R&M Materials Handling WIRE ROPE HOISTS Service - Manual (Page 90)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
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R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
4. Hook bearing set
5. Thrust bearing
6. Locking ring
7. Bearing housing
8. Side plate
9. Sheave bearing set
10. Rope sheave
12. Shaft locking
13. Rope sheave set
15. Sleeve
Disassembly:
• Lower the hook onto a stable working-platform. Pull with a gloved hand some extra rope down from
the drum, so that the hook-block is free. If needed, adjust the lower limit switch.
• Switch OFF the power supply to the crane.
• Remove the shaft locking parts (12).
• Extract the rope sheave set (13) from the shaft.
• Remove the sheave cover screws and remove the side plates (8).
• Remove bearing housing fixing screws (7).
• Remove the locking ring (6) and thrust bearing (5).
• Extract the hook (3) from the bearing set (4).
Re-assembly:
• Lubricate the thrust bearing and the hook shaft.
• Insert the hook (3) into the bearing house (4) and re-assemble the thrust bearing (5) and the locking
ring (6).
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• Insert the hook-assembly into the bearing housing (7) and tighten the fixing screws hand-tight.
• Re-assemble the side plates (8), the rope sheaves (10) and the shaft locking parts (12).
• Ensure that the sheaves rotate freely before tightening the bearing housing fixing screws to the
required torque.
• Switch ON the power supply to the crane.
• Raise the hook block. Carefully guide the rope with a gloved hand until the hook block hangs free
from the working platform.
• If the lower limit switch has been adjusted, re-adjust to the correct position.
• Test the operation of the hoist.