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GENERAL MACHINE MAINTENANCE
DRIVE
HUB
LEFT BROOM
CHAMBER DOOR
P4388a
HOW TO REPLACE THE MAIN BROOM
Replace the main broom when the bristles are worn to 2 inches in length.
1. Open the left broom chamber door.
2. Put the main broom control in the "SWEEP" position.
3. Remove the retaining bolt. (See Figure 23)
4. Remove the idler arm assembly.
5. Remove the main broom and discard.
6. Put a new main broom in the broom chamber.
7. Rotate the new broom to the right on the drive hub until it engages the drive hub broom tabs.
8. Put the idler arm assembly in place.
9. Put the retaining bolt in place and tighten.
10. Close the broom chamber door.
11. Start the engine.
12. Put the broom lever in the "SWEEP" position.
13. Let the broom sweep in place for 30 seconds.
14. Put the broom lever in the "UP" position.
15 Back the machine off the test spot.
16. Inspect the polished area where the broom swept, for broom bristle contact with the floor. The area of broom
bristle contact with the floor should be 2 to 3 inches or 5 to 8 cm. wide.
MAIN BROOM LEVEL ADJUSTMENT
The main broom level is factory set and should not need adjustment, if the level gets out of adjustment and the
broom bristle contact pattern is not an even 2" to 3" wide, the broom arm lift frame will have to be adjusted. The
frame is supported by two flange bearings. These bearings are located inside the broom doors. The carriage
bolts on the two end flanges will have to be loosened. The frame can then be leveled and the bolts tightened.
1-32
MAIN
BROOM
IDLER
ARM
FIGURE 23
RETAINING
BOLT
American-Lincoln
3366XP
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