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(Dwg. MHP0040)
(Dwg. MHP0111)
4.
CHAIN (ref. Dwg. MHP0102). Examine each of
the links for bending, cracks in weld areas or
shoulders, transverse nicks and gouges, weld
splatter, corrosion pits, striation (minute parallel
lines) and chain wear, including bearing surfaces
between chain links. Check lubrication and
lubricate if necessary. See 'Load Chain' under
"LUBRICATION."
•
The full extent of chain wear cannot be determined by visual inspection. At any indication of chain wear inspect
chain and load sheave in accordance with instructions in "Periodic Inspection."
•
A worn load chain may cause damage to the load sheave. Inspect the load sheave and replace if damaged or
worn.
5.
LOAD CHAIN REEVING. Make sure welds on standing links are away from load sheave. Re-install chain if
necessary. Check that the last link of the load chain is securely connected. Make sure chain is not capsized, twisted
or kinked. Adjust as required.
Periodic Inspection
Frequency of periodic inspection primarily depends on the severity of usage:
Disassembly may be required for HEAVY or SEVERE usage. Keep accumulative written records of periodic inspections
to provide a basis for continuing evaluation. Inspect all items in "Frequent Inspection." Also inspect the following:
1.
FASTENERS. Check rivets, capscrews, nuts, cotter pins and other fasteners on hooks, hoist body and chain bucket,
if used. Replace if missing and tighten or secure if loose.
2.
ALL COMPONENTS. Inspect for wear, damage, distortion, deformation and cleanliness. If external evidence
indicates the need for additional inspection return the hoist to your nearest Ingersoll-Rand service repair center.
3.
HOOKS. Inspect hooks for cracks. Use magnetic particle or dye penetrant to check for cracks. Inspect hook
retaining parts. Tighten or repair, if necessary. Refer to applicable specifications for additional hook inspection
information.
CAUTION
NORMAL
HEAVY
yearly
semiannually
5
Table 1
Throat Width
Hoist
Capacity
inch
mm
MCH5 and VL2
1/2 ton
1,22
1 ton
1,33
1-1/2 ton
1,50
2 ton
1,61
3 ton
1,85
5 ton
2,01
8 and 10
2,80
ton
15 and 20
3,54
ton
SMA
1/2 ton
0,94
1 ton
1,10
1-1/2 ton
1,34
2 ton
3 ton
1,50
5 ton
1,89
(Dwg. MHP0102)
SEVERE
quarterly
Discard Width
inch
mm
31
1,40
35,6
34
1,54
39,1
38
1,72
43,7
41
1,86
47,2
47
2,12
54,0
51
2,31
58,6
71
3,21
81,6
90
4,07
103,5
24
1,09
27,6
28
1,27
32,2
39,1
34
1,54
39
38
1,72
47,3
48
2,17
55,2
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