Clarke CAT 131, 3120145 User guide

AIR IMPACT WRENCH

MODEL NO: CAT131 & 132

PART NO: 3120145 / 3120146

OPERATING & MAINTENANCE

INSTRUCTIONS

ORIGINAL INSTRUCTIONS GC02 /22 - Rev 4

INTRODUCTION

Thank you for purchasing this CLARKE Impact Wrench. The CAT131 and CAT132
are identical wrenches, the CAT132 being supplied in a moulded plastic

storage case which contains the following.

• 1 x Mini Oiler • 1 x Extension Bar

• 1 x Hex Key • 1 x Snap Connector fitting

• 1 x Oil Bottle • 10 Impact Sockets, (9, 10, 11, 13,
14, 17, 19, 22, 24 & 27mm sizes)

Please read all of the safety and operating instructions carefully before using
this product. In doing so you will ensure the safety of yourself and that of others
around you, and you can look forward to your purchase giving you long and
satisfactory service

OVERVIEW

NO DESCRIPTION NO DESCRIPTION

1 Square Drive Shaft 3 Direction/Speed Control

2 Trigger 4 Air Inlet

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SPECIFICATION

Model Number CAT131/CAT132

Part Number(s) 3120145 / 3120146

Min. Hose Size (ID) 3/8” BSP

Max Operating Pressure 90 psi (6.2 bar)

Air Consumption 18 cfm (max @90psi) average 6.5 cfm

Max No Load Speed 7000 rpm @ 90psi

Max Torque 680 Nm (500 ft/lb)

Air Inlet Size 1/4“BSP

Sound Pressure Level (LpA dB) 87 dB(A)

Sound Power Level (LwA dB) 98 dB(A)

Vibration Levels

Weight(s) 2.6 kg (CAT131)

Wrench Dimensions (L x W x H) 210 x 190 x 90 mm

Please note that the details and specifications contained herein are correct
at the time of going to print. However Clarke International reserve the right to
change specifications at any time without prior notice.

4.35 m/s

4.2 kg complete (CAT132)

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(uncertainty factor K= 1.5m/s

2)

GUARANTEE

This product is guaranteed against faulty manufacture for a period of 12
months from the date of purchase. Please keep your receipt which will be
required as proof of purchase. This guarantee is invalid if the product is found
to have been abused or tampered with in any way, or not used for the
purpose for which it was intended.

Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission. This guarantee does not effect your
statutory rights.

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GENERAL SAFETY RULES

CAUTION: FAILURE TO FOLLOW THESE PRECAUTIONS COULD RESULT IN
PERSONAL INJURY, AND/OR DAMAGE TO PROPERTY.

WORK ENVIRONMENT

1. Keep the work area clean and tidy.

2. Dress appropriately - Do not wear loose clothing or jewellery. Tie long hair
out of the way.

3. Keep children and visitors away - Do not let children handle the tool.

4. Do not operate the tool where there are flammable liquids or gases.

USE OF POWER TOOLS

1. Stay alert and use common sense - do not operate the tool when you are
tired or under the influence of alcohol, drugs or medication.

2. Always wear eye protectors when using the tool. Eye protectors must
provide protection from flying particles from the front and the side. Ear
protectors should also be worn.

3. Do not overreach - Keep proper footing and balance at all times.

4. Never use oxygen, CO
source of power for this tool.

5. Do not connect the air supply hose with your finger on the trigger.

6. Do not exceed the maximum pressure for the tool of 90 psi / 6.2 bar.

7. Keep the air supply hose away from heat, oil and sharp edges.

8. Do not fit the tool to any stand or clamping device that may damage it.

9. Check hoses for leaks or worn condition before use, and ensure that all
connections are secure.

10. Do not use the tool for any purpose than that described in this manual.

11. Do not carry out any alterations or modifications to the tool.

12. Always disconnect from the air supply when:

• Performing any maintenance.

• The tool is not in use.

• The tool will be left unattended.

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, combustible gases or any type of bottled gas as a

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• Moving to another work area.

• Passing the tool to another person.

13. Never use the tool if it is defective or operating abnormally.

14. This tool should be serviced at regular intervals by qualified personnel.

15. Avoid damaging the tool for example by applying excessive force of any
kind.

16. Always maintain the tool with care. Keep it clean for the best and safest
performance.

17. Quick change couplings should not be located at the tool. They add
weight and could fail due to vibration.

18. Do not force or misuse the tool. It will do a better and safer job at the rate
for which it was designed.

19. Do not remove any labels. Damaged labels should be replaced.

20. This tool vibrates with use. Vibration may be harmful to your hands or arms.
Stop using the tool if discomfort, a tingling feeling or pain occurs. Seek
medical advice before resuming use.

IMPACT WRENCH SAFETY INSTRUCTIONS

1. Always use the impact wrench in the manner and for the functions
described in these instructions.

2. Always ensure the wrench is not moving and disconnected from the air

supply when changing sockets etc. Use only Impact Wrench sockets....DO

NOT use standard sockets.

3. Always finish tightening wheel nuts or engine parts with a torque wrench or
suitable spanner to the correct torque as recommended by the vehicle
manufacturer.

4. Always avoid excessive use of the impact wrench. When tightening a nut
or bolt, never allow the wrench to impact more than 8 times - to avoid over
tightening - 3 to 4 impacts is normally sufficient.

5. Always ensure that the socket is correctly installed before switching on.

6. Always only use sockets which are specified for impact wrench use.

7. Due to the possible presence of asbestos dust from brake linings, always
wear suitable respiratory protection.

8. Never carry the impact wrench by the air supply hose.

9. Always disconnect from the air supply when changing impact sockets or
when the wrench is not required for immediate use in order to avoid
accidental starting.

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10. Always store this product in a dry, secure place out of reach of children or
untrained users.

11. Always use both hands to control the impact wrench.

12. Always ensure the wrench has stopped before putting it down after use.

13. Never carry the tool by the air hose.

14. Never carry the tool with your finger on the trigger.

SAFETY SYMBOLS

The following safety symbols are to be found on the tool.

Read this instruction
booklet carefully
before use.

Wear eye protection.

Wear ear protection.

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COMPRESSED AIR REQUIREMENTS

WARNING: COMPRESSED AIR CAN BE DANGEROUS. ENSURE THAT YOU
ARE FAMILIAR WITH ALL PRECAUTIONS RELATING TO THE USE OF
COMPRESSORS AND COMPRESSED AIR SUPPLY.

A typical air line layout is shown below.

• Use only clean, dry, regulated compressed air as a power source.

• Air compressors used with the tool must comply with the appropriate

European Community Safety Directives.

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• A build-up of moisture or oil in the air compressor will accelerate

wear and corrosion in the tool. Ensure any moisture is drained from
the compressor daily and the inlet filter is kept clean.

• If an unusually long air hose is required, (over 8 metres), the line

pressure or the hose inside diameter may need to be increased.

• The air hose must be rated at least 150% of the maximum operating

pressure of the tool.

• If an automatic in-line filter/regulator is used, it will keep the tool in

good condition, but should be regularly checked and topped up
with oil. clarke airline oil should be used, and the lubricator adjusted
to approx 2 drops per minute.

• For optimum performance it is recommended that a 3/8” ID hose is

used.

• Never exceed the maximum operating pressure for the tool. It is

recommended that air pressure to this tool does not exceed 90 psi
at the tool when running. Higher pressures and dirty air will shorten
the life of the tool due to faster wear and is a possible safety hazard.

CONNECTING THE AIRLINE

NOTE: Ensure the compressor is turned off.

1. If required, connect an in-line mini
oiler to the tool.

• A mini oiler helps to prolong the

life of the impact wrench.

2. If a mini-oiler is not being used, run
a few drops of oil through the tool
before use. It can be entered
through the air inlet connector or
via the hose at the nearest
connection to the air supply.

3. Connect a suitable hose as shown.

4. Connect the other end of the hose
to the compressor.

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5. Turn on the air supply and check for air leaks. Rectify any found before
proceeding.

• PTFE tape may be useful for sealing threaded connections.

Your air tool is now ready for use.

You can fit a whip hose with a quick fit coupling if required, available from
your Clarke dealer.

**Clarke Air Line Oil (part no. 3050825) is available from your Clarke dealer.

OPERATION

FITTING THE IMPACT SOCKET

WARNING: NEVER USE STANDARD SOCKETS. THESE MAY SHATTER WITH
SERIOUS CONSEQUENCES. ONLY USE IMPACT SOCKETS DESIGNED FOR
USE WITH IMPACT TOOLS.

1. Select the impact socket you
require, which must be in good
condition and fit the tool exactly.

2. Push the socket onto the square
drive as shown.

OPERATING THE IMPACT WRENCH

1. Locate the socket over the nut to
be tightened or loosened.

2. Squeeze the trigger to start the
wrench.

3. Release the trigger switch to stop
the wrench.

• The square drive shaft will

continue to rotate very briefly
after the trigger has been
released.

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ADJUSTING THE POWER

1. To adjust the power, set the air
regulator to one of the 3 settings
available. (Setting 1-Low, 3 -High)

• These numbers are only for

reference and do not denote a
specific amount of power.

SELECTING FORWARD AND REVERSE

WARNING: WAIT UNTIL THE ANVIL HAS STOPPED ROTATING BEFORE
OPERATING THE FORWARD/REVERSE BUTTON.

Forward/Reverse rotation is selected
by pushing the combined Forward/
Reverse knob/power regulator in the
direction shown by the arrow on the
back of the wrench.

1. For normal tightening, the wrench
should be operated in the forward
(F) direction.

• For loosening, the wrench

should be operated in the
reverse (R) direction.

DISCONNECTING THE AIR SUPPLY

1. Do not disconnect the air supply hose until the compressor has been shut
down and the compressed air released. Residual pressure can be expelled
from the tool by running it until it stops.

2. Refer to the compressor instruction manual for the procedure to shut down
and vent the compressed air.

3. Once the pressure has been released, disconnect the air supply hose from
the air tool.

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MAINTENANCE

WARNING: MAKE SURE THAT THE AIR TOOL IS DISCONNECTED FROM THE
AIR SUPPLY BEFORE STARTING ANY CLEANING OR MAINTENANCE
PROCEDURES.

DAILY/SUBJECT TO USAGE

1. Before use, drain water from the airline filter and compressor.

2. Pour a few drops of Clarke air-line
oil, into the tool air inlet. This
should be carried out regardless
of whether or not an in-line mini
oiler is used. If an in-line mini oiler is
not used, this procedure should
be repeated after every two to
three hours of use.

• Check the air inlet filter for

blockage and clean if needed.

Lubricate the motor by first removing
the screw shown with a hex key.

• A hex key is provided for

removing the end cover from
the wrench.

Using a grease gun, insert the gun
nozzle into the grease port. Several
drops of grease are recommended
for lubrication.

• This will protect the motor in

good rotating condition.

INTERNAL CLEANING

1. Grit or gum deposits in the tool
may reduce efficiency and cause

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the tool to run erratically. This condition can be corrected by cleaning the
air strainer and flushing out the tool with gum solvent or oil.

2. Failing this, the tool should be disassembled, thoroughly cleaned, dried
and reassembled.

3. The tool may be dismantled by removing the front cover using the hex key
supplied prior to replacing any worn or damaged parts.

4. You may prefer to take the tool to your Clarke dealer if internal
maintenance is required.

5. While in a dismantled state, always grease the hammer mechanism
applying a small amount of good quality bearing grease.

TROUBLESHOOTING

SYMPTOM PROBLEM SOLUTION

Tool runs at normal speed
but slows down under any
load.

Tool runs slowly. Air flows
weakly from exhaust.

Tool will not run. Air flows
freely from exhaust.

Tool will not shut off. 1. Throttle O-rings dam-

1. Motor parts worn.

2. Worn or sticking
mechanism due to
lack of lubricant.

1. Motor parts jammed
with gum/dirt.

2. Air-line regulator in
closed position.

3. General airflow
blocked by dirt.

1. Motor vanes stuck
due to buildup of
foreign material.

aged or ill-fitting in seat.

1. Return to Clarke dealer
for repair.

2. Drip air tool lubricating
oil into air inlet. Allow oil to
soak moving parts before
using.

1. Examine inlet air filter for
blockage. Drip a few
drops of air tool lubricat­ ing oil into air inlet.

2. Adjust in-line regulator to
open position.

3. Operate tool in short bursts.

1. Disconnect air supply and
rotate tool assembly manu­ally.

2. Try operating tool in
short bursts.

3. Tap motor housing gently
with a rubber mallet.

4. Drip a few drops of air
tool lubricating oil into air
inlet to soak moving parts.

1. Return to Clarke dealer
for repair.

PERFORMANCE

Please note that factors other than the tool may effect its operation and
efficiency such as reduced compressor output, excessive drain on the airline,

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moisture or restrictions in the air-line, or the use of connectors of improper size
or poor condition which will reduce air supply.

STORAGE

If the tool is to be stored, or is idle for longer than 24 hours, run a few drops of
Clarke air line oil into the air inlet, and run the tool for 5 seconds in order to
lubricate the internal parts. When not in use, disconnect from air supply, clean
& store in a safe, dry place.

PARTS LIST

No Description No Description

1 Main Housing 23 Circlip

2 Trigger Sleeve 24 Rear Rotor Bearing

3Trigger 25Rear Plate

4 Trigger Shaft 26 Cylinder

5 Screw 27 Rotor

6 Forward/Reverse Valve Knob 28 Rotor Blade

7 Valve Bushing 29 Front Plate

8 O-Ring 30 Bearing

9 Valve 31 Washer

10 Spring 32 Washer

11 Steel Ball 33 Hammer

12 Forward/Reverse Valve Knob 34 Hammer Cage

13 Valve Seat 35 Hammer Pin

14 Throttle Valve 36 Square Drive Shaft

15 Valve Spring 37 Bush

16 Exhaust Deflector 38 Gasket

17 Washer 39 Hammer Casing

18 Air Inlet 40 Spacer

19 Screw 41 Cap Screw

20 O-Ring 42 Thread Bushing

21 Dowel Pin 43 Soft Grip

22 Gasket

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PARTS DIAGRAM

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DECLARATION OF CONFORMITY

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