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Figure 5-3. View of Gearcase – Cover Removed.
b. To inspect gearing, pull out intermediate gear and pinion
assembly and roller thrust bearings (Figure 5-4), and load
brake assembly (Figure 5-5). Do not remove drum gear unless
visual inspection indicates replacement is necessary.
c. Inspect gears and pinions for signs of tooth wear and
damage. If replacement of any parts appears necessary,
disassemble drum gear, intermediate gear and pinion
assembly, and load brake assembly as directed on following
page.
TIME INTERVAL INSPECTION OR MAINTENANCE
Daily or start Check operation of all functional mechanisms including limit switch operation,
of each shift brakes and control. Check hoist cable for kinks, abrasions, corrosion or broken
(\/isual) wires or evidence of improper spooling on drum. Inspect hooks, upper and lower
blocks, and all load bearing components for damage.
1 Month * HOIST CABLE — Inspect and lubricate per paragraph 5-8.
* ELECTRICAL CONTROLS — Inspect per paragraph 5-4.
1 - 3 Months
Check hoist gearcase oil level — add oil as required per paragraph 4-2.
6 Months
* LOWER BLOCK — Inspect per paragraph 5-2.
UPPER BLOCK — Inspect per paragraph 5-3.
Motor brake and actuating mechanisms. Inspect and adjust per paragraph 5-5.
Annually * Inspect hooks with suitable crack detecting procedures per paragraph 5-2.
Drain and refill hoist gearcase per paragraph 4-2.
Inspect electrical controls per paragraph 5-4. Change hoist gearcase oil — Fill
6 Months or with oil per paragraph 4-2. Lubricate hoist cable per paragraph 4-3. Lubricate
500 - 750 hours * upper and lower hook block per paragraph 4-4. Lubricate limit stop lever per
“on” time paragraph 4-5. If a screw type limit switch is furnished, add a light film of
NLGI No. 2 grease to bevel gear.
5 Years elapsed Complete inspection, disassembly, and maintenance required. It is recommended
time or 5000 * that your YALE Repair Station be contacted for this service.
hours “on” time
*Perform services described by paragraph indicated.
Figure 5-2. Inspection and Maintenance Schedule.
5-5.INSPECT MOTOR BRAKE. See Figure 9-4.
a. Remove acorn nuts holding brake cover and remove
brake cover.
b. Remove brake mounting plate screws and lift brake
assembly off.
c. Check braking surfaces for wear and scoring. Replace
badly worn or scored parts.
d. Reinstall parts in reverse of disassembly.
e. Adjust brake as explained in Section Vll.
5-6.INSPECT MECHANICAL LOAD BRAKE, GEARING AND
OVERLOAD CLUTCH (Optional).
a. The mechanical load brake and gearing may be inspected
and serviced with hoist suspended. To do so, remove lower
block and wire rope, drain oil from gearcase, remove 12 hex
head bolts and lockwashers holding gearcase cover, and pull
cover from gearcase (Figure 5-3).
11404A