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Owners Manual
R
PowerBoss, Inc. A Member of the Hako Group ©
2007 PowerBoss
®
CORE 50 Sweeper Scrubber
Page 64
PowerBoss
®
The Power of Clean
PROBLEM CAUSE SOLUTION
Hydraulic control valve
failure.
Misaligned control linkage. Align.
Foreign matter in spool bore. Remove spool and clean
bore.
Valve seals leaking. Replace seals.
O-rings leaking. Replace O-rings.
Relief valve stuck open. Clean or replace relief valve.
Hydraulic motor failure. Motor leaking. Replace seals.
Drive link malfunction. Replace drive link.
Output shaft malfunction. Replace output shaft and
bearings.
Hydraulic gear pump failure. Pump leaking. Replace seals.
Gears worn or scored. Rebuild pump.
Relief valve stuck. Clean or replace (at control
valve).
Oil supply low. Check and fill.
TROUBLESHOOTING (CONTINUED)
66


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