Directional value 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 unit or external support.
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 counter clockwise, (clockwise for deep hole units). This action should 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.