Arconic 254, Instruction Manual

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254 and 254OS Pneudraulic Installation Tools (HK1172)
Specifications
STROKE: 0.565 in (1.43 cm)
WEIGHT: 8.67 lbs (3.9 kg)
MAX AIR PRESSURE: 90 psi (6.2 bar)
MAX FLOW RATE: 3.5 scfm (382.28 l/min )
POWER SOURCE: 90 psi (6.2 bar) maximum shop air
MAX OPERATING TEMP: 125° F (51.7° C)
PULL CAPACITY: 8,620 lbs @ 90 psi (38.34 kN @ 6.2 bar)
SPEED / CYCLES: 30 per minute
HOSE KITS: Use only genuine Huck Hose Kits rated @
10,000 psi (689.5 bar) working pressure.
HYDRAULIC FLUID: Hydraulic fluid shall meet DEXRON ®
III, DEXRON VI, MERCON® , Allison C-4 or equivalent
Automatic Transmission Fluid (ATF) specifications. Fire-
resistant fluid may be used if it is an ester-based fluid
such as Quintolubric® HFD or equivalent. Water-based
fluid shall NOT be used as serious damage to equipment
will occur.

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PULL STROKE
When the trigger is pressed, the throttle
valve moves down to the PULL position,
and pressurized air is directed to the
bottom of the air piston, causing it to
move upward (as shown above). The
air above the air piston is exhausted
and directed through the center of the
throttle valve and out the bottom of the
tool. As the hydraulic piston rod moves
upward, a column of fluid is forced
into head, which moves the pull piston
rearward. The attached nose assembly
moves with the pull piston to start
fastener installation.
RETURN STROKE
When fastener installation is completed,
the trigger is released. Air pressure,
with the assistance of a spring, sends
the throttle valve to the up (RETURN)
position. Pressurized air is re-directed
to the top of the air piston (see above),
causing the air piston and hydraulic rod
to move downward. The air from below
the piston is exhausted through the
bottom of the tool, and springs force
the pull piston to return to its home
position. The damper valve impedes oil
flow at pin break to prevent “tool kick.”
Principle of Operation
Where the following trade names are used in this manual, please
note:
DEXRON is a registered trademark of General Motors Corporation.
Loctite is a registered trademark of Henkel Corporation, U.S.A.
LUBRIPLATE is a registered trademark of Fiske Brothers Refining Co.
MERCON is a registered trademark of Ford Motor Corp.
MOLYKOTE is a registered trademark of Dow Corning Corporation
Never-Seez is a registered trademark of Bostik, Inc.
Quintolubric is a registered trademark of Quaker Chemical Corp.
Slic-tite is a registered trademark of LA-CO Industries, Inc.
Spirolox is a registered trademark of Smalley Steel Ring Company
Teflon is a registered trademark of E. I. du Pont de Nemours and
Company.
Threadmate is a registered trademark of Parker Intangibles LLC.
TRUARC is a trademark of TRUARC Co. LLC.
Vibra-Tite is a registered trademark of ND Industries, Inc. USA.