4
PRINCIPLE OF OPERATION
Refer to Figure 2
An electric trigger controls PULL and RETURN strokes of tool. Press
trigger to direct hydraulic pressure to PULL side of piston - - fastener
installation begins.
At end of PULL stroke, before trigger is released, piston uncovers flats of
unloading valve - - pressure is unloaded by allowing fluid to flow back to
POWERIG hydraulic unit. Release trigger at end of PULL stroke when
fastener is installed - - pressure is directed to RETURN side of piston and
moves piston forward. Nose assembly, with tool, is pushed off fastener.
W
ARNINGS
Operators of Huck Installation equipment must always wear approved
eye protection.
Only Huck POWERIG ® Hydraulic Units are recommended as the
power source for Huck tools. Units that deliver high pressure for both
PULL and RETURN, and are not equipped with relief valves, are
specifically not recommended. Severe personal injury or damage to
equipment may occur when using other units.
Proper PULL and RETURN pressures are important for
proper function of Installation Tools. Severe personal injury
or damage to equipment may occur without correct pressures.
Gauge Set-up, P/N T-10280, is available for checking these
pressures using instructions furnished with T-10280 and in
applicable POWERIG Hydraulic Unit instruction manuals.
See Checking and Adjusting Output Pressures.
CAUTION
Keep dirt and other foreign matter out of hydraulic systems
of the tools, hoses, couplers and POWERIG hydraulic Unit.
Do not let hose fittings and couplers contact a dirty floor or
unclean working surface. Foreign matter in hydraulic fluid may
cause hydraulic unit valves and tool valves to malfunction.
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