R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 1 - Manual (Page 21)

LM01 I&M MANUAL/EN/11.30.2010
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5.3.3 Hoist Motor Brake Adjustment (See Figure 5)
If maximum air gap of brake has been reached or will be exceeded before next inspection, readjust air gap.
Minimum air gap Maximum air gap
X = 0.006” [ 0.15 mm ] X = 0.020” [ 0.5 mm ]
Before adjusting brake, remove load. Per ANSI Z244.1, lockout and tag main disconnect switch in de-
energized position. Follow other maintenance procedures outlined in this manual and ASME B30.16.
1. Remove brake cover and gasket.
2. With a feeler gauge, check three places near each mounting bolts, to measure air gap ( X ) between the
brake lining (Item 2 – Figure 5) and the coil (Item 1 – Figure 5).
3. To adjust the brake:
Tighten or loosen the screws (Item 5 – Figure 5). This compresses or decompresses the elastic
washers (Item 7 – Figure 5).
4. Check brake operation. Run load block up and down several times without a load to test operation of
brake. Then, lift a capacity load about one foot above floor, stop, and check that brake holds load.
5. Install gasket and brake cover.