PROBLEM
CAUSE
SOLUTION
Pump will not build
full pressure.
1. Check for external leakage.
2. Improperly adjusted external
pressure regulator setting.
3. Internal or external leakage on
hydraulic tool.
4. Inadequate power supply.
5. Leaking control valve or defective
pump.
1.
pipes or hoses.
2.
Center 4-Way Control Valve with Huck Tooling”
on page 11.
3. Remove the tool from the pump. If the pump
builds full pressure, the tool is defective. Contact
your Huck distributor.
4. Refer to “Pump Operation” section on page 10.
5. Contact your Huck distributor.
Tool(s) will not pull or
return.
1. Quick disconnect couplings are not
completely coupled.
2. Broken return spring in spring-re-
turn tool or seal blown in double-act-
ing tool.
1. Check quick disconnect coupling to tools to
ensure that they are completely coupled.
Occasionally couplers have to be replaced
because the ball check does not stay open due to
wear.
2. Contact your Huck distributor.
Troubleshooting
WARNINGS:
A double acting tool must
have both hoses and all
couplers securely connect-
ed to both ports. If one of
the two ports is restricted
or becomes disconnected,
pressure will build and the
tool, hose or coupler can
burst, possibly causing seri-
ous injury or death.
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