TM 10--3510--221--24
0258 00--1
REAR DRUM BEARING REPLACEMENT
0258 00
THIS WORK PACKAGE COVERS:
Removal, Installation
INITIAL SETUP:
Maintenance Level
Materials/Parts
Direct Support
Grease, General Purpose (Item 3,WP 0271 00)
Rag, Wiping (Item 4, WP 0271 00)
Sealant, Multi--Purpose, (Item 5, WP 0271 00)
Washer, Lock, (Item 27, WP 0275 00)
Washer, Lock, (Item 32, WP 0275 00)
Tools and Special Tools
Equipment Conditions
Tool Kit, General Mechanics (Item 1, WP 0272 00)
LADS power shut off at main control
Bearing Puller (Item 4, WP 0272 00)
enclosure (WP 0112 00).
Removal Tool, Bearing (Item 6, WP 0272 00)
Socket, 1--1/2, (Item 8, WP 0272 00)
Wrench, Torque, (Item 9, WP 0272 00)
Forklift, 5,000 lbs
REMOVAL
1. Remove drum rotation sensor (WP 0118 00).
2. Remove drive belt (WP 0117 00).
CAUTION
Prior to removing bearing(s) the front of the drum basket must be support. Failure to
support drum basket may cause drum drive shaft to bend.
3. Remove plugs (1) from two jacking bosses (2).
4. Loosen jam nuts (3) then remove jacking screws (4) from drum frame (5).
5. Thread jacking screws (4) into jacking bosses (2) until they contact bottom of drum basket (6).
6. Tighten jam nuts (3) while maintaining position of jacking screws (4).
WARNING
Drum sheave and bearing are heavy and hard to handle. Provide adequate support when
removing. Failure to follow this precaution could result in serious personnel injury or
equipment damage.
7. Remove three screws (7) and lock washers (8) securing drum sheave (9) to tapered bushing (10).
8. Thread three screws (7) and lock washers (8) into jacking holes (11) then evenly tighten screws until drum
sheave (9) breaks loose from tapered bushing (10).
9. Remove three screws (7) and lock washers (8) from jacking holes (11).
10. Lift drum sheave (9) off of tapered bushing (10).
11. Remove four screws (12), lock washers (13), and flat washers (14), then remove rear belt guard (15) from
bearing support frame (16).