Troubleshooting - Stanley CR27 User Manual

If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem. When
diagnosing faults in operation of the saw, always make sure the hydraulic power source is supplying the correct
hydraulic flow and pressure to the saw as listed in the table. Use a flowmeter know to be accurate. Check the flow
with the hydraulic fluid temperature at least 80 °F/27 °C.
PROBLEM
Tool will not operate.
Trigger and valve spool stick.
Saw cuts poorly.
Saw slows excessively under load.
Hydraulic oil leaks from motor shaft. Motor shaft seal worn or failed.
Hydraulic oil leaks between valve
handle and outer tube handle.
20 ► CR27 User Manual

TROUBLESHOOTING

CAUSE
Hydraulic system not engaged or
running.
Hydraulic system control valve is
OFF.
Tool not connected to the hydraulic
system.
Damaged trigger guard.
High back pressure.
Tool reverse plumbed to the
system.
Valve spool or spool bore scored by
contaminated hydraulic fluid.
Blade is dull.
Saw is running backwards.
Blade installed backwards.
System relief valve set too low.
Tool motor worn.
Oil tube seals worn or oil tubes
worn.
REMEDY
Engage or start hydraulic system.
Turn the system control valve ON.
Connect tool to the system.
Have repaired by an authorized
Stanley Hydraulic Tools dealer.
Determine cause of high back
pressure and return line and
remove restriction.
Correctly connect the pressure and
return lines.
Have repaired by an authorized
Stanley Hydraulic Tools dealer.
Replace with sharp blade.
Check direction of rotation. Correct
rotation is counterclockwise as
viewed from the motor side of the
saw blades.
Install the blade correctly. Blade
teeth point in direction of rotation,
counterclockwise as viewed from
the motor side of the saw blades.
Check system relief and adjust
relief valve to crack open at 2100
psi.
Have inspected and repaired by an
authorized Stanley Hydraulic Tools
dealer.
Have inspected and repaired by an
authorized Stanley Hydraulic Tools
dealer.
Have inspected and repaired by an
authorized Stanley Hydraulic Tools
dealer.