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Product Type         

1/2” Air Angle Impact

Wrench

Model                    

YU-RA4002

Putting Into Service

Air Supply

Use a clean lubricated air supply that will give 

a measured air pressure at the tool of 90 

p.s.i./ 6.3bar when the tool is running with
the trigger fully depressed And the air 

regulator in its maximum opening flow 

position. Use recommended hose size and 

length. It is recommended that the tool is 

connected to the air supply as shown in 

figure1

All Pipe And Fitting

Should Be 1/2” Or Larger

Compressor

With Sufficient Capacity

To Maintain Recommended

Working Pressure At

Each Tool Outlet

Receiver Tank

40 Gallons Or More

Take Air From Top

Easy To Reach And

Operate Shut Off Valve

Air Regulator Set At

Recommended Working

Air Pressure

Drain Daily FilterLubricator

Air Tool

Low Spot To 

Trap Water

Drain Daily

Recommended Air Supply System

Figure   1

Work Stations

The tool should only be used as a handheld hand 

operated tool. It is always recommended that the tool is 

used when standing on the solid floor. It can be in other 

positions but before any such use, the operator must be in 

a secure position having a firm grip and footing and be 

aware that when loosening fasteners the tool can move 

quite quickly away from the fastener being undone. An 

allowance must always be made for this rearward 

movement so as to avoid the possibility of hand/arm/body 

entrapment. 

Foreseen Use Of Tool

The impact wrench is designed for the tightening and

loosening of threaded fasteners within the rang as

specified by manufacturer. It should only be used in

conjunction with suitable impact type

1/2"

(13mm)

square

female driver nut running sockets. Only use sockets

which are of the impact type.
It is allowed to use suitable extension bars, universal

joints and socket adaptors between the square output

driver of the impact wrench and the square female drive

of the socket. Do not use the tool for any other purpose

than that specified without consulting the manufacturer or

the manufacturer’ s authorized supplier. To do so may be

dangerous.
Never use an impact wrench as hammer to dislodge or

straighten cross threaded fasteners. Never attempt to

modify the tool for other uses and never modify the tool

for even its recommended use as a nut runner.

1.Do not connect a quick connect coupling directly to the

tool but use a whip or a leader hose of say approximately

12 inches

(300mm)

length. Do not connect the tool to the

airline system without incorporating an easy to reach and

operate air shut off valve.

The air supply should be lubricated. It is strongly

recommended that an air filter, regulator, lubricator (FRL)

is used as shown in Figure 1 as this will supply clean,

lubricated air at the correct pressure to the tool. Details of

such equipment can be obtained from your supplier. If

such equipment is nit used then the tool should be

lubricated by shutting off the air supply to the tool,

depressurizing the line by pressing the trigger on the tool.

Disconnect the air line and pour into the intake bushing a

teaspoonful (5mL) of a suitable pneumatic motor

lubricating oil preferably incorporating a rust inhibitor.

Reconnect tool to air supply and run tool slowly for a few

seconds to allow air to circulate the oil. If tool is used

frequently lubricate on daily basis and if tool starts to slow

or lose power. When lubricating, also ensure that screen

in intake bushing is clean.

It is recommended that the air pressure at the tool whilst

the tool is running at 90 psi./6.3 bar. The tool can run at

lower and higher pressure with the maximum permitted

working air pressure of 100 psi./ 7.0 bar. For a lower air

pressure the tool will give a lower output for a given

setting of the sir regulator set for

90 psi./6.3bar.

operation

and increased output for higher pressure. Hence it is

possible that changes in supply pressure can give

situation where the fastener is under over tightened. For

changes in pressure, the regulator position and

application should be reassessed. It is recommended that

joint tightness of the threaded fastener assembly be

checked with suitable measuring equipment.

Follow the national legislation of waste disposal.

“Original Instruction”

Operators Instructions

Includes-Foreseen Use, Work Stations, Putting Into Service, 

Operating, Dismantling, Assembly and Safety Rules 

Important   

Read these instruction carefully before installing, operating, 

servicing or repairing this tool. Keep these instructions in a 

safe accessible place. 

Summary of Contents for YU-RA4002

Page 1: ...r attempt to modify the tool for other uses and never modify the tool for even its recommended use as a nut runner 1 Do not connect a quick connect coupling directly to the tool but use a whip or a le...

Page 2: ...for joints of average tension requirement 3 to 5 seconds c The setting of air regulator for a given joint at a given pressure operated for a given time The air regulator can be used to the regulate th...

Page 3: ...loose clothing or jewelry They can be caught in moving parts Rubber gloves and non skid foot wear are recommended when working outdoors Wear protecti8ve hair covering to contain long hair 15 Keep prop...

Page 4: ...e inserted tool as recommended in the instruction handbook to prevent an unnecessary increase in noise Safety precautions for repetitive motions hazards 1 When using a power tool for the operator can...

Page 5: ...s for vibration hazards 1 Exposure to vibration can cause disabling damage to the nerves and blood supply of the hands and arms 2 Keep the hands away from the sockets 3 Wear warm clothing when working...

Page 6: ...aging should be sorted for environmental friendly recycling Check with your local authority or retailer for recycling advice Read the operator s instructions before operating the tool Wear eye protect...

Page 7: ...88J 0988P 2585T 09851T 09891T 09891J 12891T 1217T 19891T 19892T6 25891T 25892T6 25871T8 19891T6 25893T 25893T6 25893T8 12898T 12893T 503H1 503H2 RA4002 x2 1281T 1982T x3 1281T 1982T 1283T 1283T A 1284...

Page 8: ......

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