Operation in Sand or Dust
Keep lubricants free from dust and grit. Keep lubrication points on the M12A1 PDDA clean. Do not
overlubricate, because dust and grit may adhere to the lubricant and may later work itself into lubricated
areas. Keep the cover panel and the dust cover in place as much as possible. Position the pump unit
assembly in a direction that will afford the greatest protection to the engine compartment. Service the
engine air cleaner at more frequent intervals. Keep a close watch on the air cleaner restriction indicator.