15. A good suspension will show lots of motion as the truck drives around and the suspensions bounce around. When the truck is loaded and running, the rear suspensions tend to move in opposite directions. When the left pressure goes up, the right pressure will go down. This is due to the rocking motion of the rear axle as the truck travels. Notice that there is plenty of 'noisy' motion shown in the loaded pressures. This suspension is in good shape. ·As shown in the previous examples, Scope can be used to create log files of the suspension pressure data. Graphs of this data can give be used to determine the relative health of the suspensions.
Pressure Sensor Dummy Loads A series of dummy loads is now available that simulate a pressure sensor input to the payload Meter. These can be placed on the harness in place of a pressure sensor. This can be used to troubleshoot harness and connector problems between the payload meter and suspension pressure sensors. The payload meter will read each load within the pressure range indicated. M20-64 Payload Meter II™ Troubleshooting M20007.2 3/02 Part Number Description EJ5366 970-1150 psi load EJ5367 710-870 psi load EJ5368 490-625 psi load EJ5369 290-410 psi load