Universal Air Tools UT4X (4X) - Manual (Page 2)

Dismantling & Assembly Instructions
Disconnect tool from air supply
Grip handle (1) in a vice with soft jaws and unscrew either retainer
spring (21) or beehive spring (22). Spring off exhaust cover (20) and
remove stopper pin (19). This will allow cylinder (2) to be unscrewed
from handle (1). Remove piston (3) from cylinder (2). The valve
assembly comprising of valve box (5), valve (6), valve seat (8) and pin
(7) can be removed from the end of the cylinder and separated, but
carefully note the orientation of the parts to the cylinder (2) for
reassembly. Drive out lever roller pin (15) and handle knock pin (16)
and unscrew inlet bushing (10) and plug (14) to allow lever (18),
assistant lever (17), valve stem(11), O-ring (12) and spring (13) to be
removed from the handle (1). Do not remove throttle bush (9) from
handle (1) unless a replacement is required.
Reassembly
Clean all parts and examine for wear. Replace any worn or damaged
components with parts supplied by the manufacturer or an authorised
representative. Coat all parts with a pneumatic tool lubricating oil, one
preferably containing a rust inhibitor. Ensure correct location of valve
parts to cylinder and tighten cylinder until the stopper pin (19) can be
located in one of the slots in the handle (1) which mates with one of
the holes in cylinder (2). Assemble all other parts in the reverse order.
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/rivet snap 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) Prolonged exposure to vibration may cause injury. 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
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 controlled by the
input air pressure. 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.
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 the 'off' position
when it is released.