Universal Air Tools UT5880 - Manual (Page 2)

Operating
Select suitable drill bit, insert the shank into the drill chuck as far
as possible and tighten chuck with key supplied making sure
that the shank of the device is securely clamped centrally
between the three chuck jaws. Remove chuck key.
When drilling holes of all sizes it is advised to use a pointed
punch to mark the centre at which the hole is to be drilled as
this will provide a starting point for the drill tip. This procedure
will prevent the drill bit from skidding, ensure that the hole is
drilled where intended and help to prevent drill breakage when
using small drills. When drilling, particularly with small diameter
drills, always try to ensure that load applied to the drill is such
that the drill bit is always at right angles to the hole being drilled.
Do not force the drill but allow it to cut.
When drilling always adopt a firm posture to be able to
counteract any sudden movement of the drill due to torque
reaction. Such torque reaction can occur when the drill stalls
due to a too heavy load being applied or the material being too
hard or tough. The torque reaction can occur when the drill
breaks through the material being drilled, particularly on sheet
metal. Always use eye protection and hand protection is
advised, particularly when drilling holes in metals where the
material being removed from the hole is in the form of long
sharp strips. Do not tie the drill chuck key to the drill as the
attaching device i.e. string or chain could become entangled
with the rotating chuck and bit etc.
If using an abrasive device, drilling stone or performing any
operation where dust is created, it is recommended to use a
breathing mask.
Always ensure that the material to be drilled is firmly fixed to
prevent its movement.
It is also recommended that when drilling holes of large
diameter to first pre drill a hole of smaller diameter as this will
reduce effort required to drill the hole and minimise torque
reaction.
Dismantling & Assembly Instructions
Disconnect from air supply
If fitted first unscrew dead handle (40) and remove clamp ring
(41)
Grip motor housing (34) in a vice fitted with soft jaws, hold drill
chuck (1) and unscrew chuck screw (7). Place chuck key
securely into drill chuck (1) and give the key a sharp tap with a
hammer in a direction so as to loosen a right hand thread. If this
fails remove the chuck as it is too tightly fitted. Then see later.
Unscrew clamp nut (2) from motor housing (34) and push out
the internal gear assembly by pushing work spindle (13) from
the front end. The complete internal assembly comprising of 2
ball bearings (4) washer (11) inner collar (5) internal gears (10)
gears (9) pinion gear (14) work spindle (8) and reduction spindle
(13) may be separated. Note: do not attempt to remove the 3
pins from the reduction spindle (13) or (8) from either range.
Pull out motor assembly complete with pin (22) grip the front
end plate (17) by hand and tap the splined end of the rotor (19)
with a non metallic or soft metal (lead or aluminium) hammer to
drive the rotor through the components being held. Take out 5
off rotor blades (20) from the rotor (19) and take off cylinder (21)
Support the rear end plate (18) in a piece of tube with a bore
diameter as close as possible to the maximum diameter of the
rotor and tap the non splined end of the rotor through the rear
end plate (18) and bearing (16)
Unscrew air inlet (38) take out 2 off screws (37) and remove
exhaust diffuser (36)
Drive out pin (33) grip trigger (25) and pull out the complete inlet
and reverse valve assembly
Note: Make sure that the reverse lever is correctly aligned with
the mid position of the slot in the motor housing (34) Take out
o-ring (32) from the bottom on the valve bore in motor housing
(34)
Unscrew set screw (24) and it is then possible to separate
trigger (25) valve spring (26) reverse bushing (31) valve stem
(27) and reverse lever assembly (29) o-ring (28) may be prised
off the valve stem (27) and o-ring (30) off the reverse lever
assembly (29)Note: Do not remove rubber cushion (43) and
steel ball (44) from reverse lever assembly (29) and note that
when reassembling the inlet/reverse valve assembly that the
o-ring (32) is repositioned in the motor housing trigger bore and
slot in the reverse bushing (31) is lined up with pin hole for pin
(33) in motor housing (34)
Reassembly
Clean all component parts and examine for wear before
reassembling. Use only manufacturer or distributor supplied
parts.
Check in particular for wear and cuts on o-rings on rotor blades,
gear and clutch components.
Lightly coat all parts with a suitable pneumatic tool lubricating
oil, preferably one incorporating a rust inhibitor. Pack bearings
and grease gears and clutch parts with a lithium or molybdenum
based general purpose grease.
Before reassembling the motor make sure that the faces of the
end plate (18) and the cylinder (21) are flat and free from burrs.
If necessary lap on a flat very fine abrasive paper. Reassemble
in the reverse order. When refitting the complete motor
assembly to the housing (34) first make sure that the assembly
is clamped tightly together and the rotor spins freely, slide the
assembly with gasket into the housing (34) ensuring that the
motor pin (22) locates in the motor assembly and in the hole in
the bottom of the main bore of housing (34) situated between
the two main ports.
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.
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 When Using A Drill
1) Read all the instructions before using this tool. All operators
must be fully trained in its use and aware of these safety rules.
All service and repair must be carried out by trained personnel.
2) Always select a suitable cutting, abrasive device suitable for
use with this drill.
3) Always shut off the air supply to the drill and depress the
trigger to exhaust air from the feed hose before fitting, adjusting
or removing the device. Remove drill chuck.
4) Always adopt a firm footing and/or position and be aware of
torque reaction developed by the drill.
5) Use only correct spare parts.
6) Check hose and fittings regularly for wear. Do not carry the
tool by its hose and ensure that the hand is remote from the
on/off valve (trigger) when carrying the tool with air supply
connected.
7) Do not exceed maximum recommended air pressure. Avoid
low air pressures as this will allow the drill to stall more easily
and develop torque reaction.
8) Use safety equipment as recommended.
9) The tool is not electrically insulated. Do not use where there
is a possibility of coming into contact with live electricity, gas
pipes, water pipes, etc. Check the area of operation before
performing the operation.
10) Take care against entanglement of moving parts of the tool