norbar PNEUTORQUE PT 72 Series User manual

OPERATOR’S MANUAL
PNEUTORQUE®
PT 72 SERIES
500/1000/1500/2000 STALL TOOLS
Part Number 34309 | Issue 2 | Original Instructions (English)
NORBAR TORQUE TOOLS LTD
Beaumont Road, Banbury,
Oxfordshire, OX16 1XJ
UNITED KINGDOM
Tel + 44 (0)1295 270333
Email [e-mail]
NORBAR TORQUE TOOLS PTY LTD
45–47 Raglan Avenue, Edwardstown,
SA 5039
AUSTRALIA
Tel + 61 (0)8 8292 9777
Email [e-mail]
NORBAR TORQUE TOOLS INC
36400 Biltmore Place, Willoughby,
Ohio, 44094
USA
Tel + 1 866 667 2279
Email [e-mail]
NORBAR TORQUE TOOLS (NZ) LTD
B3/269A Mt Smart Road
Onehunga, Auckland 1061
NEW ZEALAND
Tel + 64 9579 8653
Email [e-mail]
NORBAR TORQUE TOOLS PTE LTD
194 Pandan Loop
#07-20 Pantech Business Hub
SINGAPORE 128383
Tel + 65 6841 1371
Email [e-mail]
NORBAR TORQUE TOOLS (SHANGHAI) LTD
E Building–5F, no. 1618 Yishan Road,
Minhang District, Shanghai
CHINA 201103
Tel + 86 21 6145 0368
Email [e-mail]
NORBAR TORQUE TOOLS INDIA PVT. LTD
Plot No A-168, Khairne Industrial Area,
Thane Belapur Road, Mahape,
Navi Mumbai – 400 709
INDIA
Tel + 91 22 2778 8480
Email [e-mail]
www.norbar.com
© Norbar Torque Tools Ltd 2005

1
CONTENTS
Part Numbers Covered by This Manual 1
Safety 2
Introduction 3
Parts Included 3
Accessories 3
Features and Functions 4
Set up Instructions 5
Torque Reaction 6
Setting Clockwise/Counter-Clockwise Operation 7
Setting Torque for Bolt Tightening 7
Setting Torque for Releasing Bolt 7
Operating Instructions 8
Tightening 8
Releasing 8
Maintenance 9
Air Lubrication 9
Gearbox 9
Silencer 9
Drive Square 10
Cleaning 10
Disposal 10
Specifications 11
Declaration of Conformity 12
Trouble shooting 13
Glossary of terms 13
PART NUMBERS COVERED BY THIS MANUAL
This manual covers all “PT 72mm series” tools supplied with pistol grip handles; including the following:
Part Number
Model
Square
Maximum Torque
18023
PT 72/500
3/4”
500 N∙m
18023.AUT
PT 72/500 Auto 2 speed
18022
PT 72/1000
3/4”
1000 N∙m
18022.AUT
PT 72/1000 Auto 2 speed
18026
PT 72/1000
1”
1000 N∙m
18026.AUT
PT 72/1000 Auto 2 speed
18021
PT 72/1500
1”
1500 N∙m
18021.AUT
PT 72/1500 Auto 2 speed
18033
PT 72/2000
1”
2000 N∙m
18033.AUT
PT 72/2000 Auto 2 speed
PT 72mm series tools are also supplied in a ‘remote’ form without a handle. These are covered by operator’s
manual part number 34310.

2
SAFETY
IMPORTANT: DO NOT OPERATE THE TOOL BEFORE READING THESE INSTRUCTIONS. FAILURE
TO DO SO MAY RESULT IN PERSONAL INJURY OR DAMAGE TO THE TOOL.
This tool is intended for use with threaded fasteners. Any other use is not recommended.
The use of ear protectors is recommended.
Do not use tool in potentially explosive atmosphere as these tools contain grease, which may cause an
explosion hazard in the presence of pure oxygen. These tools also contain aluminium alloy components
which may cause a hazard in certain explosive environments.
Be aware of unexpected tool movement due to reaction forces as this may cause injuries. Failure of the drive
square may also cause unexpected tool movement.
Isolate the tool from all energy sources before changing or adjusting the drive square or socket.
There is a risk of crushing between the reaction bar and work piece.
Keep hands away from reaction bar.
Keep hands away from tool output.
Keep loose clothing, hair, etc. from being caught in any rotating part of the tool.
These tools require a reaction bar. See section on Torque Reaction.
Ensure all hoses are correctly fitted before switching on the air supply. This avoids the risk of injury by
whipping air hoses.
Unexpected direction of inserted tool movement can cause a hazardous situation.
Use only sockets and adaptors which are in good condition and are intended for use with power tools.
Pneutorque® Wrenches are reversible, non-impacting, torque controlled bolt tightening tools and must
always be operated with the following:
 Clean dry air supply with a minimum flow of 11 litres/sec (23 CFM).
 Lubro Control Unit or similar Filter, Regulator and Lubricator Unit 1/2” Bore (12 mm).
 Impact or high quality sockets.
 Reaction Plate.

3
INTRODUCTION
The Pneutorque® 72mm series are air driven power tools designed for applying torque to threaded fasteners.
An external pressure regulator (Lubro Control Unit) is needed; this allows the air pressure to be adjusted to
determine the stall torque from the graph provided. There are models to cover torque capacities of 500 N∙m to
2000 N∙m.
Parts Included
Part Number
Description
Quantity
180***.***
Pneutorque®
1
18290
Reaction Adaptor
1
18298
Reaction Plate
1
18343.148
Lifting Handle (Only PT 72/****)
1
18343.220
Lifting Handle (Only PT 72/****.AUT)
1
26588
Reaction Plate Retaining Circlip
1
34309
Operators Manual
1
34209
Air Pressure Graph
1
Accessories
Part Number
Description
18349.006
6” Nose Extension
18349.009
9” Nose Extension
18349.012
12” Nose Extension
18349.015
15” Nose Extension
18349.018
18” Nose Extension
18221
¾” Drive Square
18220
1” Drive Square
18292
Single-sided Reaction Plate
18293
Double-sided Reaction Plate
18286
Lifting Arm
18266
Silencer
16074
Lubro Control Unit
*****
Annular Transducer

4
FEATURES AND FUNCTIONS
Replaceable Drive Square
All tools are fitted with a ¾” (19mm) or 1” (25mm) drive square that can easily be replaced.
Trigger
The trigger controls the flow of air. The more the trigger is pressed the more air flows into the tool. This allows
for slow positioning of socket and reaction plate. Once positioning is complete, the trigger must be fully
depressed for correct torque application.
Clockwise / Counter-Clockwise Selector
This option can be used for releasing bolts as well as tightening. The selector is located at the back of the
handle for easy access.
Gearbox
For safety the gearbox and handle can turn independently, so torque reaction is never transmitted back to the
operator.
Lifting Handle
The lifting handle allows comfortable and safe use of the tool.
Non-Impacting
Low vibration levels make these tools comfortable and safe for the operator to use. In addition there is less
damage to the tool, socket and threaded assembly.
Reaction Plate
The reaction plate ensures all reaction forces are contained, so that torque reaction is not passed back to the
operator.
Compatible With Measurement Products
Torque transducers and angle encoders are available for most models. These form the basis of sophisticated
control systems giving repeatability of up to +/- 2%.
Automatic Two Speed (.AUT)
Automatic two speed gearbox versions reduce the run down time.

5
SET UP INSTRUCTIONS
WARNING: TO AVOID HAZARD FROM WHIPPING AIR HOSES MAKE ALL
CONNECTIONS TO THE TOOL BEFORE TURNING ON THE AIR SUPPLY.
Make sure all air hoses are clean and free from dirt.
Connect the tool air inlet hose (A.) to the outlet side of the pressure regulator unit, observing air flow direction
arrows. Use a ½” bore hose with a maximum length of 3m.
TIP: To connect the air inlet hose to a 1/2” bore hose use a ½” BSP Male/Male connector. A pair of
spanners will be required to perform this task (22mm (7/8”) A/F and 24mm (15/16”) A/F open-
ended spanners).
Connect the inlet side of the pressure regulator unit to the air supply using a minimum hose size of ½” bore
(12mm). Avoid using ½” bore hoses of longer than 5 meters from the supply to the pressure regulator unit as
this will reduce the performance of the tool.
Check the oil level in the lubricator and fill to the correct level. (See
MAINTENANCE section).
Attach the Reaction Plate (B.) to Reaction Adaptor (C.) adjacent to the Output
Drive (D.) of wrench ensuring the Locking Plunger (E.) is correctly engaged in
the Reaction Plate. Fit circlip to secure Reaction Adaptor.
If required fit lifting handle (Figure 2) to top of the Air Motor Housing (F.).
Adjust the handle position so the wrench can be held comfortably. Tighten the
socket screws securely.
Clockwise/Counter-
Clockwise Switch
(G.)
Handle
(I.)
Trigger (H.)
Air Motor Housing (F.)
Reaction Plate
(B.)
Locking Plunger
(E.)
Reaction Adaptor
(C.)
Output Square
Drive (D.)
Air Inlet (A.)
FIGURE 2
FIGURE 1

6
Torque Reaction
It is essential the reaction plate rests squarely against a solid object or surface adjacent to the fastener to be
tightened. The contact area must be within the shaded area of Figure 3, with the contact area as large as
possible.
WARNING: CARE MUST BE TAKEN TO ENSURE THAT THE REACTION PLATE IS
ONLY USED WITHIN THE LIMITATIONS SHOWN IN FIGURE 3.
For special applications or where extra deep sockets must be used the standard plate may be extended but
only within the limitations shown on Figure 3. Alternative reaction devices are available.
WARNING: FAILURE TO OBSERVE THE LIMITATIONS SHOWN IN FIGURE 3 WHEN
MODIFYING STANDARD REACTION PLATES MAY RESULT IN
PREMATURE WEAR OR DAMAGE TO THE TOOL.
Standard drive square extensions MUST NOT be used as these will cause serious damage to the tool output
drive. A range of nose extensions is available for applications where access is restricted. These are
designed to support the final drive correctly.
When the Pneutorque® is in operation the reaction plate rotates in the opposite direction to the output drive
square and must be allowed to rest squarely against a solid object or surface adjacent to the bolt to be
tightened. (See Figure 4).
WARNING: ALWAYS KEEP HANDS CLEAR OF THE REACTION PLATE WHEN THE
TOOL IS IN USE OR SERIOUS INJURY MAY RESULT.
Clockwise Operation
Anti-Clockwise Operation
Reaction point
FIGURE 4
FIGURE 3
Torque Reaction should be
taken in the shaded areas only
Extra Length
Socket
Standard Length
Socket

7
Setting Clockwise/Counter-Clockwise Operation
WARNING: FAILURE TO FULLY ENGAGE THE CLOCKWISE/COUNTER- CLOCKWISE
OPERATION SELECTOR WILL RESULT IN DAMAGE TO THE SELECTOR
VALVE.
Setting Torque for Bolt Tightening
These tools use the air pressure set on an external pressure regulator unit to determine the stall torque.
They are supplied with an Air Pressure Graph which relates torque output to air pressure. Set the torque
output as follows:
1. Ensure the Clockwise/Counter-clockwise Selector (Figure 5 & Figure 6) is correctly set.
2. Establish the air pressure required using the Air Pressure Graph.
3. With the tool running, adjust the pressure regulator until the correct figure is shown on the gauge.
IMPORTANT: THE WRENCH MUST BE FREE RUNNING WHILE ADJUSTING THE AIR PRESSURE
TO GIVE THE CORRECT SETTING.
WHILE THE WRENCH IS FREE RUNNING CHECK THAT LUBRO CONTROL UNIT IS
SUPPLYING APPROXIMATELY SIX DROPS OF OIL PER MINUTE.
Setting Torque for Releasing Bolt
1. Ensure the Clockwise/Counter-clockwise Selector (Figure 5 & Figure 6) is correctly set.
2. Pull trigger to loosen fastener.
TIP: Increase air pressure slightly if fastener will not release.
WARNING: EXCEEDING THE MAXIMUM AIR PRESSURE WILL CAUSE OVERLOADING
AND MAY LEAD TO SERIOUS DAMAGE.
WARNING: CHANGING THE AIR PRESSURE AFTER SETTING THE PRESSURE
REGULATOR WILL CHANGE THE STALL TORQUE VALUE.
FIGURE 5 – Clockwise
FIGURE 6 – Counter-clockwise

8
OPERATING INSTRUCTIONS
WARNING: KEEP HANDS CLEAR OF THE REACTION PLATE.
WARNING: WHEN USING THIS TOOL IT MUST BE SUPPORTED AT ALL TIMES IN
ORDER TO PREVENT UNEXPECTED RELEASE IN THE EVENT OF
FASTENER OR COMPONENT FAILURE.
WARNING: CHANGING THE AIR PRESSURE AFTER SETTING THE PRESSURE
REGULATOR WILL CHANGE THE STALL TORQUE VALUE.
Tightening
1. Fit Pneutorque® with the correct size impact or high quality socket.
2. Ensure the Clockwise/Counter-clockwise Selector is correctly set.
3. Rotate tool and reaction plate into a convenient position.
Fit the tool onto the fastener.
Locate reaction plate adjacent to the reaction point.
4. Adopt a suitable posture to counteract normal or unexpected
movement of the tool due to reaction forces.
5. Gently press Trigger to bring the reaction plate into contact
with the reaction point.
6. Fully press trigger and keep fully depressed until tool stalls
then release trigger.
If the trigger is not fully pressed full torque will not be applied to the fastener.
7. Remove tool from fastener.
Releasing
1. Fit Pneutorque® with the correct size impact or high quality socket.
2. Ensure the clockwise/counter-clockwise selector is correctly set.
3. Rotate tool and reaction plate into a convenient position.
Fit the tool onto the fastener.
Locate reaction plate adjacent to the reaction point.
4. Adopt a suitable posture to counteract normal or unexpected
movement of the tool due to reaction forces.
5. Gently press Trigger to bring the reaction plate into contact
with the reaction point.
6. Fully press trigger and keep fully depressed until bolt releases.
TIP: If unable to release the bolt increase the air pressure to the tool. Do not use excessive air
pressure.
WARNING: EXCEEDING THE MAXIMUM AIR PRESSURE WILL CAUSE OVERLOADING
AND MAY LEAD TO SERIOUS DAMAGE.
7. Remove tool from fastener.