Hoist Hook - Greenlee 639 Instruction Manual

Hoist Hook

Warnings and Application Instructions
• Trained personnel should perform a visual periodic
inspection for deformation, wear, gouges, cracks,
and nicks as part of a documented safety inspection
program in compliance with the ANSI B30.10 sched-
ule. (See ANSI/ASME B30.10 "Hooks" for additional
information.)
• A hook with a gouge, crack, or nick shall be removed
from service and shall be repaired by trained person-
nel by grinding lengthwise, following the contour of
the hook, provided that the reduced dimension is
within the limits shown in Figure 1. Never use a hook
worn beyond the limits of Figure 1.
• Never use a hook whose tip has been distorted or
bent more than 10 degrees out of plane from the hook
body or whose throat opening has been increased.
(A bent or worn tip will prevent the hook latch from
latching properly.)
• Never rework, reshape, repair, or alter a hook by
welding, bending, heating, or burning.
• Never tip load, side load, or back load a hook. (See
Figure 2.)
• The latch must never support the load, only the hook
may support the load. (See Figure 3.) Regulations
and/or safety codes (OSHA, MSHA, ANSI, ASME,
Insurance, etc.) may require the use of a latch be
mandatory.
• When using two (2) sling legs in a hook, never exceed
45 degrees from the vertical to either sling leg and the
angle between the legs shall not exceed 90 degrees.
• If using more than two (2) slings or for angles greater
than 90 degrees, a bolt type anchor shackle or master
link shall be used to attach the sling legs to the hook.
Greenlee Tools, Inc.
• Loads may disengage from hook if proper pro-
cedures are not followed.
• A falling load may cause serious injury or death.
• Hook must always support the load. The load must
never be supported by the latch.
• Read and understand these instructions before
using hook.
2/3
45° 45°
ZONE B
ZONE C
60°
ZONE A
Side Load
Right Wrong
Figure 3 Figure 4
8
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
Hook Sheaves
ZONE A: Repair not required
ZONE B: 10% of original dimension
ZONE C: 5% of original dimension
ZONE D
ZONE D: Do not repair
Figure 1
Back Load Tip Load
Wrong
Figure 2
45° 45°
Figure 5