© Copyright – AirApp Power Tools GmbH • Siemensstr. 9 – 11 • 40885 Ratingen 2
Scope of delivery
Open the packaging and check the contents.
1 x compressed air device
1 x dehumidier
1 x safety regulations
1 x EC Declaration of Conformity
1 x operating instructions
1 x technical specications
1 x spare parts list
Function of “torque-limited” impact wrench
•The “torque-limited” impact wrench is a compressed air device and is used for releasing or tightening of screw con-
nections on passenger car wheels. For doing so, it is essential to check the wheel bolts with a torque wrench,
since most manufacturers' specications are above 90 Nm (e.g. 110 Nm for alloy wheels and 120 Nm for steel
rims)!
•Never use the “torque-limited” impact wrench for any other purpose.
•Please observe the safety regulations!
Application of “torque-limited” impact wrench
When working with compressed air devices, observe the safety regulations!
The structure of the “torque-limited” impact wrench is shown in detail in the spare parts list.
Essentially, the “torque-limited” impact wrench consists of the following main components:
1. Square drive shaft:
For mounting the socket. Attention! For impact wrenches, use only shock-resistant sockets!
2. Reversing switch:
For reversing the rotation of the square drive shaft.
3. Trigger
Starts the device.
Performance / torque information
Attention! Since the performance/torque is heavily dependent on the available ow pressure and its properties, it is
not possible to guarantee repeat accuracy. The performance and available torque also depend to a large extent on
the user and the duration of operation. It is therefore essential that only trained, qualied personnel work with these
compressed-air devices.
Information for operation
•Connect device to the compressed air supply.
•The socket must slide tightly on the drive spindle.
•To release the socket, pull vigorously to overcome the clamping action of the socket catch.
Soiling might result in the socket getting jammed. In this case it may be useful to spray a little lubrication oil into the
mount, and to tap lightly on the socket with a rubber mallet. Make sure to clean all components after successful
disconnection.
•The machine starts when the trigger is pulled. The machine stops when the trigger is released again.
•To reverse the rotation of the drive spindle, use the reversing switch. The direction of rotation is indicated on the
device.
•To prevent an unwanted reaction torque, always check the position of the reversing switch before use.
•Use the reversing switch only when the drive spindle is standing still. Attention! Failure to observe this might de-
stroy the drive assembly of the machine.
• Always hold the machine rmly by hand to ensure correct function.
•Attention! Use only shock-resistant sockets. Replace worn sockets immediately.
•The drive spindle, socket and screw/nut must always be aligned to ensure safe and proper function.
Never use the “torque-limited” impact wrench on screw connections for which it is not designed, or that cannot be
released. Doing so might destroy the impact wrench, socket or screw connection.
Test the “torque-limited” impact wrench beforehand on a test screw connection in order to determine the required
time for tightening a screw/nut.
• After tightening wheel bolts/nuts, always use a torque wrench to check according to manufacturer's speci-
cations. For these torque specications, refer to the vehicle operating instructions.
•Tightening or releasing torques depend on many factors:
If the air ow pressure is below 6.2 bar, the tightening or releasing torque will also be reduced.
Worn sockets and socket adapters will reduce the tightening and releasing torques.
Tightening and releasing torques vary with different screw/nut sizes.
