Stanley DH3500 - Troubleshooting; Hammer Issues; Hydraulic System Overheating

14 DH USER MANUAL
This section describes how to nd and resolve problems users may experience. If a situation occurs that is not covered, call
your Stanley Customer Service representative for assistance.
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.
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
ow and pressure to the tool as listed in the table below. Use a owmeter known to be accurate. Check the ow with the
hydraulic oil temperature at least 80° F/27° C.
PROBLEM CAUSE SOLUTION
Hammer will not re.
Hydraulic ow is in wrong direction. Reverse the ow.
Low hydraulic oil level. Fill reservoir.
No ow to breaker. Have hydraulic circuit tested by
authorized dealer/distributor per
approved procedure.
Main relief set low.
Internal damage.
Have unit serviced by an authorized
dealer/distributor.
Damaged quick couplers. Replace.
Hammer runs slowly.
Low hydraulic ow
Have hydraulic circuit tested by an
authorized dealer/distributor per
approved procedure.
Internal leakage.
Have unit serviced by an authorized
dealer/distributor.
Hammer runs erratically.
Damaged switch or connection.
Have carrier serviced by an authorized
dealer/distributor.
Relief set too low.
Internal damage.
Hammer binding. Clean hammer in housing.
Chain or lift lug damage Perform inspection as listed on Page 13
Hydraulic system overheats.
Chain tension too tight Have unit serviced.
Main relief set low.
Have unit serviced by an authorized
dealer/distributor.
Insufcient cooling capability in hydraulic
circuit.
Line/hose size too small.
Excessive back-pressure.
WARNING
TROUBLESHOOTING