HPD-T and HPD-HV Hydraulic Sign Post Drivers
Greenlee / A Textron Company
16
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
Problem
Probable Cause
Probable Remedy
Troubleshooting
Before troubleshooting, determine whether the problem
is in the tool, the hoses, or the power source. Substitute
a tool, hoses, or power source known to be in good
working order to eliminate the item that is not operating.
If the problem is in the tool, refer to the troubleshooting
table below. If the problem is in the power source,
refer to the troubleshooting section of the power
source instruction manual.
Tool does not operate.
Verify that the power source meets the
specifications.
Improper power source.
Check the fluid level. Check system for leaks.
Hydraulic fluid level low.
Use hydraulic fluid with the correct viscosity.
Incorrect hydraulic fluid viscosity.
Hydraulic fluid cold.
Allow fluid to warm to the operating
temperature. Actuate the tool intermittently to
reduce the warming time.
Tool operates slowly or
erratically.
Hydraulic fluid level low.
Check the fluid level. Check system for leaks.
Power source not adjusted correctly.
Refer to the power source operator’s manual.
Set the flow and pressure to correspond with
the tool.
Air in the hydraulic system.
Refer to the power source manufacturer’s
instructions for removing air from the system.
Incorrect hydraulic fluid viscosity.
Use hydraulic fluid with the correct viscosity.
Tool feels hot.
Hydraulic fluid level low.
Check the fluid level. Check for leaks.
Incorrect hydraulic fluid viscosity.
Use hydraulic fluid with the correct viscosity.
Hydraulic fluid dirty.
Refer to the power source owner’s manual for
procedure to replace hydraulic oil and filter.
Strike rate is normal;
blow energy is weak.
Low accumulator gas pressure.
Broken accumulator diaphragm.
Return tool to an authorized Fairmont
service center.
Return tool to an authorized Fairmont
service center.
