ToughTek M680a Troubleshooting Advice

Frequently Asked Questions

  • Remove valve by disconnecting swivel unions.
  • Connect hose directly to air motor.
  • Operate motor directly with air regulator.
  • Clear air line; increase air supply.
  • Check that valves are open.
  • Clean the hose or applicator.
  • Clean rod. Always stop pump at bottom of stroke; keep wet cup filled with TSL. 
  • Be sure the inlet ball moves freely.
  • Clean or repair air motor.
  • See motor manual.
  • Clear air line.
  • Increase air supply.
  • Check that valves are open.
  • Clean valves if necessary.
  • Clean the fluid hose on the applicator.
  • Refill the hopper and the prime pump.
  • Clear piston valve. 
  • Service the piston ball check.
  • Replace packings.
  • Clear or service intake valve.
  • See applicator manual; read fluid manufacturer's recommendations.
  • Adjust air needle valve on applicator (see applicator manual).
  • Service spray applicator (see applicator manual).
  • Disassemble and Clean the pump.
  • Try to flush the hose using water hose and/or polyurethane tube.
  • Thin and mix material thoroughly to a lower viscosity.
  • Use a pump system priming fluid (slime). Wet out the system.
  • Use a larger diameter hose.
  • Thoroughly mix in a pump-aid or performance admixture to the material.
  • If no ball valve is immediately available:
    • Bypass the air motor pilot valve so air is always supplied to air motor, regardless of applicator pilot valve position.
    • Control fluid flow by adjusting air regulator pressure up and down as needed.
  • Install new pilot ball valve when one becomes available.
  • Disassemble, clean and repack ball valve with lithium grease.
  • If no ball valve is immediately available:
    • Relieve pressure in system.
    • Remove ball valve.
    • Control fluid flow by adjusting air regulator up and down as needed.
  • Replace ball valve when one becomes available.

Related Articles

Graco