HLA BR Series, Operator'S Manual

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15
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TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Brush slows or stops when
sweeping
Travel speed too fast
Travel no more than 5 mph (8kph) while
sweeping
Trying to sweep too much
material at once
Make several passes with Broom
Relief pressure set too low Set relief pressure to 2000 psi (138.0 bars)
Pump has failed Contact dealer to repair or replace
Filter plugging Change or clean filter
Hydraulic motor is failing Test hydraulic system
Dirt or debris in spools Contact your dealer or HLA
Brush head assembly “bounces”
during sweeping
Travel speed too fast and/or
brush speed too slow
Find correct combination of ground
and brush speeds: do not travel at
more than 5 mph (8 kph)
Core is bent Replace core
Brush wears into cone shape
Broom is not level Level Broom before each use
Tires on power unit at different
pressures or are different sizes Check tire sizes and rating; make
corrections as necessary
Brush wears very quickly Brush pattern too wide
Adjust brush pattern 2-4 inches
(5-10cm)
Hydraulic drive motors
malfunctioning
Low hydraulic fluid level Check and replenish hydraulic fluid.
Improper hose hookup
Check and correct hydraulic hose
connections.
Broken hydraulic line Check for leaks and replace line.
Jammed brush Remove interference.
Quick disconnect coupler(s) are
not connected or “Flow Check” Check coupler connections.
Replace coupler(s) if necessary.
Hydraulic hose blockage
Check for evidence of damage to hoses
that would block flow of oil between
cylinders and control valve.
Hydraulic fluid leaking past seals Replace seals.
Drum operates in wrong
direction relative to control valve
lever position
Hydraulic hoses connected
incorrectly
Correct hydraulic hose connections.
Aeration of hydraulic fluid
(
generally indicated by foamy
appearance of fluid ).
Low hydraulic fluid level
Check and refill hydraulic system to proper
level.
Hydraulic fluid foaming due to
improper hydraulic oil usage
Refer to Power Unit’s manual and replace
hydraulic oil using recommended hydraulic
oil.