Lincoln Electric Welder Ranger 330MPX

- Shut off power to the machine

- Using a T-30 Torx bit, remove the 8 screws securing the casevback and remove the case back

- Using a 5/8” socket and impact wrench, remove the rotor through bolt and then remove the rear alternator fan. Note there isvLoctite on the rotor through bolt - Remove leads 200 and 219 from the brush holder

- Using a 10mm wrench, remove the two screws securing the brush holder assembly. Lift the brush holder assembly up and then out

- Examine the brushes for chips, cracks or excess or uneven wear. The brush should be at least 1⁄4” long. Verify the brush springs are operating and are not stuck. Replace the brush assembly as needed. Inspect the rotor slip rings for grooves or excess wear

- Reassemble the brush holder assemble and tighten the bolts to 41 in-lbs

- Connect leads 200 and 219 to the brush holder;

- Remove the cap from the drain valve. Push in and twist the yellow drain valve counter counterclockwise. Then pull the valve out and drain the oil into a suitable container

- Close the valve by pushing in and twisting clockwise. Replace the cap. Close valve and valve cap before adding oil and running the engine - Remove the old oil filter. Use Channel Lock No. 209 pliers if the filter is stuck

- Clean the oil filter mounting surface, and coat the new oil filter gasket with clean oil

- Screw on the new oil filter by hand until the gasket touches the mounting surface. Then tighten the oil filter an additional 1⁄2 to 7/8 turn

- Add oil until to the upper limit mark on the dipstick. Tighten the oil filler cap securely

- Start the engine and check for leaks

- Stop the engine and check the oil level. If necessary, add oil to the upper limit mark on the dipstick;

- Check the fuel filter for water accumulation or sediment

- Replace the fuel filter if it is found with excessive water accumulation or sediment;

- Loosen the cover retaining knob and remove the cover

- Remove the pre-cleaner from the paper element

- Wash the pre-cleaner in warm water with detergent. Rinse the pre-cleaner thoroughly until all traces of detergent are removed. Squeeze out excess water (do not wring). Allow the pre-cleaner to dry

- Reinstall the pre-cleaner over the paper element

- Reinstall the air cleaner cover. Secure the cover with the cover retaining knob

- Loosen the cover retaining knob and remove the cover

- Remove the pre-cleaner from the paper element