!
WARNING:
Cancer
and Reproductive Harm
www.P65Warnings.ca.gov
46
BROCE FMJ470
MAINTENANCE
(TROUBLESHOOTING)
COMMON PROBLEMS
PROBLEM
PROBABLE CAUSE
SOLUTION
Brush stalls while
sweeping
1. Too much positive
down pressure
2. Too much material to
move
3. Weak Pump
4. Relief valve stuck open
5. Worn hub or shaft
(Broken key on chain
drive core motor)
6. Internal leakage in
motor
1. Raise Broom. Make
two passes
2. Raise Broom. Make
two passes
3. Check system
pressure
4. Check relief valve
5. Replace hub and/or
motor
6. Follow steps 1-5. If
all checks out, replace
motor.
Brush bounces or “hops”
while sweeping
1. Worn/loose core mount
pins and/or worn mount
bushings
2. Loose circle bearings
1. Drill out and replace
bushings and pins that
mount the lift cylinder and
the core hanger. These
must be extremely tight
(zero tolerance). Any
gaps whatsoever can
cause bouncing.
2. Tighten circle bearings
underneath the circle.
