8 MHD56012 - Edition 8
(Dwg. MHP0041)
Note: Nickel Plated load chain for the VL2 is designated by “ND”
at the end of the part number.
Hoists not in Regular Service
1. A hoist that has been idle for a period of one month or more,
but less than one year should be given an inspection
conforming with requirements of “Frequent Inspection”
before being placed in service.
2. A hoist that has been idle for a period of more than one year
should be given a complete inspection conforming with
requirements of “Periodic Inspection” before being placed in
service.
3. Standby hoists should be inspected at least semiannually in
accordance with requirements of “Frequent Inspection.” In
abnormal operating conditions equipment should be
inspected at shorter intervals.
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.
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.
Gears (11 and 14)
Remove U-nuts (40), on opposite side of hoist as the hand chain,
and remove gear cover (17) and support plate (16). Remove old
grease and replace with new. For temperatures -20° to 50° F (-29°
to 10° C) use EP 1 grease or equivalent. For temperatures 30° to
120° F (-1° to 49° C) use EP 2 grease or equivalent.
Table 2: Load Chain Length Inspection
Model
No.
Part No.
Chain
Size
Normal
Length
Discard
Length
mm in. mm in. mm
VL2-005 LCCF005
5.0 x 15 2.95 75.0 3.03 77.0
VL2-010 LCCF010
6.3 x 19.2 3.76 95.5 3.85 97.9
VL2-015 LCCF015
7.1 x 21.2 4.17 106.0 4.28 108.7
VL2-020 LCCV020
8.0 x 24.2 4.72 120.0 4.84 123.0
VL2-030 LCCF015
7.1 x 21.2 4.17 106.0 4.28 108.7
VL2-050
LCCF025 9.0 x 27.2 5.35 136.0 5.47 139.0
VL2-080
VL2-100
VL2-150
VL2-200
Symptom Cause Remedy
Hoist will not lift load. Hoist is overloaded. Reduce load to within hoist rated capacity.
Hoist will not hold load. Brake may be slipping. Inspect brake. Replace brake discs or repair brake as described in
the “MAINTENANCE” section.
Hoist is overloaded. Reduce load to within hoist rated capacity.
Load Chain Binds. Damaged load chain, pinion shaft, gears or
sheaves.
Disassemble hoist, inspect and repair or replace damaged
components.
Load chain not installed properly (twisted,
kinked or “capsized”).
Remove load chain and re-install.
Hand Chain Binds. Damaged hand chain, hand chain wheel,
pinion shaft, gears, load chain, sheaves.
Disassemble hoist, inspect and repair or replace damaged
components.
Hand chain not installed properly (twisted or
kinked).
Remove load chain and re-install.
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.