OPERATING CONTROLS AND PROCEDURES OPERATOR MANUAL 500E2
3-12 Published 07-26-2019 Control # 111-06
The retract cables attach to the tip end of the 1
st
boom
section and are reeved around sheaves attached to the 2
nd
boom section. They are attached to the base end of the 3
rd
boom section providing retraction of the 3
rd
boom section.
This type of boom operation ensures that the 2
nd
and 3
rd
section booms extend and retract equally. Proper service
and maintenance is required to insure smooth and proper
operation
Anti-two-block Weight Installation
To prevent the hoist cable from slipping out of the ant-two-
block weight, rig the weight as shown below.
INSTALLING CABLE ON THE HOIST
NOTE: The cable should preferably be straightened before
installation on the hoist drum.
Install cable on the hoist drum in accordance with the
following procedure.
1. Position the cable over the boom nose sheave and route
to the hoist drum.
2. Position the hoist drum with the cable anchor slot on top.
3. Insert the cable through the slot and position around the
anchor wedge (1) Figure 3-1.
NOTE: The end of the cable should be even with the
bottom of the slot for the anchor wedge.
4. Position the anchor wedge in the drum slot; pull firmly on
the free end (2) of the cable to secure the wedge.
NOTE: If the wedge does not seat securely in the slot,
carefully tap (3) the top of the wedge with a mallet.
5. Slowly rotate the drum, ensuring the first layer of cable is
evenly wound onto the drum.
6. Install the remainder of the cable, as applicable.
WEDGE SOCKET INSTALLATION
1. Inspect the wedge and socket. Remove any rough
edges and burrs.
2. The end of the wire rope should be seized using soft, or
annealed wire or strand. If the end of the rope is welded,
the welded end should be cut off. Do not weld on size
6×37 rope. This will allow the distortion of the rope
strands, caused by the bend around the wedge, to
adjust themselves at the end of the line. Refer to
SECTION 1 - INTRODUCTION in the Service Manual
for wire rope procedures.
CAUTION
If cable is wound from the storage drum, the reel should
be rotated in the same direction as the hoist.
The anti-two-block chain must be
installed between the slot in the
weight and the hoist cable.
Anti-two-block Weight
Hoist
Cable
Slot
Chain Length
16 inches (40 cm) Do
not shorten the chain.
Upper Link
Lower Link
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