Figure 4-6. Clutch Plate Wear Limits
Place the clutch on a working surface, hub-and-back plate (2, figure 4-7) down.
Unscrew the hex-socket-head setscrew (15) from the special nut (14) until the nut is free to turn.
Remove the special nut (14) from the hub-and-back plate. Use a spanner or chain wrench.
Figure 4-7. Mud Pump Drive Clutch