6
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. Replace
a chain that fails any of the inspections. Check
lubrication and lubricate if necessary. See ‘Load Chain’
under “LUBRICATION.”
CAUTION
• 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:
NORMAL
HEAVY
SEVERE
yearly
semi-annually
quarterly
ENGLISH
Table 1
Hoist
Capacity
Throat Width
Discard Width
inch
mm
inch
mm
MCH5 and VL2
1/2 ton
1,22
31
1,40
35,6
1 ton
1,33
34
1,54
39,1
1-1/2 ton
1,50
38
1,72
43,7
2 ton
1,61
41
1,86
47,2
3 ton
1,85
47
2,12
54,0
5 ton
2,01
51
2,31
58,6
8 and 10 ton
2,80
71
3,21
81,6
15 and 20 ton
3,54
90
4,07
103,5
SM
1/2 ton
0,87
22,1
1,00
25,4
1 ton
1,04
26,5
1,19
30,5
1-1/2 ton
1,18
30
1,36
34,5
2 ton
1,26
32
1,45
36,8
3 ton
1,38
35
1,59
40,2
5 ton
1,53
39
1,76
44,8
