Stanley CS25 - Troubleshooting

18
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 pole chain saw, always make sure the hydraulic power source is supplying the
correct hydraulic fl ow and pressure as listed in the table. Use a fl owmeter know to be accurate. check the fl ow with the
hydraulic fl uid temperature at least 80
o
F/27
o
C.
PROBLEM CAUSE SOLUTION
Cuts slow. Insuffi cient fl uid fl ow or low relief valve
setting.
Adjust fl uid fl ow to proper gpm. for op-
timum performance adjust relief vlave
to 2250 psi/155 bar.
Chain dull. Sharpen per instructions or replace.
Backpressure too high. Should not exceed 250 psi/17 bar at
rated fl ow measured at the end of the
tool operating hoses.
Bar turns color. Insuffi cient oiler fl ow. Adjust oiler per service instructions.
Tool does not run. Power unit not functioning. Check power unit for proper fl ow and
pressure 4-6 gpm/15-22 lpm at 1500
psi/104 bar minimum for CS28. 7-9
gpm/26-34 lpm at 1000 psi/70 bar
minimum for the CS25.
Coupler or hoses blocked. Remove obstruction.
Mechanical failure. Disassemble tool and inspect for dam-
age.
Tool runs backwards. Pressure and return hoses reversed. Correct for proper fl ow direction.
Motor shaft rotates clockwise.
Oil leakage around drive sprocket. Motor shaft seal failure. Replace as required. Make sure that
oil present is not the result of excess
oiler fl ow.
On/Off trigger is hard to press. Pressure and return hoses reversed. Correct for proper fl ow direction.
Backpressure too high. Should not exceed 250 psi/17 bar at
rated fl ow measured at the end of the
tool operating hoses.
Motor sections oil leakage. Motor face seal failure. Replace as required.