TROUBLESHOOTING

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 grinder, always check that the hydraulic power source is supplying the correct hydraulic flow and pressure to the grinder as listed in the table. Use a flowmeter known to be accurate. Check the flow with the hydraulic oil temperature at least 80 °F/27 °C.

SYMPTOM

POSSIBLE CAUSE

SOLUTION

Saw does not run.

Hydraulic power source not

Check power source for proper flow

 

functioning correctly.

and pressure (7–10 gpm/26–34 lpm,

 

 

2000 psi/140 bar.

 

Coupler or hoses blocked.

Remove obstruction.

 

Mechanical failure.

Have tool serviced by authorized

 

 

dealer.

Saw runs backwards.

Pressure and return lines incorrectly

Correct hose connections. Motor

 

connected.

shaft rotates counter-clockwise as

 

 

viewed from the end of the motor

 

 

shaft.

Saw cuts too slow.

Insufficient fluid flow or too high back-

Check hydraulic supply. If hydraulic

 

pressure or relief valve set too low.

supply is correct, have unit serviced

 

 

by authorized dealer.

 

Wrong wheel for material being cut.

Use correct wheel.

Fluid leakage.

Seal failure.

Do not use. Have serviced by an

 

 

authorized dealer.

Off-center cut and binding.

Bearings worn on link arms.

Have unit serviced by an authorized

 

 

dealer.

 

Incorrect cutting technique.

Review operating procedures.

RS25 User Manual ◄ 15

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Stanley Black & Decker RS25 user manual Troubleshooting, Symptom Possible Cause Solution