Operation Manual

Owner’s Manual
R
PowerBoss, Inc. A Member of the Hako Group © 2007 PowerBoss
®
CORE 50 Sweeper Scrubber Page 65
PowerBoss
®
The Power of Clean
TROUBLESHOOTING (CONTINUED)
PROBLEM CAUSE SOLUTION
Hydraulic gear pump failure
(Continued).
Oil strainer clogged. Replace strainer (inside
reservoir).
Incorrect oil. Use recommended viscosity
oil.
Damage due to entry of air
into hydraulic system.
Maintain correct hydraulic
fluid level in reservoir. Keep
suction hose fittings tight.
Hydraulic variable
displacement pump failure.
Pump leaking. Replace seals.
Relief valve(s) stuck. Clean or replace relief
valve(s) at the pump.
Drive coupling malfunction. Replace defective gears.
Control linkage out of
adjustment
Check to see if linkage is
binding unfastened.
Charge pump gears worn or
scored
Replace defective gears.
Damage due to entry of air
into hydraulic system.
Maintain correct hydraulic
fluid level in reservoir. Keep
suction hose fittings tight.