What was found
ON TAKEOFF AT PHX EN ROUTE FOR BOS OVER TEMP OCCURRED ON THE NR 2 ENG, REJECTED T/O AT 100 KTS. MAINT COMPLIED WITH STEP 4C OF AMM FORCE CK OF VSV MECH, FORCE REQUIRED LESS THAN 350 INCH POUNDS. R & R NR 2 ENG MASTER BLEED VALVE ACT, OPERATIONAL CHECK WAS GOOD. VENDOR FUNCTIONAL CHECK OF MASTER BLEED VALVE ACT, GOOD, BUT RIG TEST REVEALED PISTON VELOCITIES WERE OUT OF LIMITS. UNIT WAS DISASSEMBLED & INLET FILTER, TORQUE MOTOR FILTERS, & CONTROL SERVO VALVE PISTON FOUND LACQUERED TO LEVEL 2. UNIT CLEANED, TESTED AND RE-CERTIFIED IAW CMM.