# Preventive Maintenance Level 2

## Maintenance level 2

Do maintenance after 12.000.000 pulses, when the POWER FOCUS controller shows the message: "Pulse unit oil level low”, or every other year, whichever comes first.

For maximum tool performance follow the instructions and use the recommended service tools and service kits from Atlas Copco. Make sure to use all the parts included in the service kits. Always use the tightening torque and the lubrications recommended by Atlas Copco.

Start to do the maintenance in Preventive Maintenance Level 1 and then continue as follows:

Pulse unit: Always use lint-free cloth when servicing the pulse unit

- Drain the oil fully from the pulse unit.

- Disassemble the pulse unit (see spare parts list).

- Clean and inspect all parts and surfaces thoroughly for any wear or damage.

- Clean the magnets from any metal particles.

- Replace the rollers, pistons, cam shaft and ball check valve if any of them are worn.

- Replace all o-rings.

- Replace the anvil sealing. Make sure that the cylinder front piece is clean and dry on the inside, with no lubrication, before assembling the new sealing.

- Make sure that the anvil surface is smooth, clean and lubricated with pulse oil to prevent damages to the anvil sealing during assembly.

- Line up the groove in the cylinder front piece with the cam shaft and the separator washer pin. If these are not lined up, the cylinder end piece will not be correctly fastened, and the pulse unit will not operate correctly.

- Fill the pulse unit with the correct quantity of oil. See Oil Filling and Changing Instruction for Pulse Unit.