Universal Tool UT8941 User manual

1
INSTRUCTION MANUAL - ENGLISH
Air Auto Shut-Off Pistol Screwdriver
This product is designed for installing and removing threaded fasteners in wood, metal and
plastic. The use of spare parts/ accessories other than those originally supplied by the
manufacturer may result in a drop in performance and/or increased maintenance / noise
level / vibrations. As a result, the full cancellation of the manufacturer’s liability. No other
use is permitted. Professional use only.
Air Supply Requirements
1. Supply tool with 6.35 KG/CM2(90 PSI) clean and dry air. Too much pressure drastically
reduces the tool life.
2. Connect the tool to air line using pipe, hose and fitting sizes shown in the diagram below.
Lubrication
1. Use an air line lubricator with SAE #10 oil. Adjustedto two (2) drops per minute. If an air
line lubricator is not available, add air motor oil to the inlet once a day.
2. For gearing and clutch, use Shell-grade grease containingmolybdenum.
3. Grease clutches every 12,000 screws.
Torque Adjustment
Shut Off Clutch: Grip the tool around the handle and press the tool into the fixing which is
to be tightened. The motor will start and tighten the fixing to the required torque set by
adjusting the tension on the clutch spring. At this point, the internal drive is disengaged and
the air to the motor cut off.
Operating Procedures
Air-inlet
Right/Left Switch
Torque Cover
Bit Retainer Sleeve
Trigger

2
1. Make sure the air in air line is clean and dry.
2. There are three air-inlets on the tool. Depending on different usage, choose one inlet to
connect correctly with the air compressor. Screw up the other two air-inlets separately
with screw caps.
3. Install a bit (as illustrated below). Before using, do check the bit being installed on the
tool correctly.
4. Torque Adjustment: Take off the torque cover and turn the torque adjustment ring right
(clockwise) to increase the torque. Turn the torque adjustment ring left
(counter-clockwise) to reduce the torque. After setting up the torque, put torque cover
back and fasten it tightly to avoid changing set-up accidently. (as illustrated below)
5. Right/Left Indication: Turn right (clockwise) the switch (marked “R”) for tightening screws.
Turn left (counter-clockwise) the switch (marked “L”) for loosening screws.
6. Two ways to operate:
A. Push + Pull The Trigger to Start: Set the bit aiming the screw. Push down the tool
steadily and pull the trigger to activate the motor. When the required torque is reached,
the motor will shut off automatically. Either releasing the trigger or take the tool away
from the fixing will stop the motor. (Dual security design)
B. Push to Start: Press the trigger and push the “Locking” switch to the right to lock the
trigger. Push down the tool steadily to activate the motor. The operation can be repeated
without pulling trigger constantly. When the required torque is reached, the motor will
shut off automatically.
7. Suggestion: Correct / Re-set torques before operation on a daily basis.
8. If the tool is not to be used for a long time, re-set the torque to the lowest.
3
4
12
B
Press & Lock
3
1
2
A

3
1234
Switch Operation of Three Way Air-inlet
Installation of Bit
Press the sleeve softly
Insert a bit
Make sure the bit
is fixed tightly
Shut off
Shut off
Shut off
123
4
123
4
123
4

4
Set-up of Torque
Operation of R/L Switch
12 3
5
4
678
12 3
5
4
678
1L 2L
Shut off 1R 2R
Turn clockwise to
increase the torque
Take off the
adjustment ring
Put the torque
cover back
Fasten the rear
housing tightly
Release and remove the torque cover
Insert torque
adjustment ring to
the tool
Turn counter clockwise
to lower the torque
R Indication –turn right (clockwise)
–fastening screw
L Indication –turn left (counter
clockwise) –loosening screw
1L 2L
1R 2R
1L 2L
1R 2R

5
UT8941 AUTO SHUT-OFF PISTOL SCREWDRIVER, 700rpm / 0.5~4.0Nm

6
INDEX NO.
PARTS NO.
DESCRIPTION QTY/SET
INDEX NO.
PARTS NO.
DESCRIPTION QTY/SET
17120001PS REAR HOUSING 146 7120043PS END PLATE 1
27120061PS-W TORQUE COVER 147 R-1340HH BALL BEARING 1
37120070PG HOUSING CAP 148 7120048PG VALVE 1
47160002PS C RING 149 OR0602 O-RING 1
57120003PS BIT RETAINER SLEEVE 150 7120063PG-BK MOTOR HOUSING 1
67120004PS SPRING 251 7160052PS SCREW 1
77120005PS TORQUE RING 152 7120051PG-RD SWITCH 1
87160006PS REGULATION WASHER 153 HEXM806 SCREW 1
97120007PS NEEDLE 354 7120067PG SCREW CAP 2
10 7120008PS CLUTCH HOUSING 155 OR1898 O-RING 3
11 7120009PS ANVIL BUSHING 156 HEXM308 SCREW 4
12 7120010PS WASHER 157 7120069PG VALVE BUSHING 1
13 7145011PS TORQUE SPRING 158 589058 O-RING 2
14 7120012PS ANVIL 159 7120054PS OPERATING ROD 1
15 7160013PS STEEL BALL 160 OR0302 O-RING 2
16 7160014PS STEEL BALL 261 7160056PS VALVE PLATE 1
17 7120016PS SLIDE BASE 162 7160057PS SPRING 1
18 7120064PS C RING 163 7120068PG SCREW 1
19 7120018PS BALL RACE 164 OR0612 O-RING 3
20 7160019PS STEEL BALL 53 65 7120076PG PLUG 1
21 7120020PS END CLUTCH 166 611239-1 SPRING 1
22 7120021PS CENTER CLUTCH 167 SB0003-1 STEEL BALL 1
23 STB3175 STEEL BALL 268 7120075PG TRIGGER LOCKING 1
24 7120023PS REAR CLUTCH 169 7120073PG SPRING 1
25 7120024PS RETAINER 170 7120065PG TRIGGER PIN 1
26 7160017PS C RING 171 OR0312 O-RING 1
27 7120025PS PILOT PIN 172 7120066PG BUSHING 1
28 B6901ZZ BALL BEARING 173 7120074PG TRIGGER 1
29 7120027PG CENTER HOUSING 174 SPP0214 SPRING PIN 1
30 7145029PS GEAR CAGE 175 7120072PG GRIP 1
31 7145030PS PIN 476 OR2402 O-RING 1
32 7145031PS PLANETARY GEAR 477 ZZ389507 SILENCER 1
33 7145032PS SUN GEAR 178 7120071PG EXHAUST DEFLECTOR 1
34 7160033PS GEAR CAGE 179 861432-3 SCREW 1
35 7145034PS PIN 480 7120062PG AIR INLET 1
36 7145035PS PLANETARY GEAR 481 7160080PS DISTINGUISHABLE RING(4) 1
37 7120036PS INTERNAL GEAR 182 7160064PS TORQUE ADJUSTMENT RING 1
38 RTW-16 C RING 183 CP1HP60 SUSPENSION RING 1
39 L-1680HH BALL BEARING 1
40 7120039PG FRONT PLATE 1
41 308013 SPRING PIN 1
42 7120041PS BLADE 5
43 7120040PS ROTOR 1
44 7120042PS CYLINDER 1
45 SPP0208 SPRING PIN 2
UT8941 AUTO SHUT-OFF PISTOL SCREWDRIVER, 700rpm / 0.5~4.0Nm

7
Division of Florida Pneumatic Mfg Corp.,
851 Jupiter Park Lane,
Jupiter, FL 33458, USA.
Ph: (1) 561 744 9500
Fax: [phone]
EC/UKCA DECLARATION OF CONFORMITY
We FLORIDAPNEUMATICMFGCORP,851JUPITERPARKLANE,JUPITER,FL33458,USA
Declareunderoursoleresponsibilitythatthemachinefallswithintheprovisionsofthe directive:
MachineType: UT8941 AirAutoShut-Off Screwdriver
TechnicalData:
ChuckSize: 1/4”HEXQC FreeSpeed: 700 rpm
Weight: 0.76 kg(1.68lbs) Length: 192 mm(7.56”)
Recommended HoseSize: 10m(3/8”) WorkingAirPressure: 6.3bar(90PSI)
Noise: (soundpressurelevel) 72dB(A) Vibration: 1.81Metres/Sec ²
Spindlesize: N/A Serial No: ________________
Towhichthisdeclarationrelates,isinconformitywiththerequirementsof:TheMachineryDirective2006/42/EC,General
SafetyISO12100:2010,SpecificSafety-ImpactWrenches:ISO11148-6:2012,SpecificVibration- ISO28927,Noise:ISO
15744:2008
Nameandpositionofissuer: TonyLeNeveu:VPEngineering&Development
--------------------------------------------------------------------------------