fixing screws in the clamping plates on the rope drum (see Figure 6-8 )