11
Tool will not start. Power not being supplied.
Check to make certain that both
hoses are connected.
Defective quick disconnects.
Turn hydraulic circuit control valve
ON.
Check each quick disconnect
separately. Replace as necessary.
Symptom
Possible Cause
Solution
This section describes how to find and resolve problems users may experience. If a situation occurs that is not covered,
call your Stanley Customer Service representative for assistance.
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 tool, always check that the hydraulic power source is supplying the correct
hydraulic flow and pressure to the tool 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.
WARNING
Inspecting the tool or installing parts with the hydraulic hoses connected can result in severe personal injury or equipment
damage.
To prevent accidental startup, disconnect the hydraulic power before beginning any inspection or installation task.
Troubleshooting
continued
Low drilling
torque.
Relief valve setting too low.
Set relief valve at 2100 psi/ 145 bar.
Fluid restriction in hose or valve.
Excess flow and pressure loss.
Locate and remove restriction.
Fluid not warmed-up. Preheat
system.
Use correct fluid.
Hoses too long for hose I.D. Use
shorter hose.
Hoses I.D. too small for hose
length. Use larger I.D. hose.
Tool speed too
high.
Fluid flow rate is excessive.
Check circuit flow rate; add a
proper flow control valve.
Hydraulic pressure and return
hoses reversed.
Correct hose connections. Pressure
should be to the handle port away
from the trigger, return is near the
trigger, or see your Authorized
Dealer for servicing.
Low tool speed.
Fluid flow rate is too low.
Check circuit flow rate.
Oil leaks around
gear housing.
Main shaft seal o-ring leaking.
See your Authorized Dealer for
servicing.
Summary of Contents for DL09150
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