Directional valve at hydraulic pump operates but spindle does not advance PDF Print E-mail

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.