940-220 Powerig®
(HK604)
Alcoa Fastening Systems
16
T
T
ROUBLESHOOTING
ROUBLESHOOTING
Always check the simplest possible cause of malfunction first. For example, blown fuse, tripped circuit
breaker, defective switch or control cord. Eliminate each possible cause until the defective circuit or part
is located. Where possible, substitute known good parts for suspected bad parts. A qualified electrician
should check out the electrical system.Use the guide below as an aid in locating trouble and correcting it.
1. Motor fails to start when trigger is depressed.
a.
Loose or faulty control cord or connectors.
b.
Power source not properly fused.
c.
Defective tool switch.
d.
Loose wire(s).
e.
Defective relay.
f.
Incorrect power source.
g.
Defective motor contactor.
h.
Defective transformer.
2. Motor runs, but tool will not reciprocate.
a.
Hoses not coupled properly.
b.
Hydraulic fluid viscosity not proper or level is
too low.
c.
Defective pilot valve solenoid or coil.
d.
Unloading valve missing in tool.
e.
Bind in tool or nose assembly.
f.
Defective directional valve
g.
Pump to motor coupling damaged.
3. Pintail fastener fails to break off.
a.
PULL pressure set too low.
b.
Worn or defective hose couplers.
c.
Hydraulic fluid viscosity not proper or level is
too low.
d.
Hydraulic fluid overheated.
e.
Worn or defective directional valve.
f.
Internal relief valve set too low or defective.
g.
Worn or defective pump.
4. Tool will not return when switch is released.
(Tool will not push nose assembly off swaged fastener.)
a.
RETURN pressure set too low.
b.
Hoses not coupled properly.
c.
Worn or defective solenoid.
d.
Worn or defective pilot valve.
5. Motor fails to shutt of when installation cycle is
completed.
a.
RETURN pressure is set too high.
b.
Hydraulic fluid viscosity not proper or level is
low.
c.
Hydraulic fluid overheated.
d.
Defective limit switch in pressure switch
assembly.
6. Pump making noise throughout entire cycle.
a.
Pump is cavitating. Fluid level may be low or
fluid viscosity is too heavy.
b.
Strainer is dirty and clogged.
7. Tool will not return when switch is released.
(Tool will not push nose assembly off swaged fastener.)
a.
Pump is cavitating. Fluid level may be low or
fluid viscosity is too heavy.
b.
Strainer is dirty and clogged.
c.
Worn or defective directional valve.
d.
Worn or damaged pump.
e.
Worn or defective hydraulic couplers.
K
K
ITS
ITS
AND
AND
A
A
CCESSORIES
CCESSORIES
Auxiliary Switch and Control Cord 113056
An auxiliary switch is available for use when checking
and adjusting pressures and when troubleshooting.
Gauge T-124833CE
A "T" gauge is available for use when checking and
adjusting pressures, and troubleshooting.
Hose and Control Cord Kits of various lengths
Please contact your HUCK representative.
Directional Valve Seal Kit 124100
Includes seals necessary to service Directional Valve
103596.
Rig Transport Dolly 116685
Heavy duty steel dolly for easy movement of rig
throughout the work area.
