Yale 11353395D manual Inspection Of Rope Drum And Shaft, 7. Drum Frame & Geared Limit Switch

torque the remaining two (2) rope clamps in sequence to 50 ft-lbs.

(2)With all personnel clear of hoist – TURN ON POWER.

(3)Operate hoist “UP” guiding six (6) wraps

of new rope into drum grooves with gloved hand.

(3)Re-install rope guide over rope in rope drum grooves as shown in Figure 5-3. and outlined in Section V, Paragraph 5-6. Continue lubricating as rope is spooled onto the drum until about 28’-0” remain unwound.

(7)With outer lower block covers removed, thread the wire rope through the sheaves of the upper and lower block as shown in Figure 5-6.

(8)Attach swaged rope end to the dead end anchor pin fastening cotter pins or retaining rings as required.

(9)Replace the lower block sheave covers.

(10)Lubricate cable per Paragraph 4-3.

See Figure 9-5 (“B” Frame components) for lower block parts with 7/16” diameter wire rope.

See Figure 9-5 (“C” Frame components) for lower block parts with 9/16” diameter wire rope.

c)Checking for and removal of rope twisting.

(1)To remove rope twist in four part single reeved hoists:

(a)Observe direction block tends to rotate.

(b)Lower the block to a low position and TURN OFF (lock out) POWER.

(c)Remove swaged fitting from anchor pin and rotate rope several turns in a direction tending to correct block rotation.

(d)TURN ON POWER; raise and lower the block several times to feed the correcting twist in the rope through the reeving.

5-8.INSPECTION OF ROPE DRUM AND SHAFT.

a)To remove the rope drum, remove the rope guide and hoisting cable, as outlined in Section V, Paragraphs 5-5 and 5-7.c. respectively.

WARNING

The hoist must be removed from service and placed on the ground for any maintenance that requires removal of the output shaft assembly or drum.

Figure 5-7. Drum Frame & Geared Limit Switch.

b)Remove the Geared Limit Switch or disconnect the wires so that the electrical cable will not inhibit removal of the drum. (See Figure 5-7).

c)Remove the unit from service, place it on the ground, and provide adequate means to support the drum before removing the frame rod nuts at the outboard drum frame end (Figure 5-7). The hardware attaching the drum frame to the hoist and trolley frame may then be removed.

d)Keeping the drum level, remove the drum from the splined output shaft at the gear case end.

5-9.INSPECTION OF HOIST GEARING.

Figure 5-8. Hoist Gear Case Assembly.

a)General. The hoist gear case is a triple reduction splash lubricated vertically split cast aluminum case and cover. The first two high-speed reductions are helical and the third low speed output reduction is

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