Directional valve at hydraulic pump operates but spindle does not advance.
|
Probable Cause |
Check |
Remedy |
| Tool or spindle binding in external support. | Disengage tool and/or loosen bracket containing support. | Realign and cycle. |
| Advance feed rate adjustment at manifold is closed. | Make sure feed rate adjustment is open 4 or 5 turns. | Adjust - Ref. Eng. Data Bul. |
| Plunger valve assembly on advance side of manifold closed. | Turn advance rapid travel length adjustment counterclockwise (clockwise for deep hole units) this action should make the lever arm depress the plunger of the plunger valve assembly. | If plunger does not depress, reset cam follower or lever arm on lever assembly. Ref. Lever Assy. Bul. |
