Universal Tool UT8901 Operator Instructions page 2

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.
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.
Operating
Connect the tool to correct air supply set at the correct pressure.
Ensure that punch is operating correctly - see under
Dismantling/Assembly. Lubricate sheet to be cut with a smear of oil
to help improve life of punch and die. Allow the tool to cut - do not
force. Try to keep the tool so that the centre line of the die and punch
is at right angles to the sheet being cut.
Dismantling & Assembly Instructions
Disconnect tool from air supply.
Locate motor housing (1) in a vice with soft jaws. Unscrew nibbler
head (34) from the motor housing (1) then pull out the crank shaft
(32) and the cam (33) from the nibbler head (34) and remove the 2
bearings (30) Take off the retaining ring (29) and the spacer nut (28)
then pull out the planet gear carrier (27) and remove the 3 planet
gears (26) from the internal gear (25). Tap out pin (3) to remove lever
(2). Remove valve plug (11) to take out O-ring (9) and (10) air
regulator (8) spring (7) throttle pin (6) and O`rings (5) & (4), Pull out
motor assembly from motor housing (1). To dismantle the motor
assembly, grip the front end plate (22) tightly by hand and tap the
gear end of the rotor with a non metallic or soft metal [lead or
aluminium] hammer through the front end plate (22) and bearing
(23). Remove 4 off rotor blades (21) and cylinder (19). Support rear
end plate (17) in a piece of tube with a bore size as close as possible
to the maximum diameter of the rotor and tap the non splined end
of the rotor to remove it from the rear end plate and bearing
assembly. Tap out bearing (23) from front end plate (22) and bearing
(16) from rear end plate (17).
Reassembly
Clean all parts and examine for wear before reassembling. Lightly
coat all parts in oil and pack bearings, head and gearbox with a
lithium or molybdenum based general purpose grease. Assemble in
the reverse order.
To set the Nibbler Head for Cutting
Take off nut (40) with anvil (41) then undo the Hex screw (39) on
the slide pin (37) and insert a new punch (38) the retighten the hex
screw (39) and make sure the slide pin bushing (36) is still in place,
then relocate the anvil (41) to the desired angle. Screw back the nut
(40) and its ready to cut again.
Safety Rules For A Nibbler
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.
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.
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