Allied Hy-Ram HR270, Safety, Operation And Maintenance Instructions, Page: 50 / 60

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13.0 Troubleshooting Guide
CAUTION
Only qualified personnel, having knowledge of the
machine’s systems, proper test equipment and
tools should attempt adjustments and repairs.
This guide identifies several commonly encountered
conditions and the recommended corrective action.
For conditions other than these, or if further
assistance is required, contact the Allied Technical
Service Department.
Condition Possible Cause Corrective Action
Breaker does not
operate
Restriction in pressure or return
line
Verify shut off valves are open, verify quick
disconnects are in working condition. Check if hose
has collapsed
Pressure and return lines are
reversed Verify supply line is connected to port marked “IN” and
return line to “OUT”
Piston in brake
Piston must be pushed out of brake. Apply down
pressure on the breaker tool
Incorrect breaker tool installed Verify breaker tool is correct
Insufficient oil pressure Refer to section “Operating Pressure Too Low”
Return line pressure too high Refer to section “Return Line Pressure Too High”
Carrier hydraulic circuit leaks
Locate source of bypass – Adjust, repair or replace
faulty components
Control valve [Carrier]
misadjusted or malfunction Incorrect working mode. Troubleshoot valve for
mechanical, pilot circuit, or electrical fault
AutoLube reservoir is empty -
power interrupted to valve
Fill Auto-lube reservoir
Breaker starts but
operation is irregular
Breaker tool is binding
Maintain right angle to work surface. Refer to Section
6.0
Check breaker tool is receiving sufficient lubrication.
Check operation of AutoLube. Use Chisel Paste
Breaker tool / bushings are worn
Breaker tool loosing contact
with material Use boom, arm and bucket cylinder to follow breaker
as tool penetrates material [Refer to Section 6.0]
Return line pressure too high Refer to section “Return Line Pressure Too High”
Operating flow or pressure is
too low
Refer to section “Operating Pressure Too Low”