Clarke X-Pro CAT163, Operating & Maintenance Instructions

10

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

TIGHTENING A NUT

1. Start the nut by hand, ensuring it is not cross threaded, then with the 

appropriate socket installed on the wrench, place it on the nut.

2. With the FORWARD/NEUTRAL/REVERSE selector in the clockwise (FORWARD) 

running position, and holding the wrench firmly in BOTH HANDS, pull the 
trigger.

3. Run each nut up in turn until it is ‘nipped’ up only - do not tighten. When all 

nuts are nipped up, tighten progressively by pulling the trigger fully and 
allowing the action to operate briefly to prevent overtightening.

4. ALWAYS finish tightening with a torque wrench. The weight of the vehicle 

will need to be placed on the wheel to prevent it from rotating while the 
nuts are tightened. Ensure the final torque applied to the nuts meets the 
vehicle manufacturer’s recommendations.

DISCONNECTING THE AIR SUPPLY

1. Do not disconnect the air supply hose until the air supply has been shut 

down and the compressed air released.

2. Refer to the compressor instruction manual for the procedure to shut down 

and release the compressed air.

3. Once the pressure has been released, disconnect the air supply hose from 

the wrench.

MAINTENANCE

Please note that factors other than the tools condition may effect its operation 
and efficiency, such as reduced compressor output, excessive drain on the 
airline, moisture or restrictions in the air-line, or the use of connectors of 
improper size or poor condition which will reduce air supply.

DAILY

1. Before use, drain water from the air-line and compressor.

2. Lubricate the air tool daily for optimum performance. Use a high quality 

airline oil either via a lubricator in the air supply system or by placing a few 
drops into the air inlet immediately before use. This should be carried out 
regardless of whether or not an in-line lubricator is used.

WARNING: MAKE SURE THAT THE WRENCH IS DISCONNECTED FROM THE 
AIR SUPPLY BEFORE STARTING ANY CLEANING OR MAINTENANCE 
PROCEDURES.