HOISTS 777 SERVICE MANUAL
5-26 Published 10-01-2012, Control # 045-08
8. Check load block for signs of overloading: spread side
plates, elongated holes, bent or elongated tie-bolts, and
cracks.
9. Check all welds for defects and cracks.
10. Check wire rope for wear and broken wires at the point
were wire rope enters dead-end socket. Check socket
for cracks. Tighten wire-rope clips at dead end of the
wire rope.
11. Check that each hook has a hook latch and hook latch
operates properly. Latch must not be wired open or
removed.
12. Check each hook and shackle for damage as shown in
Figure 5-24.
See ASME B30-10 Standard specific hook replacement
guidelines.
ASME (formerly ANSI) standards, are available by mail
from the ASME, 22 Law Drive, Fairfield, New Jersey,
0700-2900 (call toll free – US & Canada 800-843-2763,
Mexico 95-800-843-2763, Universal 973-882-1167 or
fax 973-882-1717 or 973-882-5155 or E-mail
infocentral
@asme.org).
Contact the supplier of your hooks, shackles, blocks,
and other rigging for repair instructions.
13. Check each hook and shackle at least yearly for cracks
using a dye penetrant test, MAG particle test, ultrasonic
test, or by X-raying.
Load Block
FIGURE 5-24
A923
Item Description Item Description
1 Dead End Socket
7
Trunnion
2 Side Plate
8
Sling Retainer
3Tie Bolt
9
Hook
4 Sheave Pin
10
Thrust Bearing
5 Nameplate
11
Locking Cap
6 Hook Nut
12
Center Plates
2
1
6
3
4
5
7
8
9
10
11
12
WARNING
Falling Load Hazard!
To prevent load from dropping:
Hook latch must retain slings or other rigging in hook
under slack conditions. Hook latch is not intended as anti-
fouling device, and caution must be taken to prevent hook
latch from supporting any part of load. Slings or other
rigging must be seated in hook when handling load; they
must never be in position to foul hook latch.
WARNING
Falling Load Hazard!
To prevent load from dropping due to hook or shackle
failure:
Do not attempt to repair cracks in hooks and shackles by
welding. Furthermore, do not weld on any load bearing
component unless proper welding methods are used
(contact your Manitowoc dealer for material and welding
specifications).
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