UNDERDRIVE Clutch
WARNING: This page is about a different variant/trim than selected.
| 1 - AIR PRESSURE TEST PLATE 6599-1 |
| 2 - AIR NOZZLE |
Because this clutch piston cannot be seen, its operation is checked by function. Use an air nozzle (2) to apply air pressure is to the low/reverse or the 2/4 clutch opening in Test Plate 6599-1 (2). This locks the output shaft. Use a piece of rubber hose wrapped around the input shaft and a pair of clamp-on pliers to turn the input shaft. Next apply air pressure to the underdrive clutch. The input shaft should not rotate with hand torque. Release the air pressure and confirm that the input shaft will rotate.