Universal Tool UT8920B Specifications

Personal Safety Equipment
Use - Safety Glasses Yes
Use - Safety Gloves
Use - Safety Boots
Use - Breathing Masks
Use - Ear Protectors
Manufacturer/Supplier Product Type RPM
Cycles Per Min
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
No
Page No 1
Saw
UT8920B
1.32
0.6 3/8 10 30 10
10,000
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
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 the 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.
Foreseen Use Of The Tool
This tool is designed for the purpose of sawing materials when fitted
with the saw blades supplied by, or recommended by the
manufacturers. Do not use the tool for any other purpose than that
specified without consulting the manufacturer or the manufacturers
authorised representative. Do not modify the tool even for intended
use as a saw.
Putting Into Service
Air Supply
Use a clean lubricated
air supply that will give
a measured air pres-
sure 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
Tel No Fax No(01494) 883300 (01494) 883237
Vibration Level
Test Method Tested in accordance with ISO
standards 8662 Parts 1 & 12
22.6
Noise Level Sound Pressure Level 79.0 dB(A)
Test Method Tested in accordance with Pneurop
test code PN8NTC1 and ISO Standard 3744
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 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.
Metres / Sec²
Air Pressure
Recommended Working 6.3 bar 90 PSI
Recommended Minimum n/a bar n/a PSI
Maximum 7bar 100 PSI

Page No 2
Safety Rules For A Saw
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.
Operating
To fit saw blade (35) first remove screw (38) and pull back cover (26).
Slacken 2 off screws (30) and push blade with the widest end into
blade chuck (33) as far as it will go and tighten 2 off screws (30), pull
back cover (26) and replace screw (38). Connect tool to suitable air
supply. Let the saw blade cut and never load the tool too heavily as
this may cause the blade to break. This tool has a high vibration level
and should only be used for short periods of time before resting.
Dismantling & Assembly Instructions
Disconnect tool from air supply.
Unscrew screw (38) and pull back chuck cover (26) and take out 2
off screws (21) to remove bridge (41) and 2 off blade guides (40).
Note the orientation of the blade guides in relation to the assembly for
refitting. Unscrew 2 off set screws (30) to remove the blade (35). Take
out grub screw (46). Locate a 7mm spanner on the flats of the piston
assembly (29) and unscrew blade chuck (33) from piston assembly
(29). Take out spring (45). Remove 2 off set screws (24) and pull out
work guide (34).
Remove 4 off cap screws (10) together with 4 off lock washers (11)
and take off the back end control assembly. Hold assembly in a vice
and drive out pin (12) to remove safety throttle lever (13). Unscrew
inlet bushing (9). With a wide bladed screwdriver remove valve screw
(1) with O-ring (2) and take out air controller (4) with O-ring (3). Take
out spring (5) and valve stem (6) with O-ring (7), Do not remove brass
bush (8) from valve block (23) unless a replacement is required. Take
off gasket(22). Grip housing (28) and tap the front end of piston
assembly (29) to drive it out of the rear end of the housing (28).
To dismantle the piston assembly grip with a 7mm spanner the flats
on piston assembly (29) and unscrew cap screw (21) with washer
(20). Pull out piston from valve case (15). Push actuate valve (19) from
rear of valve case (15). Do not remove valve sleeve (18) and 2 off pins
(14) from valve case (15).
Pull out rear bumper (43) from valve case (15). Cylinder (17) may be
pressed out from front end if it or the front bumper (42) needs to be
replaced. Bushes (25) may be pressed out of housing (28). If chuck
cover (26) needs to be replaced tap pins(44) - 2 off and these will
pass into the chuck cover. It will be necessary to use 2 off new pins
(44) to fit the new chuck cover.
Screw (38) is retained to prevent loss of screw by clip (37).
Reassembly
Clean all parts and examine for wear. Use only distributor or
manufacturer supplied replacement parts. Look for wear on seals and
bearing. Coat all parts with a pneumatic tool lubricating oil preferably
one containing a rust inhibitor and reassemble in the reverse order.
Make sure the saw blade is correctly fitted.
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.

UT8920B Saw
Page No 3
Oct 98 Ver 1.1
Ref No Part No Description
1730121 Valve Screw
2729091 O-Ring
3729088 O-Ring
4730125 Air Controller
5729258 Valve Spring
6729862 Valve Stem
71008173 O-Ring
8721138 Valve Bushing
9729162 Inlet Bushing
10 732001 Cap Screw (4)
11 900211 Washer (4)
12 729167 Lever Pin
13 900212 Throttle Lever
14 729205 Pin (2)
15 700121 Valve Case
16 900214 Bush
17 900215 Cylinder
18 900216 Valve Sleeve
19 900217 Actuate Valve
20 900218 Washer
21 900219 Cap Screw (3)
22 700122 Gasket
Ref No Part No Description
23 700123 Valve Block
24 900222 Set Screw (2)
25 900223 Bush (2)
26 900281 Chuck Cover
28 700124 New Housing
29 900227 Piston Assembly
30 900228 Set Screw (2)
31 900282 Service Wrench (2mm)
33 900284 Blade Chuck
34 900232 Work Guide (Long)
900289 Work Guide (Short)
35 H0403 Blade
36 900234 Service Wrench (4 mm)
37 732447 O-Ring
38 729336 Screw
40 900285 Blade Guide (2)
41 900286 Bridge
42 700125 Front Bumper
43 700126 Rear Bumper
44 731939 Roll Pin (2)
45 900290 Spring
46 900039 Screw

Distributor
Notes
Page No 4
Accessories
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
Model UT8920B Saw, 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 & 12, 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 authorized person
Lane End D.H.Moppett (Man. Director)
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
Designed & Written in the U.K.
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