What was found
(CAN) RUDDER FULL PRESSURE AND RUDDER PRESSURE CAUTION ILLUMINATED IN CLIMB AT ABOUT 5000 FT AT 140-150 KNOTS WITH PITOT/STAT TEST BOX IND 160 KTS WAS ABLE TO DUPLICATE FAULT. WHEN RUD 1 POWERED FLT CONTROL SO SWITICH CYCLED WAS NOTED THAT NR1 RUDDER HYD CAUTION WOULD NOT EXTINGUISH. ATTEMPED TO SWAP NR 1 & 2 SOLENIOD VALVES ON RUDDER PRESSURE REGULATOR AND FOUND BOTH SPOOL ENDS SHEARED. RUDDER PRESSURE REGULATOR REPLACED IAW MM 27-20-38. FUNCTION AND LEAK CHECKS COMPLETED WITH NO FAULTS FOUND. PARTS SENT OUT FOR INSPECTION AND REPAIR.