Service - HLA BR72 Operator's Manual

SAFETY FIRST!! READ AND UNDERSTAND THE SAFETY INSTRUCTIONS (
of this manual)
Hydraulic fluid under pressure can penetrate skin, resulting in serious injury or death.
Always relieve hydraulic pressure before disconnecting lines.
•
Repair or adjust the Broom in a safe area, away from traffic and other hazards.
•
Shut off engine, set parking brake and relieve hydraulic pressure before connecting or disconnecting hydraulic lines. Refer
to your power unit's manual for instruction on how to relieve hydraulic pressure in lines.
•
Before applying pressure to the system, be sure that all connections are tight and be sure there are no damaged hoses,
lines or fittings.
•
Wear safety glasses and use metal or wood when searching for leaks. Do not use your hands.
Before servicing the loader, remove the attachment and make certain the lift arms are lowered to their
lowest position or that the arms are supported by the mechanical lock up devices (if the machine is so
equipped).
Steam-clean the power unit before any installation is made to the hydraulic system. Remove any attachment from the power unit
and position on a level surface.
Wear heavy leather gloves (wire bristles are sharp and will puncture skin).
1. Set the Broom on low blocks or stands. Block the brush core separately.
2. Remove the end cap bolts and remove cover. (Keep all bolts for later reinstallation).
3. Remove bolts which hold motor pot.
4. Motor should slide straight out. The drive plate is not fastened to the rotor and should slide out with the motor.
5. Repeat at other end.
6. Move rotor away from Broom and undo 6 bolts holding end cap on the rotor.
7. Slide old bristles off core. (May need to set rotor on end weight or tie down to the floor and use a hoist to pull bristles off
one row at a time). Take care not to damage the core.
8. To reassemble: slide new bristles on frame. Note: locate drive pins on each side of rotor flat bar. Orient waves on bristle
core so the high sides come together. Bristles alternate, one poly and one steel.
9. Reinstall end plate with the six bolts and tighten.
10. Check drive plates on motor. They should be pushed all the way back on the motor shaft. (They are not set screwed on the
motor shaft)
11. Align the rotor on the sweeper frame and insert motor with the drive plates. Drive pins should enter drive holes in the rotor.
Start the pot mount bolts – do not tighten at this point.
12. Repeat step #11 on other end.
13. Tighten bolt at this time.
14. Replace end cover and bolt securely.
BROOM SERVICE
BEFORE BEGINNING ANY BROOM SERVICE.
TO REPLACE BRISTLES
WARNING
WARNING
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pages 3-6