Universal Tool UT8612-B Specifications

Manufacturer/Supplier Product Type RPM
Cycles Per Min
Tel No Fax No(01494) 883300 (01494) 883237
Model No/Nos Serial No
Product Nett Weight
lbs
Kg
Recommended Use Of
Balancer Or Support
Recommended Hose Bore
Size - Minimum
Recommended Max.
Hose Length
Ins M/M Ft M
Foreseen Use of the Tool
The tool is designed for the purpose of chipping, riveting and
scaling of metals and stone. In general terms a reciprocating free
piston in the cylinder of the tool imparts a blow to the chisel or
working attachment. A list of suitable equipment to use with this
tool can be provided by the manufacturer. Do not use the tool for
any other purpose than that for which it was designed without
consulting the manufacturer or the manufacturer’s authorised
representative.
Do not modify the tool for it’s use as a chipper etc. or for any
other purpose without first agreeing any such modification with
the manufacturer or the manufacturer’s authorised representative.
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./6.3 bar when the tool is running
with the trigger fully depressed. Use recommended hose size
and length. It is recommended that the tool is connected to the
air supply as shown in figure 1. Do not connect the tool to the air
line 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 not used then
the tool should be lubricated by shutting off the air supply to the
tool, depressurising the line by pressing the trigger on the tool.
Disconnect the air line and pour into the intake bushing a
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
a solid floor. It can
be used 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 of a
reaction force on
the hand as result
of the tool doing
work.
No
Air Pressure
Recommended Working
6.3
bar
90
PSI
Recommended Minimum
n/a
bar
n/a
PSI
Maximum
7.0
bar
100
PSI
Personal Safety Equipment
Use - Safety Glasses
Yes
Use - Safety Gloves
Yes
Use - Safety Boots
Use - Breathing Masks
Use - Ear Protectors
Yes
Page No 1
0.401 Shank Air Hammer
UT8612-B Round Shank
UT8613-B Hex Shank
3.52
1.6 3/8 10 30 10
3,500
Includes - Foreseen Use, Work Stations, Putting Into Service,
Operating, Dismantling, Assembly and Safety Rules
Operator Instructions Important
Read these instructions carefully before installing, operating,
servicing or repairing this tool. Keep these instructions in a safe
accessible place.
Universal Air Tool Company Limited
Unit 8
Lane End Industrial Park
High Wycombe
Bucks
HP14 3BY
Vibration Level
Test Method Tested in accordance with ISO
standards 8662 Parts 1 & 2
13.0
Noise Level Sound Pressure Level 102.7 dB(A)
Test Method Tested in accordance with Pneurop
test code PN8NTC1 and ISO Standard 3744
Sound Power Level 115.0 dB(A)
Metres / Sec²

Dismantling & Assembly Instructions
Disconnect tool from air supply.
Grip the flats on cylinder (37) and unscrew safety chuck (40),
quick change chuck (41), spring retainer (42) or needle scaler
attachment (43) according to type fitted. Take out chisel or
adaptor.
Grip cylinder (37) in a vice with handle (21) uppermost and
unscrew handle (21) from cylinder (37). Take off valve assembly
from top of cylinder (37) noting dowel location and separate into
parts pins (32) and (33), valve disc (35), lower valve case (34)
and upper valve case (31). Remove cylinder (37) from vice and
tip out piston (36). Tap out 2 off pins (2) to remove trigger (13)
and screw out regulator (24) and 2 off o-rings (19). Unscrew
intake bushing (27) and remove spring (26), ball (16), push rod
(25) and ball seat (14).
Reassembly
Clean all parts and examine for wear. Replace any components
with parts supplied by the manufacturer or the manufacturer’s
authorised representative. Coat all parts with a pneumatic tool
lubricating oil, one preferably containing a rust inhibitor and
assemble in the reverse order. Fit chisel or attachment as
required.
the 'off' position when it is released.
12) Always shut off the air supply to the tool, and depress the
trigger/lever etc. to exhaust air from the feed hose before fitting,
adjusting or removing the working attachment.
13) Check hose and fittings regularly for wear. Replace if
necessary. Do not carry the tool by its hose and ensure the hand
is remote from the on/off control when carrying the tool with the
air supply connected.
14) Take care against entanglement of moving parts of the tool
with clothing, ties, hair, cleaning rags, etc. This will cause the
body to be drawn towards the tool and can be very dangerous.
15) It is expected that users will adopt safe working practices
and observe all relevant legal requirements when installing, using
or maintaining the tool.
16) Do not install the tool unless an easily accessible and easily
operable on/off valve is incorporated in the air supply.
17) Take care that the tool exhaust air does not cause a problem
or blows on another person.
18) Never lay a tool down unless the working attachment has
stopped moving.
19) Never point a tool at any person.
20) Use only suitable pneumatic tool lubricants. This is important
as a safeguard against the “diesel effect” i.e. explosive mixtures
firing.
21) Chisels worn/blunt at the cutting edge or shank should not
be used as such conditions promote tool breakage, reduce
efficiency and increase vibration. A chisel which breaks can
cause injury by creating unexpected movement.
22) When chipping or scaling in potentially explosive
atmospheres use spark resistant chisels usually made of
beryllium copper. Consult the manufacturer of the tool standard
chisels about sources of supply.
23) Do not store chisels etc. at freezing and below freezing
temperatures. Freezing temperatures can make hardened-tool
steels brittle which can cause breakage and lead to injury.
24) Do not start tool until steel/chisel/needles are in contact with
the working surface. Do not run tool unless retainer is fitted.
25) Always use tool with a whip hose as shown in fig 1.
26) Don’t over reach. Keep proper footing and balance at all times.
27) Do not force the tool but allow it to cut.
28) When possible secure work with clamps or vice so both
hands are free to operate the tool.
29) Use only 0.401” diameter shank size chisels or adaptors.
30) Be aware that prolonged exposure to vibration can cause
injury.
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.
It is recommended that the air pressure at the tool whilst the tool
is running is 90 p.s.i./6.3 bar. The tool can run at lower and
higher pressures with the maximum permitted working air
pressure of 100 p.s.i./7.0 bar.
Page No 2
Safety Rules For A Percussive Air
Hammer
1) Read all the instructions before using this tool. All operators
must be fully trained in its use and aware of these safety rules.
2) Do not exceed the maximum working air pressure.
3) Use personal safety equipment.
4) Use only compressed air at the recommended conditions.
5) If the tool appears to malfunction remove from use
immediately and arrange for service and repair.
6) If the tool is used with a balancer or other support device
ensure that it is fixed securely.
7) Always keep hands away from the working attachment fitted
to the tool.
8) The tool is not electrically insulated. Never use the tool if there
is any chance of it coming into contact with live electricity.
9) Always when using the tool adopt a firm footing and/or
position and grip the tool firmly to be able to counteract any
forces or reaction forces that may be generated whilst using the
tool.
10) Use only correct spare parts. Do not improvise or make
temporary repairs.
11) Do not lock, tape, wire, etc. the on/off valve in the run
position. The trigger/lever etc. must always be free to return to
Operating
Connect tool to clean supply of compressed air at recommended
pressure. Select chisel/attachment to perform the work task and
ensure that the chisel retainer is securely fitted. Do not use tool
without retainer fitted. The power of the tool may be adjusted by
use of air regulator (20). Always ensure that the working tool is in
contact with the workpiece before pressing the trigger. Running
the tool free will reduce tool life by placing unnecessary high
loads on tool retainers and cylinders.

UT8612-B
UT8613-B
0.401” Shank Air Hammer (Round Shank)
0.401” Shank Air Hammer (Hex Shank)
Page No 3
Feb 2000 Ver 1.3
Ref No Part No Description
2729006 Pin (2)
13 729439 Trigger
14 729871 Ball Seat
16 1001391 Ball
19 732504 O-Ring (2)
21 105021 Handle
24 104024 Regulator
25 104025 Push Rod
26 104026 Spring
27 104027 Intake Bushing
28 104028 Screen
20 732603 Regulator
20 732603 Regulator
31 731030 Upper Valve Case
32 729874 Valve Pin (Large)
33 729875 Valve Pin (Small)
34 731032 Lower Valve Case
35 732031 Valve Disc
36 729876 Piston
37 729877 Medium Cylinder - Round
731185 Medium Cylinder - Hex
40 H0035 Safety Chuck
41 H0045 Quick Change Chuck
42 512 Spring Retainer
43 H0044 Needle Scaler Attachment

Distributor
Notes
Page No 4
Accessories
This document may not be copied wholly or in part by anyone without the consent of the Directors of Universal Air Tool Company Limited
© Copyright of Universal Air Tool Company Limited, established in the United Kingdom, 1994
Declaration of Conformity
Universal Air Tool Company Limited
Unit 8, Lane End Industrial Park, High Wycombe, Bucks, HP14 3BY, England
declare under our sole responsibility that the product
Models UT8612-B & UT8613-B Air Hammer, Serial Number
to which this declaration relates is in conformity with the following standard(s) or other normative document(s)
EN792 (Draft), EN292 Parts 1 & 2, ISO 8662 Parts 1 & 2, Pneurop PN8NTC1
following the provisions of 89/392/EEC as amended by 91/368/EEC & 93/44/EEC Directives
Place and date of issue Name and signature or equivalent marking of authorised person
Lane End D.H.Moppett (Man. Director)
Designed & Written in the U.K.