Harrington Hoists and Cranes AHM Hoist - Manual (Page 34)

34
Table 5-6 Top Hook & Bottom Hook Dimensions
Dimensions K and U should be measured and recorded below
prior to any use when the hook is first placed into service.
Hoists
Parts List
Fig. No.
“K” Dimension
inch (mm)
“U” Dimension
inch (mm)
Recorded
Dimension
When New
Maximum
/Minimum Value
for Discard
Recorded
Dimension
When New
Maximum
/Minimum Value
for Discard
AH250C
AH250P
AH250M
AH500C
AH500P
AH500M
140a
Top Hook K =
____________
For K if the
measured
dimension exceeds
K(new) + 0.5mm,
the hook should be
replaced.
Top Hook U =
____________
For U if the
measured
dimension is less
than U(new) - 1mm,
the hook should be
replaced.
142a
Bottom Hook K =
____________ Bottom Hook U =
____________
Table 5-7 Chain Dimensions
Hoists
“P” Dimension
inch (mm)
“d” Dimension Wear Limit
Inch (mm)
Standard Discard Standard Discard
AH250C
AH250P
AH250M
AH500C
AH500P
AH500M
2.38 (60.5) 2.43 (61.7) 0.16 (4.0) 0.13 (3.3)