Directional valve operates but spindle does not retract.
|
Probable Cause |
Check |
Remedy |
| Tool or spindle binding in external support. | Disengage tool and/or loosen bracket containing support. | Realign unit or external support. |
| Low air pressure. | Air pressure should be above 50 psi. | Regulate per Eng. Data Bul. |
| Plunger valve assembly on retract side of manifold closed. | Turn retract cam bar knob to make lever arm depress plunger of plunger valve assembly. | If plunger does not depress, reset cam follower or lever arm on lever assembly. Ref. Lever Assy. Bul. |
| Retract feed rate adjustment in manifold closed. | Turn retract feed rate knob counterclockwise to open. | Adjust. |
| Drive shaft and spindle coupling bind. | Remove spindle assembly and check spline tube for metal building up. | File drive spline and spline tube for free slip movement. Lubricate. |
