Yale Series Y80 manual Removing Intermediate Gear Pinion Assembly

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11421

Figure 5-4. Removing Intermediate Gear and

Pinion Assembly.

11422

Figure 5-5. Removed Load Brake Assembly.

d.To disassemble drum gear, remove external snap ring from splined shaft, using heavy-duty snap ring pliers, and pull off gear.

e.To disassemble intermediate gear and pinion, press pinion shaft from gear using an arbor press.

f.It is recommended that load brake assembly be returned to an Authorized Repair Station for inspection and repair. If it is necessary that you make your own inspection and repair, instructions below must be followed:

(1)Place load brake assembly, flange up, in a vise equipped with brass or copper jaw plates to protect pinion gear teeth. Remove snap ring from end of load brake shaft (Figure 5-6).

10333

Figure 5-6. Remove Snap Ring From Load Brake Shaft.

(2)Using a puller tool, remove brake flange from shaft. A groove is provided around outer diameter for this purpose. See Figure 5-7. Remove key from shaft and lift off 2 friction discs, and the pawl and ratchet assembly (Figure 5-8).

10334

Figure 5-7. View Showing Load Brake

Flange Removed.

(3)Remove load brake gear. If replacement of spring, spring retainer or cam is necessary, press off shaft (Figure 5-9).

(4)The load brake pawl and ratchet is a riveted assembly and is not to be disassembled.

(5)Clean all parts thoroughly and inspect for wear and damage. Replace all parts that are excessively worn or damaged. Hard surface or glazed friction discs should be replaced.

10335A

Figure 5-8. Removing Pawl and Ratchet Assembly

From Load Brake Shaft.

g.Reassemble gearing and load brake parts following reverse procedure of disassembly. In assembling load brake, observe assembly steps (1) through (4) below:

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Contents Including Rated Loads 1/2 Thru 5 TonsForeword IndexSection II Installation Section I General DescriptionPRE-OPERATION Checks Limit Stop Mechanism Being Tripped By Lower Block Operating Precautions Section III OperationPush Button Operation Lubricate Upper Sheave and Lower Block Assembly Section IV LubricationLubricate Limit Stop Lever Section Inspection and Preventive Maintenance Inspect Lower Block Inspect Upper Block and Hoist SuspensionInspection Schedule and Maintenance Report Time Interval Inspection or Maintenance Inspect Mechanical Load BRAKE, GearingRemoving Intermediate Gear Pinion Assembly Inspect Rope Drum and Shaft Rope INSPECTION, Maintenance and Replacement Rope ReevingTurn OFF Power to Hoist 12204A Testing Hoist and Overload Clutch Optional Do not lift more than rated load except for test purposes Section Vl Trouble Shooting Probable Cause Remedy Section Vl Trouble Shooting Probable Cause Remedy Section Vll Adjustments Section Viii Wiring Diagrams Section IX Parts ListIndex of Exploded View Parts Illustrations Part Qty Number Description Part Qty Number Description Req’d †Recommended spares 11456LC Gearing and Load Brake Parts. Cont’d 12756H Kit Description Part Number Reference Numbers Included Hoist Motor Brake Early Version Hoist Motor Brake. Cont’d Qty Req’d 11460 12748A Not available separately. Order Push Button Station 12721A Push Button Station and Conductor Cable Assembly. Cont’d 12721 10. Push Button Station and Conductor Cable Assembly. Cont’d 11. Lower Block Assembly Two Parts Rope, Single Reeved 12. Lower Block Assembly-Two Parts Double Reeved Quantity Required 14. Screw-Type Limit Switch Parts Warranty