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Inspect chain at least once a month. Between regular inspections, check visually daily for nicks, gouges, weld splatter,
corrosion, or distorted links. Inspect chain thoroughly if it does not feed smoothly over load sheaves. Inspect as follows:
1.
Clean chain with solvent before inspection.
2.
Test hoist with load and observe operation of chain over load sheaves.
3.
Slacken chain and inspect contact points for excessive wear. Refer to Figure 2.
4.
Using caliper-type gauge, measure inside length of 5 links under light tension. Refer to Figure 3. Replace chain if
measurement exceeds maximum allowable gauge length as follows:
CAPACITY
CHAIN WIRE
TONS
DIAMETER
1/4
4.2mm
1/2
5.0mm
3/4
5.6mm
1-1/2
7.1mm
3 & 6
9.0mm
You will occasionally want to disassemble your lever hoist for cleaning. To do so, proceed as follows:
To disassemble gear case:
1.
Lay tool on side, gear case facing up.
2.
Disconnect four hexnuts on gear casing.
3.
Lift off gear casing.
4.
Remove dirt from surfaces, using solvent or rag.
To assemble gear case:
1.
Place gear case back on bolts, matching gear shafts to bearings on interior of gear casing.
2.
Secure firmly with four hexnuts.
To disassemble brake and lever for cleaning:
1.
Place tool on side, feed handwheel facing up.
2.
Remove cotter pin from castle nut in handwheel.
3.
Remove castle nut and washer.
4.
Remove two capscrews from handwheel.
5.
Lift off feed handwheel.
6.
Remove four hexnuts on side of brake cover.
7.
Unscrew lever. It may be necessary to hold pinion shaft stationary.
8.
Lift off brake cover and lever as a unit. Brake is now visible.
9.
Remove brake and linings, keeping track of sequence of removal.
10. Remove dirt from surfaces, using solvent or rag. If brake linings show wear or cracks, replace.
To disassemble lever for cleaning:
1.
Remove lever from hoist (after removing feed handwheel as described in steps 1 through 5 above).
2.
Remove two hexnuts from back of lever.
3.
Flip lever upside down, dropping back insert into hand.
4.
Clean with solvent and relubricate.
To assemble lever:
1.
Place insert into back of lever, taking care to engage tab at top of lever into receiving hole.
2.
Screw on nuts. It may be necessary to jog the direction lever a few times to allow the parts to mate correctly.
To assemble brake:
1.
Set brake and linings back into place.
2.
Replace spring with wide end toward lever.
3.
Place brake cover and lever back on bolts, then turn lever clockwise to screw it down, securing with hexnuts.
4.
Replace feed handwheel and capscrews. Use a thread locking product to ensure the capscrews are secure.
5.
To set brake:
• Place feed knob back on.
• Screw castle nut on snuggly, then reverse only far enough to line up holes for cotter pin.
• Insert cotter pin and secure with proper tool.
CHAIN
5 LINKS
5 LINKS
NORMAL
MAXIMUM
60mm
62.5mm
75mm
79.5mm
85.6mm
88.2mm
105.7mm
108.9mm
135.3mm
139.3mm
DISASSEMBLING AND ASSEMBLING
7
Figure 2
Figure 3
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