2
2. MAINTENACNE
After use, service the hoist before storing it.
Servicing and repairs should only be carried out by qualified, competent, and responsible people.
(a) Clean the hoist throughly.
(b) Keep the hoist well-lubricated. Oil the load chain and hook shank.
(c) Store the hoist correctly against rain and moisture. When the hoist is installed outdoors, exceptional
care should be taken regarding maintenance.
3. INSPECTION
Frequent inspections – Visual inspection by operator or other authorized
person, and listening (while hoist operates) for unusual sounds which may
indicate trouble.
Exception: Brakes require more than audio-visual inspection. Check
frequently by operating hoist, with and without load, stopping at various
positions to test holding power and observe amount of drift, if any.
To adjust brake: (see FIGURE 1)
A. Fully-tightened position.
B. Slack off slightly form positionA, and insert the cutter pin.
＊ replace brake disc if thickness is less than 0.08 inch.
4. CHIANAND HOOKS
The hooks and load chains are made of special alloy-steels and are precisely heat-treated. Never weld or
heat-treat them again.
(a) Load Chain
The load chains are exceptionally
Long-wearing, but wear is unavoidable and certain conditions will cause wear and corrosion that will
lessen the strength. Load chains worn beyond the permissible limits shown in the Table 1 must be
replaced at once.
TABLE 1 CHAIN DIMENSIONS
Capacity
Tons Diameter Of
Chain Wire Maximum Allowable
Gauge Length
1/2 6.3 mm 21 links = 16.6 inches
1 6.3 mm 21 links = 16.6 inches
2 8.0 mm 21 links = 21.0 inches
1-1/2, 3 7.1 mm 21 links = 18.4 inches
5 8.0 mm 21 links = 21.0 inches
