Universal Air Tools UT5807 - 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
To remove the chuck (59) first open the chuck jaws with the key
provided and remove chuck screw (55) left hand thread. Place
chuck key securely into chuck and give the key a sharp tap so
as to unscrew a right hand thread. Grip motor housing (1) in a
vice with soft jaws on the flats at the rear end. Drive out pin (10)
and take off the throttle lever (9) Unscrew inlet bushing (3) With
a needle pointed tool, prise out deflector retainer (6) pull out
deflector (4) Unscrew 2 off screws (8) and take off body cap (7)
and gasket (11) Unscrew valve together with o-ring (13) and
reverse retainer (20) and take out spring (14) and pull out valve
pin (15) and o-ring (16)
Pull out reverse valve (23) Do not remove either of the brass
bushes in the motor housing (1) unless replacements are
required. If necessary reverse bush (18) can be taken out of the
motor housing (1) by first removing pin (22) With circlip pliers
remove retainer ring (52) and pull out spindle assembly. Remove
bevel gear (44) and key (49) Drive spindle (48) through bearing
(50) but do not remove grease plug (54) unless a replacement
is required.
Slacken lock ring (35) and then unscrew angle head (45) [left
hand thread] from main assembly. Take out gear drive assembly
and dismantle by pressing pinion gear (43) off bearing (42). Take
out planet gear with pins assembly (39) 3 off idler gears (37) and
internal gear (36) Pull out the motor assembly complete with
cylinder pin (32) from motor housing.
Grip the front end plate (33) by head and with a non metallic or
soft metal [lead or aluminium] hammer tap the splined end of
the rotor (30) to drive it through the front end plate (33) and
bearing (34) assembly. Tap out bearing (34) front end plate (33).
Remove cylinder (29) and take out five rotor blades (31) from
rotor (30) support rear end plate (28) in a piece of tube with a
diameter as close as possible to the maximum diameter of the
rotor and tap the non splined end of the rotor to drive it through
the rear end plate (28) and bearing (25)
Take out motor gasket (27) from motor housing (1)
Reassembly
Clean all component parts and examine for wear before
reassembling. Use only manufacturer or distributor supplied
parts.
Check in particular for wear on bevel gears, o-rings and rotor
blades.
Lightly coat all parts with a suitable pneumatic tool lubricating
oil, preferably one incorporating a rust inhibitor. Pack bearings
and grease gears and bevel gears with a lithium or molybdenum
based general purpose grease. Reassemble in the reverse order
taking note of the following:
1) When fitting gasket (27) make sure that it does not cover
the ports and is positioned correctly.
2) Make sure that the motor locating pin locates correctly in
the holes in the motor end plates and in the small hole
between the two ports at the bottom of the bore of the
motor housing
3) For the motor assembly, ensure that the motor end plates
that abut the cylinder are flat and are free from burrs and
sharp edges. If necessary lap the faces on a fine grade of
abrasive paper laid on a flat surface.
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
with clothing, ties, hair, cleaning rags, etc. This will cause the
body to be moved towards the work process and can be very
dangerous.
11) Do not attempt to hold or guide the drill chuck when the tool
is running. Keep hands clear of the drilling process.