# Preventive Maintenance Level 2

Carry out maintenance after 350 000 - 450 000 tightenings, see table Reference Tightening, or every second year whichever comes first.

For maximum tool performance follow below instructions and use recommended service tools and service kits from Atlas Copco. Always use tightening torque and lubrications as recommended by Atlas Copco.

Same as level 1 with additional Pulse unit maintenance below:

## Pulse Unit

- Drain all the oil completely from the Pulse unit.

- Disassemble the Pulse unit.

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

- Inspect the shut-off mechanism and replace damaged or worn parts.

- Clean the magnets from any metal particles with a cotton pin.

- If replacing the rollers we strongly recommend replacing the pistons as well.

- Change all O-rings and Diaphragms.

- 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.

- Make sure to assemble the Pulse unit in the right way. It is important that the camshaft and the separator washer pin is lined up with the groove in the cylinder front piece. If not, the cylinder end piece will not be correctly fastened and the Pulse unit will not function correctly.

- Fill the Pulse unit to the right oil level.

Relevant Information

- Oil Filling and Changing Instruction for Pulse Unit
- Preventive Maintenance