5
254 and 254OS Pneudraulic Installation Tools (HK1172)
The
254
tool ships with a plug in the air inlet connector.
The connector has 1/4”-18 female pipe threads to accept
the air hose fitting. Huck recommends quick-disconnect
fittings and a 1/4” inside-diameter air hose.
The air supply should be have a filter-regulator-lubricator
unit and access to a 90-psi (
6.2 bar
) air supply capable of
a flow rate of 13.5 cfm (
382.28 l/min
).
NOTE: Air quick-
disconnect fittings and air hoses are not available
from Huck International, Inc. Huck includes an air
hose (P/N 115436) to facilitate immediate tool use.
1. Remove the shipping plug from air inlet connector
and add a few drops of an approved hydraulic fluid
.
2. Apply Parker Threadmate
®, Loctite® 567, or Slic-
Tite®
(per manufacturer’s instructions)
to quick-
disconnect fittings; screw the quick-disconnect fitting
into the air inlet connector.
NOTE: On older nose
assemblies with lock collars, use Loctite
®
243™ on
collet threads, because the 254 pull piston does
not have staking holes. Refer to the nose assembly
drawings that shipped with nose assemblies.
3. Set the
air pressure on the regulator to
90
psi (
6.2
bar
)
, and connect the air hose to the tool. Press and
release the trigger a few times to cycle the tool.
4. Disconnect the air hose from the tool, and remove the
stop and the retaining or lock nut. Select the proper
nose assembly for the fastener being installed.
5. Hold the pull piston with a 3/8” hex key and screw the
collet assembly (including the lock collar and shim if
applicable) onto the spindle; tighten with a wrench.
6. Slide the anvil over the collet assembly and into the
counterbore. Slide the stop and the retaining or lock
nut over the anvil, and screw the nut onto the head.
7. Connect the air hose to the tool and install fasteners
in a test plate of proper thickness with proper size
holes. Inspect the fasteners.
8. If fasteners do not pass inspection, see
Troubleshooting
to investigate possible causes.
Preparation for Use
CAUTION: Do not use TEFLON
®
tape on
pipe threads. Tape can shred, resulting in
malfunctions. Threadmate
®
is available in a
4oz. tube from Huck (P/N 508517).
Kits
&
Accessories
KITS
Service Kit 254KIT
contains perishible parts, such as O-rings, springs,
etc. Please reference Figures 9-12. Items marked with
an asterisk (*) are included in this service kit. The kit
contains enough items to service either the 254, or the
254OS.
Assembly Tool Kit 126104
contains
Piston Assembly Tool 123111-1, and
Spacer123112-2. Both are also available separately
ACCESSORIES
Stall Nut
- 120824
Note: This stall nut is included in Service Kit 254KIT.
P
roduct-specific
Spare Parts Service Kits
that c
ontain various perishable parts are available for each tool. The type
s
and quantities
of spare parts var
y
with the application and tools in use.
Have the appropriate kit
accessible when
using this tool
and when performing maintenance on it
.
Huck also recommends having the following
Accessories
available
when
preparing, using, and performing
maintenance on this tool.
