Huck 246 User manual

Patent Pending
January 27, 2017
HK825
Makers of Huck®, Marson®, Recoil®
Brand Fasteners, Tools & Accessories
Instruction Manual
246
Pneudraulic Installation Tool
Declaration of Conformity
2
Safety Instructions
3
Specifications
4
Principle of Operation
5
Preparation for Use
6
Maintenance
7
Operating Instructions
8
Disassembly Instructions
9-10
Assembly Instructions
11
Fill and Bleed
12-13
Components Drawings
14-15
Kits and Accessories
16
Troubleshooting
16

2
246 Pneudraulic Installation Tool (HK825)

3
246 Pneudraulic Installation Tool (HK825)
I. GENERAL SAFETY RULES:
1. A half hour long hands-on training session with qualified personnel is
recommended before using Huck equipment.
2. Huck equipment must be maintained in a safe working condition at all times.
Tools and hoses should be inspected at the beginning of each shift/day for
damage or wear. Any repair should be done by a qualified repairman trained
on Huck procedures.
3. For multiple hazards, read and understand the safety instructions before
installing, operating, repairing, maintaining, changing accessories on, or
working near the assembly power tool. Failure to do so can result in serious
bodily injury.
4. Only qualified and trained operators should install, adjust or use the assembly
power tool.
5. Do not modify this assembly power tool. This can reduce effectiveness of
safety measures and increase operator risk.
6. Do not discard safety instructions; give them to the operator.
7. Do not use assembly power tool if it has been damaged.
8. Tools shall be inspected periodically to verify all ratings and markings required,
and listed in the manual, are legibly marked on the tool. The employer/
operator shall contact the manufacturer to obtain replacement marking labels
when necessary. Refer to assembly drawing and parts list for replacement.
9. Tool is only to be used as stated in this manual. Any other use is prohibited.
10. Read MSDS Specifications before servicing the tool. MSDS specifications are
available from the product manufacturer or your Huck representative.
11. Only genuine Huck parts shall be used for replacements or spares. Use of any
other parts can result in tooling damage or personal injury.
12. Never remove any safety guards or pintail deflectors.
13. Never install a fastener in free air. Personal injury from fastener ejecting may
occur.
14. Where applicable, always clear spent pintail out of nose assembly before
installing the next fastener.
15. Check clearance between trigger and work piece to ensure there is no pinch
point when tool is activated. Remote triggers are available for hydraulic
tooling if pinch point is unavoidable.
16. Do not abuse tool by dropping or using it as a hammer. Never use hydraulic
or air lines as a handle or to bend or pry the tool. Reasonable care of
installation tools by operators is an important factor in maintaining tool
efficiency, eliminating downtime, and preventing an accident which may
cause severe personal injury.
17. Never place hands between nose assembly and work piece. Keep hands clear
from front of tool.
18. Tools with ejector rods should never be cycled with out nose assembly
installed.
19. When two piece lock bolts are being used always make sure the collar
orientation is correct. See fastener data sheet for correct positioning.
II. PROJECTILE HAZARDS:
1. Risk of whipping compressed air hose if tool is pneudraulic or pneumatic.
2. Disconnect the assembly power tool from energy source when changing
inserted tools or accessories.
3. Be aware that failure of the workpiece, accessories, or the inserted tool itself
can generate high velocity projectiles.
4. Always wear impact resistant eye protection during tool operation. The grade
of protection required should be assessed for each use.
5. The risk of others should also be assessed at this time.
6. Ensure that the workpiece is securely fixed.
7. Check that the means of protection from ejection of fastener or pintail is in
place and operative.
8. There is possibility of forcible ejection of pintails or spent mandrels from front
of tool.
III. OPERATING HAZARDS:
1. Use of tool can expose the operator’s hands to hazards including: crushing,
impacts, cuts, abrasions and heat. Wear suitable gloves to protect hands.
2. Operators and maintenance personnel shall be physically able to handle the
bulk, weight and power of the tool.
3. Hold the tool correctly and be ready to counteract normal or sudden
movements with both hands available.
4. Maintain a balanced body position and secure footing.
5. Release trigger or stop start device in case of interruption of energy supply.
6. Use only fluids and lubricants recommended by the manufacturer.
7. Avoid unsuitable postures, as it is likely for these not to allow counteracting of
normal or unexpected tool movement.
8. If the assembly power tool is fixed to a suspension device, make sure that
fixation is secure.
9. Beware of the risk of crushing or pinching if nose equipment is not fitted.
IV. REPETITIVE MOTION HAZARDS:
1. When using assembly power tool, the operator can experience discomfort in
the hands, arms, shoulders, neck or other parts of the body.
2. When using tool, the operator should adopt a comfortable posture while
maintaining a secure footing and avoid awkward or off balanced postures.
3. The operator should change posture during extended tasks to help avoid
discomfort and fatigue.
4. If the operator experiences symptoms such as persistent or recurring
discomfort, pain, throbbing, aching, tingling, numbness, burning sensations or
stiffness, these warnings should not be ignored. The operator should tell the
employer and consult a qualified health professional.
V. ACCESSORIES HAZARDS:
1. Disconnect tool from energy supply before changing inserted tool or
accessory.
2. Use only sizes and types of accessories and consumables that are
recommended. Do not use other types or sizes of accessories or consumables.
VI. WORKPLACE HAZARDS:
1. Be aware of slippery surfaces caused by use of the tool and of trip hazards
caused by the air line or hydraulic hose.
2. Proceed with caution while in unfamiliar surroundings; there could be hidden
hazards such as electricity or other utility lines.
3. The assembly power tool is not intended for use in potentially explosive
environments.
4. Tool is not insulated against contact with electrical power.
5. Ensure there are no electrical cables, gas pipes, etc., which can cause a hazard
if damaged by use of the tool.
VII. NOISE HAZARDS:
1. Exposure to high noise levels can cause permanent, disabling hearing loss
and other problems such as tinnitus, therefore risk assessment and the
implementation of proper controls is essential.
2. Appropriate controls to reduce the risk may include actions such as damping
materials to prevent workpiece from ‘ringing’.
3. Use hearing protection in accordance with employer’s instructions and as
required by occupational health and safety regulations.
4. Operate and maintain tool as recommended in the instruction handbook to
prevent an unnecessary increase in the noise level.
5. Select, maintain and replace the consumable / inserted tool as recommended
to prevent an unnecessary increase in noise.
6. If the power tool has a silencer, always ensure that it is in place and in good
working order when the tool is being operated.
VIII. VIBRATION HAZARDS:
1. Exposure to vibration can cause disabling damage to the nerves and blood
supply to the hands and arms.
2. Wear warm clothing when working in cold conditions and keep hands warm
and dry.
3. If numbness, tingling, pain or whitening of the skin in the fingers or hands,
stop using the tool, tell your employer and consult a physician.
4. Support the weight of the tool in a stand, tensioner or balancer in order to
have a lighter grip on the tool.
IX. PNEUMATIC / PNEUDRAULIC TOOL SAFETY INSTRUCTIONS:
1. Air under pressure can cause severe injury.
2. Always shut off air supply, drain hose of air pressure and disconnect tool
from air supply when not in use, before changing accessories or when making
repairs.
3. Never direct air at yourself or anyone else.
4. Whipping hoses can cause severe injury, always check for damaged or loose
hoses and fittings.
5. Cold air should be directed away from hands.
6. Whenever universal twist couplings (claw couplings) are used, lock pins shall
be installed and whip-check safety cables shall be used to safeguard against
possible hose to hose or hose to tool connection failure.
7. Do not exceed maximum air pressure stated on tool.
8. Never carry an air tool by the hose.
Safety Instructions
GLOSSARY OF TERMS AND SYMBOLS:
- Product complies with requirements set forth by
the relevant European directives.
- Read manual prior to using this equipment.
- Eye protection is required while using this
equipment.
- Hearing protection is required while using this
equipment.
Notes: are reminders of required procedures.
Bold, Italic type, and underline: emphasize a specific
instruction.
WARNINGS: Must be understood to avoid
severe personal injury.
CAUTIONS: Show conditions that will damage
equipment or structure.

4
246 Pneudraulic Installation Tool (HK825)
STROKE: 0.875 in (2.22 cm)
WEIGHT: 11.1 lbs (5.03 kg)
MAX AIR PRESSURE: 110 psi (7.6 bar)
MAX FLOW RATE: 22.4 scfm (850 l/m)
POWER SOURCE: 90–100 psi (6.2–6.9 bar) maximum
shop air
MAX OPERATING TEMP: 125° F (51.7° C)
PULL CAPACITY: 9986 lbs @ 90 psi
(44.42 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 uid shall meet
DEXRON®III, DEXRON VI, MERCON®, Allison C-4
or equivalent Automatic Transmission Fluid (ATF)
specications. Fire-resistant uid may be used if it
is an ester-based uid such as Quintolubric®HFD or
equivalent. Water-based uid shall NOT be used as
serious damage to equipment will occur.
4°
1.9
(4.8)
0.7
(1.8)
8.8
(22.3)
15.0
(38.1)
6.1
(15.6)
6.1
(15.5)
3.9
(10.0)
Ø
Ø
SpecificationS
DEXRON is a registered trademark of General Motors Corp.
MERCON is a registered trademark of Ford Motor Corp.
Quintolubric is a registered trademark of Quaker Chemical Corp.

5
246 Pneudraulic Installation Tool (HK825)
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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 uid 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 it and the hydraulic piston rod to
move downward.
The air from below the piston is exhausted through the
bottom of the tool. The piston and hydraulic rod move
downward, hydraulic pressure is reversed, and the pull
piston is returned forward. The Damper Valve restricts
the ow of uid at pin break, thus preventing “tool kick.”
The reservoir replenishes the hydraulic system as
needed.
principle of operation

6
246 Pneudraulic Installation Tool (HK825)
preparation for USe
The 246 tool ships with a plug in the air inlet connector.
The connector has 1/4”-18 female pipe threads to
accept the air hose tting. Huck recommends quick-
disconnect ttings and a 1/4” inside-diameter air
hose. The air supply should be have a lter-regulator-
lubricator unit and access to a 110 psi (7.6 bar) air
supply capable of a ow rate of 22.4 scfm (850 l/m).
NOTE: Air quick-disconnect ttings 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 uid.
2. Screw the quick-disconnect tting into the air inlet
connector.
3. Set the air pressure on the regulator to 90–100 psi
(6.2–6.9 bar), and connect the air hose to the air
inlet connector and the tool.
4. Press and release the trigger a few times to cycle
the tool.
5. Disconnect the air hose from the tool, and remove
the retaining nut and stop. Select the proper nose
assembly for the fastener being installed.
6. Screw the collet assembly (including the lock collar
and shim if applicable) onto the spindle and tighten
with a wrench.
7. Slide the anvil over the collet assembly and into the
counterbore. Slide the stop and retaining nut over
the anvil, and screw the nut onto the head.
8. Connect the air hose to the tool and install fasteners
in a test plate of proper thickness with proper size
holes. Inspect the fasteners.
If fasteners do not pass inspection, see TroubleshooTing
to investigate possible causes.
NOTE: On older nose assemblies with lock collars,
use Loctite® 243™ on collet threads, because the
246 pull piston does not have staking holes. Refer
to the nose assembly drawings that shipped with
nose assemblies.
CAUTION: Do not use TEFLON®tape
on pipe threads. Tape can shred and
break free into uid lines, resulting in
malfunctions. Threadmate® is available in a
4oz. tube from Huck (P/N 508517).
Threadmate is a registered trademark of Parker Intangibles, LLC.
Loctite is a registered trademark of Henkel Corporation, U.S.A.
TEFLON is a registered trademark of E. I. du Pont de Nemours and
Company.

7
246 Pneudraulic Installation Tool (HK825)
Maintenance
GENERAL
The operating efciency of your tool is directly related
to the performance of the entire system. Regular
inspection and the immediate correction of minor
problems will keep the tool operating efciently,
and prevent downtime. A schedule of “preventive”
maintenance of the tool, nose assembly, hoses, trigger
and control cord, and POWERIG®will ensure your tool’s
proper operation and extend its life.
NOTE: Huck tools should be serviced only by
personnel thoroughly familiar with its operation.
• Service the tool in a clean, well-lighted area. Take
special care to prevent contamination of pneumatic
and hydraulic systems.
• Have available all necessary hand tools—standard
and special.
• Carefully handle all parts. Before reassembly,
examine them for damage and wear.
• Disassemble and assemble tool components in a
straight line. Do NOT bend, cock, twist, or apply
undue force.
• Have the appropriate Spare Parts Service
Kit (246KIT) available when servicing the tool;
it includes important perishable parts. Other
components, as experience dictates, should also be
available. See KiTs & Accessories.
• Apply Loctite®243 Threadlocker (Huck P/N 508567)
to gland threads. Apply Loctite®271-05 (Huck P/N
503657) to nuts.
• Smear LUBRIPLATE®130-AA (Huck P/N 502723)
or SUPER-O-LUBE®(Huck P/N 505476) on O-rings,
Quad-rings, Back-up rings, and mating parts to ease
assembly.
• Apply Parker Threadmate®, Loctite®567, or Slic-Tite®
(per manufacturer’s instructions) to male pipe threads
and quick-connect ttings.
For supplementary information, see TroubleshooTing,
and the DisAssembly and Assembly procedures in this
manual.
DAILY
• If a Filter-Regulator-Lubricator unit is not being used,
uncouple the air disconnects and add a few drops of
hydraulic uid or a light-weight oil to the air inlet of
the tool.
NOTE: If the tool is in continuous use, add a few
drops of oil in every 2–3 hours.
• Before connecting an air hose to the tool, clear the
air lines of dirt and water.
• Check all hoses and couplings for damage and air
leaks; tighten or replace if necessary.
• Check the tool and nose assembly for damage and
air or hydraulic leaks; tighten, repair, or replace if
necessary.
• Inspect the tool, hoses, and POWERIG during
operation to detect abnormal heating, leaks, or
vibration.
• Clean nose assemblies in mineral spirits to clear jaws
and rinse metal chips and dirt. For a more thorough
cleaning, disassemble the nose assembly. Use a
pointed “pick” to remove embedded particles from
the pull grooves of the jaws.
Clean all parts of any assembly with UNITIZEDTM
Jaws in mineral spirits or isopropyl alcohol only; do
not let jaws come in contact with other solvents.
Do not let jaws soak; dry them immediately after
cleaning. Huck recommends drying other parts
before re-assembling.
WEEKLY
• Disassemble, clean, and re-assemble nose assembly
in accordance with applicable instructions.
• Check the tool and all connecting parts for damage
and uid/air leaks; tighten or replace if necessary.
CAUTION: Replace all seals, wipers,
O-rings and Back-up rings when the tool is
disassembled for any reason, and at regular
intervals, depending on severity and length
of use.
Loctite is a registered trademark of Henkel Corporation, U.S.A.
LUBRIPLATE is a registered trademark of Fiske Brothers Rening Co.
Slic-tite is a registered trademark of LA-CO Industries, Inc.
SUPER-O-LUBE is a registered trademark of Parker Hannin Corp.
Threadmate is a registered trademark of Parker Intangibles LLC.
Teon is a registered trademark of E. I. du Pont de Nemours and Company.
CAUTION: Do not use TEFLON®tape
on pipe threads. Tape can shred and
break free into uid lines, resulting in
malfunctions.

8
246 Pneudraulic Installation Tool (HK825)
operating inStrUctionS
Read all of these instructions in order to ensure the safe operation of this equipment.
This section details installing LockBolt®and Huck Blind
Fasteners. Review CAUTIONs and WARNINGs before
installing these fasteners. If the tool malfunctions,
consult TroubleshooTing before attempting any repairs.
NOTE: Reasonable care of tools by operators is
an important factor in maintaining efciency and
reducing downtime.
TO INSTALL A LOCKBOLT FASTENER:
1. Place a pin in the workpiece and place the collar
over the pin.
NOTE: If collar has one tapered end, that end
must be out toward tool; not next to the sheet.
2. Hold the pin in the hole and push the nose
assembly onto the pin protruding through the collar
until the nose anvil touches the collar.
3. Press and hold the trigger until the collar is swaged
and the pintail breaks.
4. Release the trigger; the tool will perform its
RETURN stroke.
The pressure is re-directed; the piston moves forward;
and the tool is pushed off the fastener and ready for the
next installation cycle.
TO INSTALL A HUCK BLIND FASTENER:
1. Place a fastener in the workpiece or in the end of
the nose assembly.
NOTE: The tool or nose assembly must be
held against, and at a right angle (90°) to, the
workpiece.
2. Press and hold the trigger until the fastener is
installed and the pintail breaks.
3. Release the trigger; the tool will perform its
RETURN stroke.
The pressure is re-directed; the piston moves forward;
and the tool is pushed off the fastener and ready for the
next installation cycle.
WARNINGS:
Inspect tools for damage and wear before
using. Do not use if damaged or worn;
serious personal injury may occur.
Pulling a pin without a collar, or with collar
chamfer against workpiece, may result in
the pin becoming a high-speed projectile
when the pin grooves are stripped or the
pintail breaks off. Serious personal injury
may occur to anyone in the pin’s “ight
path.” This includes pins that ricochet.
Broken pintails eject from the deector
with speed and force. To reduce the risk of
serious personal injury, be sure the pintail
deector is properly attached and directed
away from all personnel. Replace damaged
pintail deectors.
CAUTION: Make sure the tool is properly
re-assembled before use.
CAUTION: Remove excess gap from
between the sheets to permit proper
fastener installation and prevent jaw
damage. ALL jaw teeth must engage the
pintail to avoid damaging the teeth.
WARNINGS:
• Wear approved eye and hearing
protection.
• Ensure adequate clearance for
operator’s hands before installing
fasteners.
• Be sure that the pintail deector is
properly attached to the tool and
directed away from all personnel.
• Do not pull on a pin without placing a
fastener in a workpiece. Make sure that
the collar chamfer is out, towards the
tool. Pins eject with great velocity when
pnntails break off or teeth/grooves strip,
which could cause serious injury.
CAUTION:
• To avoid structural and tooI damage, be
sure there is sufcient clearance for the
nose assembly at full stroke.
• Remove excess gap from between
the sheets to permit proper fastener
installation and prevent jaw damage.
ALL jaw teeth must engage the pintail to
avoid damaging the teeth.

9
246 Pneudraulic Installation Tool (HK825)
DiSaSSeMbly
This procedure is for complete disassembly of the tool.
Disassemble only those components necessary to
replace damaged O-rings, Quad-rings, Back-up rings,
and worn or damaged components. For component
identication, see Figures 1–4, 9, and 10.
1. Disconnect the tool from the air source, and remove
the air hose from the cylinder.
2. Remove nose assembly. Follow instructions on
Nose Assembly Data Sheet.
3. Remove screws and guard. (Figure 9)
4. Insert Fill Tool (P/N 112465) through the reservoir
housing and screw it into the reservoir plunger;
(Figure 1) lock it in the out position.
5. Unscrew 4 cap screws with a 5/32” hex key;
carefully separate head from handle. Remove pull
and return glands and seals.
6. Unscrew relief valve plug from the front of the head.
Remove spring, guide, ball, and sleeve. A small
magnet is helpful.
7. Unscrew bleed plug. Drain the uid into a container.
Discard uid.
8. Unscrew reservoir housing. Remove two springs,
and slide reservoir plunger out of the head. Remove
spacer and use a “pick” to remove the Quad-ring.
9. Unscrew plug from the side of the head. Then
remove spring, plunger, and ball. (Figure 1)
If check valve seat is damaged, contact your
Huck representative.
If seat is damaged, it can be removed by
using the following procedure. NOTE: If seat
is removed, it cannot be reused; it must be
replaced.
Seat removal: Remove all parts in the reservoir
check valve before removing plug. Unscrew
plug, insert a #10 screw in the thread of plug,
and pull to remove. Use a small drift and
hammer and, from the rear side of the head,
drive seat out towards the front of the head.
10. Pull the pintail deector off the deector tube at
rear of piston. Use a 1-9/16” open-end wrench to
unscrew the end cap from head.
WARNING: Disconnect the air hose
from the tool before performing any
maintenance. Serious personal injury could
result if the air hose is connected.
CAUTION: Take care to not scratch the
piston rod or cylinder when removing.
112491 End Cap Head Assy.
126079
(See Figure 10)
(See Figure 10)
112405
Reservoir
Plunger
112465 Fill
Tool Assembly
Fill Tool in the
“lock-out” posion.
501408
Quad Ring
123848 Spacer
125546
Housing 505864 Spring (2)
112502 Return Gland Assy
502929 Check Valve Ball
111067 Check Valve Guide
111079 Plug
120204 Plug
120129 Screw
100874 Spring
113532 Pull Gland Assy (See Figure 10)
114530 Relief Valve
Plug Assy
120128 Relief Valve Guide
120127 Sleeve
125642 Handle
500102 Cap Screw (4)
104293 Bleed
Plug Assembly
505863 Spring
502120 Relief Valve Ball
figUre 1
continued...

10
246 Pneudraulic Installation Tool (HK825)
DiSaSSeMbly (continUeD)
11. Thread the Assembly Bullet (P/N 120792) onto
piston. (Figure 2) Push the piston out the back of
the head. Remove wiper and Polyseal.
NOTE: This will push out rear gland assembly.
12. Remove screw from throttle arm, and then remove
the throttle arm. Remove the throttle valve and
spring from the cylinder. (Figure 9)
13. Use a small punch and hammer to drive out roll pin.
Remove the trigger pin, and remove the trigger and
cable from the handle. (Figure 9)
14. Remove the bleed plug from the handle.
15. Secure the tool upside-down in a soft-jaw vise, and
remove three button-head screws from the mufer
end cap with a 1/8” hex key. (Figure 3)
16. Remove the mufer end cap, bottom exhaust
gasket, mufer, and O-ring. (Figure 3)
17. Remove the retaining ring from the cylinder.
18. Screw button-head screws into cylinder head, and
carefully pry on them to remove the cylinder head.
(Figure 3)
19. Push air piston all the way down in the cylinder,
remove tool from vise, and lay on its side. Hold self-
locking nut with a 9/16” socket and extension, and
use a 7/64” hex key to remove the piston screw.
(Figures 4 & 9)
20. Secure the cylinder assembly and handle assembly
upside-down in a vise again.
21. Use pliers to grip the self-locking nut and pull out
the air piston and rod assembly from the handle and
cylinder assemblies.
22. Use a 1-3/8” socket and extension to remove
the gland assembly. The handle and cylinder
assemblies will now separate.
23. Push the hydraulic piston out of the handle.
24. Remove and replace seals from the gland
assembly, if necessary. (Figure 10)
The tool has been properly disassembled. Store all
re-usable parts (screws and disassembled components)
in a clean, dry area.
WARNING: Do NOT re-use seals, wipers, or
rings; irreparable tool damage could occur.
Discard these parts and use replacements
(see KiTs & Accessories).
CAUTION: Take care to not scratch the
piston, rod, or cylinder when removing.
504127 Buon
Head Screw (3)
116585 Muffler
End Cap
505025 Retaining Ring
126941-2 Gasket
115554 Muffler
500777 O-ring
111959 Cylinder Head
115556 Cylinder Assy.
116173 Gland Assy.
130324 Handle & Sleeve Assy.
500873 O-ring
100315 Air Piston
130296 Piston Rod
500905 O-ring
(See Figure 9)
(See Figure 9)
figUre 3
CAUTION: Use a plastic or wooden drift to
avoid damaging the handle bore.
CAUTION: Always use a soft-jaw vise to
avoid damaging the tool.
505865 Polyseal
120792 Piston
Assembly Tool
505894 Wiper Seal figUre 2

11
246 Pneudraulic Installation Tool (HK825)
aSSeMbly
BEFORE RE-ASSEMBLING THE TOOL:
Clean components with mineral spirits or a similar solvent.
Inspect for wear/damage; replace as necessary. Replace all seals
of disassembled components. Use the O-rings, Quad-rings,
and Back-up Rings from Spare Parts Kit (P/N 246KIT). When
assembling the tool, take care not to damage rings. Smear
LUBRIPLATE®130-AA (Huck P/N 502723) or SUPER-O-LUBE®
(Huck P/N 505476) on rings and mating parts to ease assembly.
1. Secure handle upside-down in a soft-jaw vise. (Figure 3)
Place inverted cylinder on the base of the handle (the
timing pin maintains orientation). Assemble gland assembly
with new seals. Screw the assembly into the head and use a
1-3/8” socket wrench to torque it to 100–120 ft.-lbs.
2. Clean piston rod threads; treat with Loctite®243™. Carefully
press assembled air piston and piston rod (with Quad-ring
in place) fully into cylinder.
3. Turn tool upright. Install Piston Assembly, with rings in
place, in handle. Press from top of handle without damaging
seals. (Figure 4)
4. Push screw with
O-ring in place
through piston and
screw into top of
piston rod. Hold
self-locking nut with
a 9/16” socket and
extension, and use
a 7/64” hex key to
torque the screw to
55–60 ft.-lbs.
5. Secure the head
upside-down in
a vise. Push the
cylinder head
squarely into the
cylinder, taking
care not to damage
O-ring. Install the retaining ring; align the screw holes with
the muffler end cap. (Figure 3)
6. Position O-ring and muffler in center of the cylinder head.
Position gasket on cylinder assembly, taking care to note
the direction of the lip in Figure 3.
7. Carefully position muffler end cap on the cylinder, making
sure it is properly positioned in the recess of the bottom
plate. Secure muffler end cap with the three button head
screws using a 1/8” hex key.
8. Place tool upright on a level surface. Drop spring into
throttle valve hole in cylinder, and push throttle valve (with
O-rings in place) into cylinder. (Figure 9)
9. Assemble trigger, cable, and trigger pin, and slide cable into
handle. Align hole in trigger with hole in handle and install
roll pin with a hammer and punch.
10. Slide the throttle arm onto the ball end of the throttle
cable. Swing the arm until the other end fits over the
throttle valve. Push the screw through the throttle arm and
tighten with 5/32” hex key.
11. Re-attach air hose assembly if it was removed. NOTE: If
replacing the check valve seat: Push plug, with O-ring &
Back-up Ring in place, into the head; insert and tighten
screw.
12. Install O-ring and Back-up Ring onto seat. Drive in the seat
assembly using a soft drift, taking care not to damage the
ball seat surface.
13. Assemble the pull piston with new seals that have been
lubricated with LUBRIPLATE®130-AA or SUPER-O-LUBE®.
14. Install wiper and Polyseal in head. (Figure 2) Thread the
Assembly Bullet onto the pull piston and push entire
assembly into the head.
15. Install O-rings and Back-up rings on rear gland, and push
entire assembly into head; screw in and tighten end cap.
(Figure 9)
16. Install O-ring and Back-up ring on plug. Install the ball,
guide, sleeve, spring, and plug into head. (Figures 1 & 9)
17. Install O-ring on plug. Install ball, guide, spring, and plug into
head.
18. Push pintail deflector onto deflector tube. (Figure 9)
19. Place O-ring on plug, and screw assembly into handle.
20.Install O-rings and Back-up rings on Pull and Return glands.
Push gland assemblies into handle. Push the head down
onto glands. (Figure 5)
21. Place tool
upside-
down in a
vise and
install 4
screws;
torque to
170 in-lbs.
The tool is now assembled and must be filled with hydraulic
fluid prior to use. See the F  B section.
118866 Intensifier
Piston Assembly
(see Figure 10)
121241 Self-
Locking Nut
Figure
4
120354 Head Assy.
113532 Pull
Gland Assy.
112502 Return
Gland Assy.
125642 Handle
& Sleeve Assy.
500102 Cap Screws (4)
Figure 5

12
246 Pneudraulic Installation Tool (HK825)
fill anD bleeD
This section documents the “bleed-&-ll” procedure. For
component identication, see Figures 6, 7–8.
REQUIRED EQUIPMENT
• DEXRON®III or equivalent ATF (See specificATions
for more information.)
• Shop air-line with 90–100 psi (6.2–6.9 bar) max.
• Air regulator
• Fill Bottle Assembly (P/N 120337, included with tool)
• Fill Tool (P/N 112465, included with tool)
• Large at-blade screwdriver
• Nose assembly or optional stall nut (P/N 120824)
• Fasteners (optional)
PREPARATION
• Install air regulator in the air-
line and set the pressure to
20–40 psi (1.4–2.8 bar).
• Add an approved hydraulic
uid to the ll point of the ll
bottle.
NOTE: Rell the tool only
when the uid level drops
below the red line on the
reservoir housing; or when
the tool is rebuilt.
TO BLEED AND FILL THE TOOL:
1. Screw the Fill Tool into the reservoir plunger. Pull
the plunger into the reservoir housing and lock
the Fill Tool in the full-
forward position by tilting
the handle (long side
touching tool) and locking
it in place. (Figure 7)
2. Remove the relief valve
plug and check valve
plug (Figure 7), as well
as all guides, springs,
and balls, from the ports
in the head. Re-insert the
relief valve plug.
3. Screw the retaining nut
onto head assembly, and
screw the (optional) stall
nut onto the hydraulic
piston. Tighten to ensure
full thread engagement. Unscrew the retaining nut
until it engages the stall nut. Verify that the piston is
full-forward and locked with the retaining nut (and,
optionally, with the stall nut).
NOTE: If the stall nut is not used, the piston
must be in the full-forward position before
installing the valves.
4. Connect the tool to the air source to seat the
air piston at the bottom of the air cylinder; then
disconnect. Lay the tool on its side with the check
valve hole facing up.
5. Insert the ll bottle in the check valve hole. (Figures
7 & 8).
6. Connect the tool to the air supply and cycle it 20–30
times; watch for air bubbles escaping into the bottle.
(Rock the tool to free trapped air.)
NOTE: Do not allow air to re-enter the tool.
When cycling the tool, always hold the ll bottle
as shown in Figure 8 to prevent drawing in air.
7. When air bubbles stop accumulating in the ll bottle,
stop cycling the tool. Remove the bottle and install
the check valve ball, guide, and spring. Replace the
check valve plug.
WARNING: Avoid contact with hydraulic
uid. Hydraulic uid must be disposed of
in accordance with local regulations. See
MSDS for hydraulic uid shipped with tool.
120336
Fill Bole
Fill Point
120004
Cap
120337 Fill Bole Assy
figUre 6
112465 Fill Tool
120824 Stall Nut 117824 Retaining Nut
Red Line
Indicator
104293 Bleed
Plug Assembly
505863 Spring
114530 Relief
Valve Plug Assy
502120 Relief Valve Ball
120128 Relief Valve Guide
120127 Sleeve
502929 Check Valve Ball
111067 Check Valve Guide
111079 Check Valve Plug
100874 Spring
125642
Handle
figUre 7
CAUTION: All uid must be purged from
the tool before relling. The tool stroke will
be diminished if the uid is aerated.
WARNING: Air pressure must be set at
20–40 psi (1.4–2.8 bar) to prevent possible
injury from high-pressure spray.
If the plug is removed, the ll bottle must
be in place before cycling the tool.
continued...

13
246 Pneudraulic Installation Tool (HK825)
8. Turn the tool so the front of the head faces you. Use
a 3/32” allen wrench to back out (approximately 1/2
turn counterclockwise) the setscrew that is inside the
relief valve plug; this ensures that the piston remains
in the full-forward position. (Figure 7A) Remove the
relief valve plug; insert the ball, guide, sleeve, and
spring, and then re-insert the plug and re-tighten the
setscrew.
9. Unlock the Fill Tool and check the uid level (Red
Line Indicator, Figure 7) in the reservoir housing.
Cycle the tool with the optional stall nut attached and
the retaining nut locked in the full-forward position
(“dead stall”).
NOTE: Dead Stalling is not necessary if the stall
nut was not used; just cycle tool.
If the uid level in the reservoir housing drops below the
red line, repeat the following “ll” procedure until the uid
level is sufcient.
NOTE: This usually requires 3 or 4 repetitions.
a. Lock the Fill Tool into the reservoir plunger. Lay the
tool on its side and remove check valve plug.
b. Insert the ll bottle and add a few drops of uid to
the reservoir; wait for air bubbles to escape, then
remove the ll bottle. (Push a pin or a scribe into the
check valve hole to check for trapped air bubbles.)
c. Replace the check valve plug.
d. Unlock the Fill Tool, cycle the tool as in step 9, and
check the uid level in the reservoir housing.
The reservoir uid level may drop slightly. If so,
repeat these steps until, when the Fill Tool handle
is touched, it has no pressure against it and it drops
out of the lock position, and the uid level in the
reservoir housing does not drop when the tool is
cycled.
When the uid level is sufcient, remove the Fill Tool
and stall nut. Install a nose assembly and pull several
fasteners to test function.
fill anD bleeD (continUeD)
SECTION A-A
(from Figure 9)
Using a 3/32” Allen
wrench, loosen
setscrew inside Plug
by approx. 1/2 turn.
figUre 7a
114530 Relief
Valve Plug Assy.
figUre 8
WARNING: Make sure the Fill Tool is
locked in place; otherwise, pressurized
uid could be ejected from the tool when
lling the reservoir. This could cause
serious personal injury.

14
246 Pneudraulic Installation Tool (HK825)
tool coMponentS
127029
Bushing &
Screw Assy
This view is shown without Throttle Guard for clarity
127029
Bushing &
Screw Assy
127029
Bushing &
Screw Assy
127688
Throttle Arm
125657
Guard
104293 Bleed
Plug Assy
502482
Screws (2)
500102
Screws (4)
120354
Cylinder
Head Assy
500621 Roll Pin
505496 Dowel Pin
124333-2 Trigger
125643 Cable Assy
130268 Handle/Sleeve Assy
See Figure 10
108279 Pintail Tube
120334 Piston Assy
See Figure 10
110670 Stop
117824 Retaining Nut
505894 Wiper
117824 Retaining Nut
505894 Wiper
505865 Polyseal (Note orientation)
120109 Rear Gland Assy
See Figure 10
131055 PULL
Gland Assy See Figure 10
112502 RETURN
Gland Assy See Figure 10
112491 Cylinder Cap
Torque to 36-66 ft lbs
124209 Deflector
113526 Air
Piston Assy
contains
500917
O-Ring
130305 Air
Piston Rod
127326 Handle/Cylinder
Gland Assy
See Figure 10
130936 Intensifier
Piston Assy See Figure 10
113528 Air
Cylinder Assy
contains
505147
O-Ring
115436 Air
Hose Assy
502053 Setscrew
127888
Throttle Valve
504408
O-rings (2)
505139
Retaining
Ring
126941-3
Gasket 500101
Screws (4) 115554
Muffler 500777 O-Ring 116272
Spring
120076
End Cap 121241 Lock Nut
Torque to 28-32 ft lbs
504407
O-Ring
Ball-end of Cable Assembly
Handle/Cylinder Timing Pin
120372
Air Cylinder
Assembly
131055 PULL
Gland Assy See Figure 10
AA
figUre 9

15
246 Pneudraulic Installation Tool (HK825)
tool HeaD anD aSSeMblieS
112502 RETURN Gland Assembly
120109 Rear Gland Assembly
129944
Polyseal
Note
orientation.
Rear Gland
113253
Back-up Ring
505887 O-Ring
501084 Back-up Ring
503768 O-Ring
Intensifier Piston
130936 Intensifier Piston Assembly
Apply Loctite®243 ™
to screw threads, and
torque to 175-195 in-lbs.
Not sold separately.
500778
O-Ring
501084
Back-up
Ring
500776
O-Ring
Gland Housing Not sold separately.
501082
Back-up
Ring
131055 PULL Gland Assembly
500784
O-Ring
500776
O-Ring
Gland Housing Not sold separately.
501082
Back-up
Ring
SECTION A-A
(Rotated 90° CCW)
Reservoir
Plunger
112405
Check Valve Ball
502929
Check Valve Guide
111067
111079
Check
Valve Plug
120204
Plug
100874 Spring
111139 Check
Valve Seat
120129 Screw
104293 Bleed
Plug Assy
508481 Setscrew
Not sold separa tely.
Bleed Plug
505438
O-ring
104293 Bleed Plug Assembly
127326 Handle/Cylinder Gland Assembly
502821
Retaining Ring
500779 O-Ring
127324 Gland
127329 Polyseal
127325
Gland Housing
500786 O-Ring
Apply Anti-seize compound to screw threads, and torque to 36-66 ft-lbs.
Note orientation.
500781 O-Ring
127328 Back-up Ring
500784 O-Ring
127327 Back-up Ring
Not sold
separately.
505864 Spring (2)
114530 Relief Valve Plug Assy
501082 Back-up Ring
505446 O-Ring
505863 Spring 120127
Sleeve
120128 Relief Valve Guide
112403 Housing/Spacer Assy
Contains 125546 Housing & 123848 Spacer
Torque to 12-15 ft.lbs.
505446 O-Ring
501408
Quad Ring
501082 Back-up Ring
505120 Relief Valve Ball 114537 Seat & Seals Assy
Assemble or dissasemble
through front of head only
Hydraulic Piston
Not sold separately.
120334 Hydraulic Piston Assembly
113251 Back-up Rings
500851 O-Ring
120325 Tube
501084 Back-up Ring
501408
Quad Ring
figUre 10

16
246 Pneudraulic Installation Tool (HK825)
troUbleSHooting
Always check the simplest possible cause (such as a loose or disconnected trigger line) of a malfunction rst. Then
proceed logically, eliminating other possible causes until the cause is discovered. Where possible, substitute known
good parts for suspected defective parts. Use this Troubleshooting information to aid in locating and correcting
trouble.
NOTE: “Piston drift” is when the air piston is in the down position, but the hydraulic pull piston is not in the
full-forward position. This causes an out-of-sequence condition.
1. Tool fails to operate when trigger is pressed.
a. Air-line not connected.
b. Worn or damaged throttle valve O-rings.
c Broken throttle valve cable.
2. Tool does not complete fastener installation and
break pintail.
a. Air pressure too low.
b. Worn or damaged air piston Quad-ring.
c. Tool is low on hydraulic uid. See the fill AnD
bleeD section.
d. Air in hydraulic system. See the fill AnD bleeD
section.
e. Worn or damaged reservoir springs.
f. Check for piston drift.
3. Pintail stripped and/or swaged collar not
ejected.
a. Check for broken or worn jaws in nose
assembly. See Nose Assembly Data Sheet.
b. Check for loose retaining nut.
c. Check for piston drift.
4. Hydraulic uid exhausts with air or leaks at
base of handle.
a. Worn or damaged gland assembly. Inspect
Polyseal and rings. Replace if necessary.
5. Tool has piston drift.
a. Loose collet crashing into the front of the anvil
causing the relief valve to open. Tighten the
collet. See the fill AnD bleeD section.
b. Worn or damaged return pressure relief valve.
Inspect seat, rings, ball, and valve spring.
Replace if necessary.
c. Worn or damaged Piston Assembly. Inspect all
rings. Replace if necessary.
6. Hydraulic uid leaks at rear of pull piston.
a. Worn or damaged rear gland. Inspect O-rings
and Back-up rings. Replace if necessary.
7. Hydraulic uid leaks at front of pull piston.
a. Worn or damaged front gland. Inspect Polyseal.
Replace if necessary.
8. Pull piston will not return.
a. Throttle valve stuck; lubricate O-rings.
b. Throttle arm, cable, or trigger binding.
9. Air leaks at air cylinder head.
a. Worn or damaged O-ring. Replace if necessary.
KitS &acceSSorieS
Huck has created product-specic Spare Parts Service Kits that contain various perishable parts. The types and
quantities of spare parts that should be available vary 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.
KITS
service KiT - 246KIT
ACCESSORIES
Polyseal Assembly Tool - 120792
Pintail Bag - 125655
Fill Bottle Assembly - 120337
Stall Nut - 120824

17
246 Pneudraulic Installation Tool (HK825)
Tooling WArrAnTy:
Huck warrants that tooling and other items (excluding
fasteners, and hereinafter referred as “other items”)
manufactured by Huck shall be free from defects in
workmanship and materials for a period of ninety (90)
days from the date of original purchase.
WArrAnTy on “non sTAnDArD or cusTom
mAnufAcTureD proDucTs”:
With regard to non-standard products or custom manu-
factured products to customer’s specications, Huck
warrants for a period of ninety (90) days from the date
of purchase that such products shall meet Buyer’s
specications, be free of defects in workmanship and
materials. Such warranty shall not be effective with
respect to non-standard or custom products manufac-
tured using buyer-supplied molds, material, tooling and
xtures that are not in good condition or repair and
suitable for their intended purpose.
THERE ARE NO WARRANTIES WHICH EXTEND
BEYOND THE DESCRIPTION ON THE FACE
HEREOF. HUCK MAKES NO OTHER WARRANTIES
AND EXPRESSLY DISCLAIMS ANY OTHER
WARRANTIES, INCLUDING IMPLIED WARRANTIES
AS TO MERCHANTABILITY OR AS TO THE
FITNESS OF THE TOOLING, OTHER ITEMS,
NONSTANDARD OR CUSTOM MANUFACTURED
PRODUCTS FOR ANY PARTICULAR PURPOSE
AND HUCK SHALL NOT BE LIABLE FOR ANY
LOSS OR DAMAGE, DIRECTLY OR INDIRECTLY,
ARISING FROM THE USE OF SUCH TOOLING,
OTHER ITEMS, NONSTANDARD OR CUSTOM
MANUFACTURED PRODUCTS OR BREACH
OF WARRANTY OR FOR ANY CLAIM FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Huck’s sole liability and Buyer’s exclusive remedy
for any breach of warranty shall be limited, at Huck’s
option, to replacement or repair, at FOB Huck’s plant,
of Huck manufactured tooling, other items, nonstan-
dard or custom products found to be defective in speci-
cations, workmanship and materials not otherwise the
direct or indirect cause of Buyer supplied molds, mate-
rial, tooling or xtures. Buyer shall give Huck written
notice of claims for defects within the ninety (90) day
warranty period for tooling, other items, nonstandard
or custom products described above and Huck shall
inspect products for which such claim is made.
Tooling, pArT(s) AnD oTher iTems noT
mAnufAcTureD by hucK:
HUCK MAKES NO WARRANTY WITH RESPECT
TO THE TOOLING, PART(S) OR OTHER ITEMS
MANUFACTURED BY THIRD PARTIES. HUCK
EXPRESSLY DISCLAIMS ANY WARRANTY
EXPRESSED OR IMPLIED, AS TO THE CONDITION,
DESIGN, OPERATION, MERCHANTABILITY OR
FITNESS FOR USE OF ANY TOOL, PART(S), OR
OTHER ITEMS THEREOF NOT MANUFACTURED
BY HUCK. HUCK SHALL NOT BE LIABLE
FOR ANY LOSS OR DAMAGE, DIRECTLY OR
INDIRECTLY, ARISING FROM THE USE OF
SUCH TOOLING, PART(S) OR OTHER ITEMS OR
BREACH OF WARRANTY OR FOR ANY CLAIM FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
The only warranties made with respect to such tool,
part(s) or other items thereof are those made by the
manufacturer thereof and Huck agrees to cooperate
with Buyer in enforcing such warranties when such
action is necessary.
Huck shall not be liable for any loss or damage result-
ing from delays or non-fulllment of orders owing to
strikes, res, accidents, transportation companies or
for any reason or reasons beyond the control of the
Huck or its suppliers.
hucK insTAllATion equipmenT:
Huck International, Inc. reserves the right to make
changes in specications and design and to discon-
tinue models without notice.
Huck Installation Equipment should be serviced by
trained service technicians only.
Always give the Serial Number of the equipment when
corresponding or ordering service parts.
Complete repair facilities are maintained by Huck
International, Inc. Please contact one of the ofces
listed below.
Eastern
One Corporate Drive Kingston, New York 12401-0250
Telephone [phone] FAX [phone]
Outside USA and Canada
Contact your nearest Huck International Ofce, see
back cover.
In addition to the above repair facilities, there are
Authorized Tool Service Centers (ATSC’s) located
throughout the United States. These service centers
offer repair services, spare parts, Service Parts Kits,
Service Tools Kits and Nose Assemblies. Please con-
tact your Huck Representative or the nearest Huck
ofce listed on the back cover for the ATSC in your
area.
liMiteD WarrantieS

Arconic Inc. (NYSE: ARNC) creates breakthrough
products that shape industries. Working in close
partnership with our customers, we solve complex
engineering challenges to transform the way we fly,
drive, build and power.
Through the ingenuity of our people and cutting-
edge advanced manufacturing, we deliver these
products at a quality and efficiency that ensures
customer success and shareholder value.
Arconic Fastening Systems and Rings world-wide locations:
AMERICAS
Kingston Operations
1 Corporate Drive
Kingston, NY 12401
800-278-4825
845-331-7300
FAX: [phone]
Carson Operations
900 Watson Center Rd.
Carson, CA 90745
800-421-1459
310-830-8200
FAX: [phone]
Waco Operations
PO Box 8117
8001 Imperial Drive
Waco, TX 76714-8117
800-388-4825
254-776-2000
FAX: [phone]
Tucson Operations
3724 East Columbia
Tucson, AZ 85714
800-234-4825
520-747-9898
FAX: [phone]
Acuña Operations
Hidalgo #120
Parque Industrial Amistad
26220 Acuña Coahuila
Mexico
FAX: [phone]
TELEX: 1173530 LUKSME
EUROPE
Telford Operations
Unit C, Stafford Park 7
Telford, Shropshire
England TF3 3BQ
01952-290011
FAX: [phone]
Us Operations
BP4
Clos D’Asseville
95450 Us par Vigny
France
33-1-30-27-9500
FAX: [phone]
FAR EAST
Melbourne Operations
11508 Centre Road
Clayton, Victoria
Australia 3168
03-764-5500
Toll Free: 008-335-030
FAX: [phone]








Huck is Forever, For the Long Haul, The
Future of Fastening Technology, The Future of
Assembly Technology, The Future of Tooling
Technology, and Tools of Productivity are
service marks of Huck International. Huck
provides technical assistance regarding the use
and application of Huck fasteners and tooling.
NOTICE: The information contained in this
publication is only for general guidance
with regard to properties of the products
shown and/or the means for selecting such
products, and is not intended to create any
warranty, express, implied, or statutory;
all warranties are contained only in Huck’s
written quotations, acknowledgments, and/
or purchase orders. It is recommended that
the user secure specific, up-to-date data and
information regarding each application and/or
use of such products.
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