PAYLOAD METER RE-INITIALIZATION PROCEDURE This procedure is designed to reset the Payload Meter to clear repeated F.CAL errors. This procedure is necessary to fix a rare condition in the operation of the meter. Indication for this procedure is a repeated display of F.CAL on the meter despite repeated calibration. If possible, download the payload meter before performing this procedure. This proce- dure will erase all memory and user settings. 7. Set the time, date, OP, PL, and UP settings. All other user settings should updated at this time. 8. Calibrate the payload meter by holding the CAL button until CAL flashes. NOTE:
This procedure should be performed before any payload meter is returned for warranty or repair. 9. Release the brake lock (park brake for 330M/HD785), begin driving 5-8 MPH on level ground, and press CAL. CAL should display until the meter finishes its calibration. Before performing this procedure, be sure that the engine inputs into the payload meter can be manipu- lated to indicate engine running and engine stopped. Some payload meter installations have hard-wired these inputs. These inputs must be accessible and able to produce the following input conditions: 10. Load the truck to rated load and drive through one haul cycle. 11.
After dumping the load, wait at least 15 seconds and drive the truck to a safe location. 12. Stop the truck and shut down the engine. 13. Turn on the payload meter but leave the engine off. 14. Hold MODE and LIGHT until "CHEC" flashes. 15. Hold LIGHT and CAL until "A:CLE" flashes. 16. Press CAL to clear the service memory. 17. When "CHEC" is displayed, press MODE to return to normal operation. 1. Turn off all systems. 18. Clear the haul cycle memory by holding MODE until "Cd:dP" is displayed. 2. Turn on the Payload Meter but leave the engine off. 19. Press MODE and "A.CLE" will be displayed. 3. Hold MODE and LIGHT until "CHEC" flashes. 20. Hold CAL until "A.CLE" flashed. 4.
Hold the CAL, TOTAL and LIGHT buttons until "00:00" is displayed. 21. Press CAL once more to clear the haul cycle memory. 5. Press CAL for 2 seconds." 00 00" will flash and the meter will erase its memory and reset to its factory settings. This includes OP, UP, PL, P.SEL, and E.SEL settings. The meter will restart and display "F.CAL". 22. Clear the operator load counter by pressing the TOTAL button until ":" is displayed. 23. Hold the CAL button until the display flashes. 24. Hold the CAL button until "0000" is displayed to clear the memory. 6. Start the engine. 25. The payload meter should now function normally.
M20-34 Payload Meter II M20007.1 03/02 Condition 21C Engine Oil Pressure 21D Alternator "R" Terminal Engine Running Open 24VDC Engine Stopped Ground Open