HUSKY HSTC4140 Impact Wrench Instruction Manual
- June 13, 2024
- Husky
Table of Contents
HUSKY HSTC4140 Impact Wrench
Specifications
Drive size……………………………………………………………………….1/2″
Free speed (no load) ……………………………………………. 7,500 RPM
Impacts per min. ……………………………………………………… 800 IPM
Maximum torque……………………………………………………. 550 ft.lbs.
Weight …………………………………………………………………… 4.85 lbs.
Overall length……………………………………………………………… 7-1/2″
Average air consumption ………………………………………….. 4.5 CFM
Recommended hose size ………………………………………….. 3/8″ I.D.
Air inlet……………………………………………………………………1/4 NPT
Maximum Air Pressure ……………………………………………….. 90 PSI
Description
The Husky model no. HSTC4140 1/2″ Impact Wrench is designed for demanding fastening and maintenance applications. This tool features a built-in regulator for convenient power output adjustment, steel anvil housing to protect internal components, through handle exhaust and a ring type retainer for quick socket changes.
General Safety Information
Read Operating Instructions
Always become familiar with all the instructions and warnings before operating
any pneumatic tool.
Always Wear Approved Eye Protection
Impact
resistant eye protection should meet or exceed the standards as set forth in
the United States ANSI Z87.1, Occupational and Educational Eye and Face
Protection.
Look for the marking Z87.1 on your eye protection to insure that it is an
approved style. For further information, ANSI Z87.1, Occupational and
Educational Eye and Face Protection, is available from the American National
Standards Institute, Inc., 11 West 42nd Street, New York, NY 10036.
Hearing Protection is Recommended
Hearing protection should be used when the noise level exposure equals or
exceeds an 8 hour time-weighted average sound level of 85dBA. Process noise,
reflective surfaces, other tools being operated nearby, all add to the noise
level present in your work area. If you are unable to determine your noise
level exposure, we recommend the use of hearing protection.
Avoid Prolonged Exposure to Vibration
Pneumatic tools can vibrate during use. Prolonged exposure to vibration or
very repetitive hand and arm movements, can cause injury. Stop using any tool
if discomfort, tingling feeling or pain occurs. You should consult your
physician before resuming use of the tool.
90 PSIG Maximum
Husky impact wrenches are designed to operate at an air pressure of 90 pounds
per square inch gauge pressure (90 PSIG) maximum, at the tool. Use of higher
air pressure can, and may cause injury. Also use of higher air pressure places
the internal components under loads and stresses they were not designed for,
causing premature tool failure. The air supply should be clean and dry,
preferably lubricated. For best results drain the moisture from your
compressor daily.
Use Only Impact Sockets and Accessories
Only use sockets designated “For Use With Impact Wrenches.” Hand tool sockets
can break creating a hazard from flying pieces. Always check sockets,
retainers and drives regularly for wear or damage and replace when necessary.
Operation & Parts Manual
1/2″ Impact Wrench
IMPORTANT SAFETY INSTRUCTIONS
INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO
PERSONS
WARNING – Some dust created by using power tools contains chemicals known
to the State of California to cause cancer and birth defects or other
reproductive harm WARNING-When using the product, basic precautions should
always be followed, including the following:
General: To reduce the risks of electric shock, fire, and injury to
persons, read all the instructions before using the tool.
Work area
- Keep the work area clean and well lighted. Cluttered benches and dark areas increase the risks of electric shock, fire and injury to persons.
- Do not operate the tool in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. The tool is able to create sparks resulting in the ignition of the dust or fumes.
- Keep bystanders, children, and visitors away while operating the product. Distractions are able to result in the loss of control of the tool.
Personal safety
- Stay alert. Watch what you are doing and use common sense when operating the product. Do not use the product while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating the tool increases the risk of injury to persons.
- Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair increases the risk of injury to persons as a result of being caught in moving parts.
- Remove adjusting keys and wrenches before turning the tool on. A wrench or a key that is left attached to a rotating part of the tool increase the risk of personal injury.
- Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the tool in unexpected situations.
- Use safety equipment. A dust mask, non-skid safety shoes and a hard hat must be used for the applicable conditions.
- Always wear eye protection.
- Always wear hearing protection when using the tool. Prolonged exposure to high intensity noise is able to cause hearing loss.
- Disconnect the product from the air source before making any adjustments.
- Avoid unintentional starting. Be sure the switch is off before connecting to the air supply. Do not carry the tool with your finger on the switch or connect the tool to the air supply with the switch on.
- Accessories must be rated for at least the speed of the tool marked on the tool label. Wheels and other accessories running over the rated speed can fly apart and result in a risk of injury to persons.
CAUTION
- Inspect hose connection before each use;
- Do not exceed 90psi when using pneumatic tools.
- Do not kink, twist, knot or abrade hose.
Applicable Range:
Is applicable for pneumatic tools and accessories.
Specifications:
Air tools Maximum Working Pressure………90psi.
Operation
Tool use and care
- Use clamps or another practical way to secure and support the workpiece to a stable platform. Holding the work by hand or against the body is unstable and to lead to loss of control.
- Do not force the tool. Use the correct tool for the application. The correct tool will do the job better and safer at the rate for which the tool is designed.
- Do not use the tool if the switch does not turn the tool on or off. Any tool that cannot be controlled with the switch is dangerous and must be repaired.
- Disconnect the tool from the air source before making any adjustments, changing accessories, or storing the tool. Such preventive safety measures reduce the risk of starting the tool unintentionally.
- Store the tool when it is idle out of children and other untrained persons. A tool is dangerous in the hands of untrained users.
- Maintain the tool with care. Keep a cutting tool sharp and clean. A property maintained too, with sharp cutting edges reduced the risk of binding and is easier to control.
- Check for misalignment or binding of moving parts, breakage of parts, and any other condition that affects the tool’s operation. If damaged, have the tool serviced before using. Many accidents are caused by poorly maintained tools. There is a risk of bursting if the tool is damaged.
- Use only accessories that are identified by the manufacturer for the specific tool model. Use of an accessory not intended for use with the specific tool model, increases the risk of injury to persons.
- Accessories must be rated for at least the speed of the tool marked on the tool label.
Wheels and other accessories running over rated speed can fly apart and result in a of injury to persons.
Service
- Tool service must be performed only by qualified repair personnel.
- When servicing a tool, use only identical replacement parts. Use only authorized parts.
- Use only the lubricants supplied with the tool of specified by the manufacturer.
Air source
- Never connect to an air source that is capable of exceeding 115psi. Over pressurizing the tool is able to result in busting, abnormal operation, and breakage of the tool or serious injury to persons. Use only clean, dry, regulated compressed air at the rated pressure or within the rated pressure range as marked on the tool. Always verify prior to using the tool that the air source has been adjusted to the rated air pressure or within the rated air-pressure range.
- Never use oxygen, carbon dioxide, combustible gases or any bottled gas as an air source for the tool. Such gases are capable of explosion and serious injury to persons.
Installation
Always use clean dry air. Excessive moisture and dirt will greatly reduce the
life of any air motor. We recommend the installation of an in-line filter-
regulator-lubricator as close to the tool as possible.
A 3/8″ air hose is required up to a length of 8 ft. If more length is required a 1/2″ air hose should be connected to the 3/8″ hose to ensure the tool has the necessary air supply. Be sure all hoses and fittings are the correct size and tightly secured.
Pre-Operation
Before the tool is connected to the air supply, clear the air hose of
accumulated dust and moisture. Before removing a tool for service or changing
sockets, make sure the air line is shut-off and drained of air. This will
prevent the tool from operating if the throttle is accidentally engaged.
Operation
This Husky 1/2″ impact is supplied with an internal power regulator. This tool
may be adjusted by rotating the regulator valve, until desired output is
achieved. Power is regulated in both the forward and reverse direction.
Once a bolt or fastener is seated, impacting for longer than five seconds will cause excessive wear and damage to the impacting mechanism. If it takes longer than five seconds to tighten your bolt or fastener, we recommend the use of a larger size impact wrench.
Lubrication of hammer unit
The oil reservoir in the anvil housing should be checked every 40 hours of
operation. Remove the oil plug from the housing and hold tool so the oil port
is lower than the anvil housing.
Drain oil. Measure and refill with approximately 1oz. (30ml) of SAE 30 weight
oil. Never over fill the anvil mechanism or excessive pressure will be created
reducing tool speed and power. If the tool becomes sluggish after adding oil,
remove a small amount of oil and check performance of tool again.
CAUTION
Only use sockets designed for impact tools. Using hand tool sockets can be hazardous and may result in personal injury. Always check accessories for wear, cracks and other defects before use.
Maintenance
Lubrication
An automatic in-line filter-regulator-lubricator is recommended as it
increases tool life and keeps the tool in sustained operation. The in-line
lubricator should be regularly checked and filied with air tool oil. Proper
adjustment of the in-line lubricator is performed by placing a sheet of paper
next to the exhaust ports and holding the throttle open approximately 30
seconds. The lubricator is properly set when a light stain of oil collects on
the paper. Excessive amounts of oil should be avoided.
In the event that it becomes necessary to store the tool for an extended
period of time (overnight, weekend, etc.), it should receive a generous amount
of lubrication at that time. The tool should be run for approximately 30
seconds to ensure oil has been evenly distributed throughout the tool. The
tool should be stored in a clean and dry environment.
Recommended lubricants : Use Husky air tool oil or any other high grade
turbine oil containing moisture absorbents, rust inhibitors, metal wetting
agents and an EP (extreme pressure) additive.
Exploded View and Parts List
For replacement parts or the nearest service center, call toll free 1-877-841-9438
Ref| Part No.| Description| Qty| Ref| Part No.|
Description| Qty
---|---|---|---|---|---|---|---
1| HSTC-4140W01| Housing| 1| 23| HSTC-4140W23| Oil Seal| 1
2| HSTC-4140W02| Oil Seal| 1| 24| HSTC-4140W24| Front End Plate| 1
3| HSTC-4140W03| Busing| 1| 25| HSTC-4140W25| Rotor Blade| 6
4| HSTC-4140W04| Spacer| 1| 26| HSTC-4140W26| Reverse Valve| 1
5| HSTC-4140W05| Anvil Collar| 1| 27| HSTC-4140W27| O-ring (AS014)| 1
6| HSTC-4140W06| O-Ring (P7)| 1| 28| HSTC-4140W28| Steel Ball (1/8″)| 1
7| HSTC-4140W07| Anvil| 1| 29| HSTC-4140W29| Spring| 1
8| HSTC-4140W08| Spring| 1| 30| HSTC-4140W30| Regulator Knob| 1
9| HSTC-4140W09| Hammer Pin| 2| 31| HSTC-4140W31| Screw (M4x8)| 1
10| HSTC-4140W10| Drive Cam| 1| 32| HSTC-4140W32| Trigger| 1
11| HSTC-4140W11| Drive Cam Base| 1| 33| HSTC-4140W33| O-ring (2×1)| 1
12| HSTC-4140W12| Steel Ball (8mm)| 1| 34| HSTC-4140W34| Valve Stem| 1
13| HSTC-4140W13| Hammer Cage| 1| 35| HSTC-4140W35| Pin (2.5×24)| 1
14| HSTC-4140W14| Pin| 1| 36| HSTC-4140W36| Pin (3×30)| 1
15| HSTC-4140W15| Cylinder| 1| 37| HSTC-4140W37| Washer| 1
16| HSTC-4140W16| Rotor| 1| 38| HSTC-4140W38| Washer| 1
17| HSTC-4140W17| Rear Plate| 1| 39| HSTC-4140W39| Valve Stem| 1
18| HSTC-4140W18| Ball Bearing (6001ZZ)| 1| 40| HSTC-4140W40| Spring| 1
19| HSTC-4140W19| Gasket| 1| 41| HSTC-4140W41| Exhaust Deflector| 1
20| HSTC-4140W20| Rear Cover| 1| 42| HSTC-4140W42| O-Ring (AS017)| 2
21| HSTC-4140W21| Spring Washer & Screw (5×20)| 4| 43| HSTC-4140W43| Air
Inlet| 1
22| HSTC-4140W22| Ball Bearing (EE4)| 1| | | |
Troubleshooting Chart
Low Power| Erratic Action| Blows Air Won’t Run| Tool
Noisy| Causes and Solutions
---|---|---|---|---
| | | | Check air pressure.
| | | | Check for water in lines.
| | | | Oil tool with air tool oil.
| | | | Check FWD/REV switch.
| | | | Check power regulator setting.
Lifetime Warranty
If this Husky product fails due to a defect in materials or workmanship,
return the product to any Home Depot retail store with a receipt indicating
proof of purchase for replacement with an item of equal or greater value. This
warranty excludes incidental/consequential damages and failures due to misuse,
abuse or normal wear and tear.
This warranty gives you specific rights, and you may also have other rights,
which vary, from state to state. Please see store or call 1-888-HD-HUSKY for
details.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>