Sumake ST-6674 User manual

SUMAKE PNEUMATIC TOOLS
1/4"(6.4mm) Air Hydraulic Riveter
(Non-Vacuum Type)
ST-6674
SUMAKE INDUSTRIAL CO., LTD
4F,NO.351,Yangguang St.,Neihu District TAIPEI, TAIWAN, ZIP:114-91
Specification:
Riveting Capacity
3/32”, 1/8”, 5/32”, 3/16”, 1/4”
(2.4mm, 3.2mm, 4.0mm, 4.8mm, 6.4mm)
Stroke Length
5/8”(16mm)
Traction Power
2500 lbs (1140 kg)
Air Consumption
9 CFM (255 L/min)
Air Inlet (PT)
1/4” (6.35 mm)
Air Hose (I.D.)
3/8” (10 mm)
Air Pressure
90 psi (6.3 bar)
Net Weight
4.0 lbs (1.8 kg)
Noise and Vibration:
Vibration
EN ISO 20643
Noise
EN ISO 15744
Remark
Load:
< 2.5 m/s²
Sound Pressure Level
No load: 71.1 dB(A)
Please always
wear ear
protector at
environment
noise level >
80 dB(A) due
to risk of
impaired
hearing!
Sound power level
No load: 82.1 dB(A)
Uncertainty
K= 1.5 m/s²
Uncertainty
K= 3dB
ST-6674-S-2208D-FPF

EC DECLARATION OF CONFORMITY
We: SUMAKE INDUSTRIAL CO., LTD.
4F, No. 351, Yangguang St., Neihu District, Taipei City, Taiwan
declare in sole responsibility that the equipment
Equipment： 1/4"(6.4MM) AIR HYDRAULIC RIVETER (NON-VACUUM TYPE)
Model/ Serial No.：ST-6674
to which this declaration applies, complies with these normative documents:
Machinery Directive: 2006/42/EC
and conforms to the following EN standard,
EN ISO 12100: 2010
EN ISO 11148-1:2011
Name and Signature/Position Date and Place
2022/8/1
Mike Su – Managing Director Taipei, Taiwan
ST-6674-D-2208D-FPF

INSTRUCTION MANUAL
OPERATION
1. When the Lever/Trigger is depressed, the Throttle Valve is moved down off its seat by the Valve Tube.
Air enters the bottom of the Air Cylinder, forcing the PistonAssembly.As the PistonAssembly rises,
the Plunger Rod forces hydraulic fluid into the upper part of the Hydraulic Section , retracting the
Hydraulic Plunger. Meanwhile, the Jaws grip the mandrel of the rivet, pulling until the rivet is set and
breaking the mandrel in the process.
2. When the Lever/Trigger is released, the Throttle Valve resets and shuts off the air supply. The Valve
Tube Spring then lifts the Valve Tube and exhausts the air through the hollow of the Valve Tube. The
Return Spring returns the Hydraulic Plunger to its original position.This open the Jaws, releases the
mandrel, and retracts the PistonAssembly back to its original static site.
SERVICING PROCEDURES
1.CHANGING NOSEPIECES
Hook up the tool to the air line and depress the Lever/Trigger. While continuing to the Lever/Trigger
down, use the Multi-Wrench to remove the unwanted Nosepiece and tighten the new Nosepiece in
place again. When the Lever/Trigger is released and the tool is at rest, a circular opening should be
visible when looking through the Hydraulic Section from the Rear Gland to the Nosepiece.
2.CLEANINGAND CHANGING OF THE JAWS
Disconnect the tool from the air line and then remove the Head with the Multi-Wrench. Hold the Jaw
Housing Coupler firmly and remove the Jaw Housing. Clean the Jaws with either a steel brush or
solvent. If excessive wear is apparent, replace them with new Jaws. Before reassembling, apply a thin
coat of oil to the sliding surface of the Jaws. Reassemble the tool in the reverse order while making sure
that the chamfered end of the Jaw Pusher is in contact with the Jaws properly.
3.JAW OPENING ADJUSTMENT
To obtain the maximum stroke of the tool, proper distance-setting between the Jaw Housing and the
Head is very important. First loosen the Lock Nut.Arivet is then inserted into the Nosepiece which
should be selected to match the rivet size to be set. While screwing or unscrewing the Head to achieve
the minimum opening of the Jaws, check if the rivet mandrel can be removed and inserted freely. Fasten
the Lock Nut after the adjustment.
DAILY CARE
1.Check the tightness of the connections between the Jaw Housing Coupler,Nut,Jaw Housing and the
Hydraulic Plunger, the Nosepiece, the Head and the Lock Nut.
2.If the jaws show excessive wear and / or are dirty, follow the steps provided in the SERVICING
PROCEDURES section.
MALFUNCTION & REPAIR
A. Rivet mandrel is gripped bythe jaws but the rivet can not be set and mandrel can not be broken
CAUSE : Low air pressure or loss of hydraulic fluid.
REMEDY : Increase air pressure to 7 bar ( 100PSI ) maximum at tool. Make sure all fitting including
Rear Gland and Head are tightened. If malfunction persists, add hydraulic fluid as
follows:
Loosening the Lock Nut slightly and turn the tool upside down. Disassemble Air
Cylinder Body from the Hydraulic Section and remove the Head. Next, make sure that
the Hydraulic Plunger is at the bottom of its stroke. If it must be pulled to the bottom of
its stroke, replace the Return Spring.
Before adding hydraulic fluid, also check to see if any leaks appear in the Air Cylinder
Body, Head or Rear Gland, If fluid is found in any of these areas , replace the
appropriate O-Rings . Pour hydraulic fluid slowly into the Hydraulic Section until the
fluid level reaches the top of the Hydraulic Rod Guide. Wait a few seconds to allow any
air bubbles to escape.
Reassemble the tool in reverse order. Use extreme care to avoid damage to O-Rings.A
good rubber lubricant must be applied on the bearing surfaces of Plungers and cylinder
bores before re-assembly .A slow rotational movement coupled with gentle pressure will
aid in reinserting the Plungers.
NOTE: To achieve proper fluid level, Head must be removed when refilling. Use proper
hydraulic fluid
for the best performance of the tool.
B. Mandrel dose not fit completely into Nosepiece or fails to eject
CAUSE: A. Jaw Housing distance incorrect.
B. Jaws are dirty or damaged.
C. Fatigued Jaw Pusher Spring.
D. Fatigued Return Spring.
E.Air leakage in vacuum system.
REMEDY : A. Loosen the Head and check the rated stroke length. If shorter, search for worn or
damaged O- Rings and replace it.
B. Clean or replace the Jaws.
C. Replace the Jaw Pusher Spring.
D. Replace the Return Spring.
E. Search for worn or damaged seals in the vacuum system and replace it.
C. Tool take more than one stroke under ideal conditions to set rivet and break mandrel
CAUSE : A. Insufficient hydraulic fluid.
B. Low air pressure.
C. Loose Nosepiece or improper size of Nosepiece.
D. Rivet Body too long for the thickness of the joint.
REMEDY : A. See Remedy under MALFUNCTION & REPAIR A.
B. Increase air pressure but do not exceed 7 bar ( 100 PSI ) at tool.
C. Tighten Nosepiece or use right size of Nosepiece.
D. The Rivet Body should be 3-6 mm longer than the thickness of the joint.
SAFETY RULES
*Use only dry filtered air regulated to 6.3bar(90 PSI) on the tool inlet. Do not exceed maximum
7bar(100PSI).
* Disconnect the tool from the air supply before any assembly or disassembly
*Do not face the end of the Rear Gland (8) while operating the tool.
*Inspect the Hydraulic Section prior to use. Do not use if cracked. Contact the distributor for repair or
replacement.
*Do not pound on the Nosepiece or the end of the Head or force the rivet into the hole of the Nosepiece
as this will damage the tool.
*Use only genuine replacement parts and proper hydraulic fluid for the maintenance of tools.
*Make sure all parts are correctly and securely fastened.
ST-6674-I-1601B-FP

ST-6674 1/4" AIR HYDRAULIC RIVETE
R
PARTS LIST
No. Parts No. Descri
p
tion Q't
y
No. Parts No. Descri
p
tion Q't
y
6674-01 1/4" Nose
p
iece 1 32 6674-32 Dam
p
in
g
Rin
g
1
6674-01A 1/8" Nose
p
iece 1 33 6674-33 O-Rin
g
Seal 1
6674-01B 5/32" Nose
p
iece 1 34 6674-34 C
y
linder Ca
p
1
6674-01C 3/16" Nose
p
iece 1 35 6674-35 Retain Rin
g
1
2 6674-02 Head 1 36 6674-36 Plu
g
Screw 1
3 6674-03 Jaw Housin
g
1 37 6674-37 S
p
rin
g
1
4 6674-04 Jaws 3 38 6674-38 Valve Plate 1
5 6674-05 Jaw Pushe
r
1 39 6674-39 Valve Tube S
p
rin
g
1
6 6674-06 S
p
rin
g
1 40 6674-40 Valve Rod 1
7 6674-07 O-Rin
g
Seal 1 41 6674-41 Rubber Plate 1
8 6674-08 Jaw Housin
g
Cou
p
ler 1 42 6674-42 Pin 1
9 6674-09 Nut 1 43 6674-43 Pin 1
10 6674-10 X-Rin
g
Seal 2 45 6674-45 Saft
y
Ca
p
1
11 6674-11 Rin
g
Washe
r
2 46 6674-46 S
p
rin
g
1
12 6674-12 H
y
draulic Section 1 49 6674-49 Lock Nut 1
13 6674-13 Oil Plu
g
1 50 6674-50 Wrench 1
14 6674-14 H
y
draulic Plun
g
e
r
1 51 6674-51 Tri
gg
er 1
15 6674-15 O-Rin
g
Seal 2 52 6674-52 Tri
gg
er Rod 1
16 6674-16 O-Rin
g
Washer 1 53 6674-53 Tri
gg
er Lever 1
17 6674-17 Return S
p
rin
g
1 54 6674-54 Rin
g
Washe
r
2
18 6674-18 Return S
p
rin
g
1 55 6674-55 X-Rin
g
Seal 2
20 6674-20 Handin
g
Rin
g
1 56 6674-56 Pin 1
21 6674-21 Screw Plu
g
1 57 6674-57 Fill Washe
r
1
22 6674-22
A
ir Piston Rin
g
1 58 6674-58 O-Rin
g
Seal 1
23 6674-23 O-Rin
g
Seal 1 59 6674-59
A
ir Piston Rin
g
1
24 6674-24 O-Rin
g
Seal 1 60 6674-60 O-Rin
g
Seal 1
25 6674-25 S
p
rin
g
Washe
r
1 61 6674-61 Hand Gri
p
1
26 6674-26 Screw 1 62 6674-62 Rubber Cushion 1
27 6674-27 Plun
g
er Rod 1 63 6674-63 Universal Joint Kit 1
28 6674-28 O-Rin
g
Seal 1 64 6674-64 S
p
anner
(
17/19mm
)
1
29 6674-29 O-Rin
g
Seal 1 65 6674-65 Wrench 1
30 6674-30 Screw Plu
g
1 66 6674-66 Hex. Wrench 1
31 6674-31
A
ir C
y
linder Bod
y
1 67 6674-67 Oil S
y
rin
g
e1
ST-6674-P-1201C-FP
1

RIVETER
Original instructions
SUMAKE Industrial Co. Ltd.

1
Read all these safety instructions before operating this product and save these instructions.
The tool has been manufactured in conformity with the instruction of EU machine directive. The EU mark will be considered void in the event
of inexpert repairs, the use of non-original parts and in case of non-observance of the safety instructions in the user’s manual.
Possible direct or indirect consequential damages are not the responsibility of SUMAKE Industrial co., Ltd.
General safety rules:
1. Watch the tool at all times when in use.
2. People under the influence of alcohol or drugs are not allowed to use, repair or maintain the tool.
3. Keep unqualified persons, children, etc. away from the tool.
4. Keep work area clean and with sufficient daylight or artificial lighting. The work area on which the machine is used must be cleaned up.
Disorder is a potential cause of accidents.
5. Danger of explosion. Never use oxygen and combustible gas as an air supply for the tool which many be ignited by spark and cause fire
or explosion.
6. Never use gasoline or other flammable liquids to clean the tool.
7. Do not use air tools in potentially explosive atmospheres such as in the presence of flammable liquids, cleaning solvents, fluid energy or
stored gases.
8. Do not expose air tools to rain. Do not use air tools in damp or wet locations.
9. When a fault or failure is detected, the tool must immediately be disconnected from the air supply and returned for repair.
10. It is not permitted to modify the tool in any way.
11. When not in use, keep tools in a dry place, either locked up or in a high place, out of the reach of children.
12. Do not force small air tools to do the job of a heavy –duty task. Do not use air tool for purpose of which was not intended.
13. Wear suitable ear protection at environment noise level >80dB(A) and safety spectacles when using the tool. Always wear approved
safety goggles if work in dusty. This also applies to other persons in the nearby vicinity.
14. Do not wear loose clothing or jewelry. They can be caught in moving parts. Rubber gloves and non-skid foot wear are recommended
when working outdoors. Wear protective hair covering to contain long hair.
15. Keep proper footing and balance at all times.
16. Use clamps or a vice to hold work-piece. It is safer than using your hand and free both hands to operate the air tool.
17. When not use, before performing service or changing accessories, please disconnect tool from air compressor.
18. Do not carry plugged in air tool with your finger on the switch trigger. Be sure switch is in the “OFF” position when connecting to air
supply.
19. Watch what you are doing. Use common sense, even unsafe situation or unbalanced positions, particularly when you are tired.
20. Air powered tools can vibrate in use. Vibration, repetitive motions or uncomfortable positions may be harmful to your hands or arms.
Stop using any tool if discomfort, tingling feeling or pain occurs. Seek medical advice before resuming use.
21. Multiple hazards. Read and understand the safety instructions before installing, operating, repairing, maintaining, changing accessories
on, or working near the power tool. Failure to do so can result in serious bodily injury.
22. Only qualified and trained operators should install, adjust or use the power tool.
23. Do not modify this power tool. Modifications may reduce the effectiveness of safety measures and increase the risks to the operator.
24. Do not discard the safety instructions –give them to the operator.
25. Do not use the power tool if it has been damaged.
26. Tools shall be inspected periodically to verify the ratings and markings required by this document are legibly marked on the tool. The
employer/user shall contact the manufacturer to obtain replacement marking labels when necessary.
Safety precautions for projectile hazards
1. Disconnect the power tool from the energy source when changing inserted tool or accessories.
2. Failure of the work piece, or accessories, or even of the inserted tool itself may generate high velocity projectiles.
3. Always wear impact-resistant eye protection during operation of the tool. The grade of protection required should be assessed for each
use.
4. The risks to others should also be assessed at this time.
5. Ensure that the work piece is securely fixed.
6. Check that the protection against ejection of fastener and/or stem is in place and is operative.
7. Warn against the possible forcible ejection of installation mandrels from the front of the power tool.
Safety precautions for operating hazards
1. Use of the tool may expose the operator’s hands to hazards including crushing, impacts, cuts and abrasions and heat. Wear suitable
gloves to protect hands.
2. Operators and maintenance personnel must be physically able to handle the bulk, weight and power of the tool.
3. Hold the tool correctly: be ready to counteract normal or sudden movements –have both hands available.
4. Maintain a balanced body position and secure footing.
5. Release the start and stop device in the case of an interruption of the energy supply.
6. Use only lubricants recommended by the manufacturer.
7. That unsuitable postures may not allow counteracting of normal or unexpected movement of the tool.
8. If the power tool is fixed to suspension device make sure that the fixation is secure.
9. Risk of crushing if nose equipment is not fitted.

2
Safety precautions for repetitive motions hazards
1. When using a power tool, the operator may experience discomfort in the hands, arms, shoulders, neck, or other parts of the body.
2. While using a power tool, the operator should adopt a comfortable posture. Maintain secure footing and avoid awkward or off-balanced
postures. The operator should change the posture during extended tasks which may help avoid discomfort and fatigue.
3. If the operator experience symptoms such as persistent or recurring discomfort, pain, throbbing, aching, tingling, numbness, burning
sensation or stiffness, these warning signs should not be ignored. The operator should tell the employer and consult a qualified health
professional.
Safety precautions for accessory hazards
1. Disconnect power tool from energy supply before changing the inserted tool or accessory.
2. Only use sizes and types of accessories and consumables that are recommended by the power tool manufacturer.
Safety precautions for workplace hazards
1. Slips, trips and falls are major causes of workplace injury. Be aware of slippery surfaces caused by use of the tool and also of trip hazards
caused by the air line or hydraulic hose.
2. Proceed with care in unfamiliar surroundings. Hidden hazards may exist, such as electricity or other utility lines.
3. This power tool is not intended for use in potentially explosive atmospheres and is not insulated from coming into contact with electric
power.
4. Make sure there are no electrical cables, gas pipes etc. that could cause a hazard if damaged by use of the tool.
Safety precautions for dust and fume hazards
1. Dusts and fumes generated when using power tools can cause ill health (for example: cancer, birth defects, asthma and/or dermatitis);
risk assessment of these hazards and implementation of appropriate controls of is essential.
2. Risk assessment should include dust created by the use of the tool and the potential for disturbing existing dust.
3. Operate and maintain the power tool as recommended in these instructions, to minimise dust or fume emissions.
4. Direct the exhaust so as to minimise disturbance of dust in a dust filled environment
5. Where dusts or fumes are created, the priority shall be to control them at the point of emission.
6. All integral features or accessories for the collection, extraction or suppression of airborne dust or fumes should be correctly used and
maintained in accordance with the manufacturer’s instructions.
7. Use respiratory protection as instructed by your employer or as required by occupational health and safety regulations.
Safety precautions for noise hazards
1. Unprotected exposure to high noise levels can cause permanent, disabling, hearing loss and other problems such as tinnitus (ringing,
buzzing, whistling or humming in the ears).
2. Risk assessment of these hazards and implementation of appropriate controls of is essential.
3. Appropriate controls to reduce the risk may include actions such as damping materials to prevent work pieces from ‘ringing’.
4. Use hearing protection as instructed by your employer or as required by occupational health and safety regulations.
5. Operate and maintain the power tool as recommended in these instructions, to prevent an unnecessary increase in noise.
6. If the tool has a silencer, always ensure it is in place and in good working order when the tool is operating.
7. Select, maintain and replace the consumable/inserted tool as recommended in these instructions, to prevent an unnecessary increase in
noise.
Safety precautions for vibration hazards
1. Exposure to vibration can cause disabling damage to the nerves and blood supply of the hands and arms.
2. Wear warm clothing when working in cold conditions and keep your hands warm and dry.
3. If you experience numbness, tingling, pain or whitening of the skin in your fingers or hands, stop using the assembly power tool for
non-threaded mechanical fasteners, tell your employer and consult a physician.
4. Support the weight of the tool in a stand, tensioner or balancer, because the operator can then use a lighter grip to support the tool.
Additional safety instructions for pneumatic power tools
1. 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.
2. Never direct air at yourself or anyone else.
3. Whipping hoses can cause severe injury. Always check for damaged or loose hoses and fittings.
4. Cold air shall be directed away from the hands.
5. Whenever universal twist couplings (claw couplings) are used, lock pins shall be installed and whipcheck safety cables shall be used to
safeguard against possible hose-to-tool and hose-and-hose connection failure.
6. Do not exceed the maximum air pressure stated on the tool.
7. Never carry an air tool by the hose.
Specific safety instructions
Warnings shall be given about any specific or unusual hazards associated with the use of the power tool. Such warnings shall indicate the
nature of the hazard, the risk of injury and the avoidance action to take.

3
General preparation and connection:
1. Before connecting the air hose, apply 4 to 5 drops of SAE 10W-20 (ISO Viscosity Grade 46/32) Hydraulic Oil at the air inlet. Also, every
3 to 4 hours of operation, oiling is necessary. Twist Teflon thread tape to ensure a proper seal air inlet. Then tighten the air coupler into
air tool.
2. The supplied compressed air must be clean and dry, with the appropriate oil mist. Use an air treatment unit; filter, regulator and
lubricator.
3. Please refer Fig.1 illustration shows the correct mode of connection to the air supply system which will increase the efficiency and useful
life of the tool.
4. The quick connect coupling and hose must have sufficient air flow capacity. We recommend an air hose with a diameter of 10mm (3/8”).
5. To ensure a good performance. The operation pressure at the compressed air inlet should not exceed 6.3bar (90psi) (unless indicated
otherwise). Higher operating pressures may cause damaged or excessive wear. Operating pressures below 5.3bar may cause pressure
or power loss.
Risk of injury
1. Compressed air can inflict serious injuries. Therefore never point the air hose at another person or yourself.
2. Shut –off the air supply and disconnect the tool in case:
➢You want to change or replace accessories.
➢You want to clean, repair or maintain the tool.
➢The tool is not going to use for some times.
3. Check compressed air hose before use. If it is damaged, broken, torn, or deformed, the hose is not to be connected to the tool.
4. Always check the pneumatic couplings before using the tool. If they show signs of damage, fracture, cracking or excessive corrosion,
the respective tool or the air hose is not to be used.
5. Use only qualified adapters and connectors, In case of wear they are to be replaced immediately.
6. Only use air pipes that are fit for the use at maximum pressure.
Maintenance instruction:
1. Dry the filter (fig1) and the air inlet of the tool.
2. Lubricate the quick connect coupling to prevent blocking.
3. Air tool require lubrication throughout the life of the tool. The air motor and bearing uses compressed air to start the tool. The moisture in
compressed air will rust the air motor; you must lubricate the motor daily.
4. Avoid storing the tool in a location subject to high humidity. If the tool is left as it is used, the residual moisture inside the tool can cause
rust.
5. Before storage, lubricate tool and run it for a few seconds.
6. Regular inspection of spindles, threads, and clamping devices in respect of wear and tolerances for location of abrasive products.
7. If the tool is too seriously damage to be used anymore, recycle raw material instead of disposing as waste. The machine, accessories
and packaging should be sorted for environmental-friendly recycling. Check with your local authority or retailer for recycling advice.
8. Keep Safety Cap free of spent mandrels.
9. Insure that jaws are clean and free of metal shavings, dirt and oil.
10. Keep oil at optimum level. With use of tool there may be a gradual loss of oil. When you notice a reduction in the stroke, you need to
add a small amount of oil.
RIVETER-I-201212A