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8 MHD56109 - Edition 9
LUBRICATION
General
Thread lubricant or an anti-seize compound use is recommended
for threaded shafts, capscrews and nuts. Unless otherwise stated,
remove old lubricant, clean part with an acid free solvent and
apply a new coating of lubricant to part before assembly.
Gear
Remove prevailing torque type nut (60) on side of hoist opposite
hand lever and remove gear case assembly (1). Remove old
grease and replace with new. For temperatures -29° to 10° C use
EP 1 grease or equivalent. For temperatures -1° to 49° C use EP 2
grease or equivalent.
Load Chain
WARNING
• Failure to maintain clean and well lubricated load chain may
result in chain failure causing injury, death or substantial
property damage.
1. Lubricate each link of chain weekly. Apply new lubricant
over existing layer.
2. In severe applications or corrosive environments, lubricate
more frequently than normal.
3. Lubricate hook and hook latch pivot points with same
lubricant used on load chain.
4. To remove rust or abrasive dust buildup, clean chain with an
acid free solvent. After cleaning, lubricate chain.
5. Use Ingersoll Rand LUBRI-LINK-GREEN® or a SAE 50
to 90W EP oil.
TROUBLESHOOTING
This section provides basic troubleshooting information. Specific causes to problems are best identified by thorough inspections performed
by personnel instructed in safety, operation and maintenance of this equipment. The chart below provides a brief guide to common hoist
symptoms, probable causes and remedies.
.
SYMPTOM CAUSE REMEDY
Hoist will not hold
rated load.
Brake may be slipping. Inspect and adjust or repair as described in “INSPECTION” and “MAINTE-
NANCE” sections.
Hoist will not lift
load.
Excess slack in load chain. Pull down on load chain while ratcheting until slack is removed and hoist
begins lifting load. Refer to “OPERATION” section.
Hoist is overloaded. Reduce load to within rated capacity.
Hoist is in NEUTRAL (N) mode. Ensure selector lever is in UP position. Refer to “OPERATION” section.
Load chain binds. Damaged load chain, pinion shaft, gears
or sheaves.
Disassemble and inspect components as described in “MAINTENANCE”
and “INSPECTION sections.
Load chain not installed properly
(twisted, kinked or “capsized”).
Inspect and adjust or repair as described in “INSPECTION” and “MAINTE-
NANCE” sections.
Load hook latch
does not work.
Latch broken. Replace hook latch.
Load hook bent or twisted. Inspect load hook as described in “INSPECTION” section. Replace if
necessary.
Hoist will not free
chain.
Brake is set. Rotate free chain knob counterclockwise. Refer to “OPERATION” section.