What was found
AFTER PUSHBACK DURING TAXI & ENGINE START WE HAD A RUDDER RATIO EICAS MSG WITH DISCREAT LIGHT/A/C RETURNED TO THE GATE (BTB) AND MTX GROUNDED A/C MTX TROUBLESHOT AND T/S AS PER FIM 27-09 FT 814 PCA FAULT IN VIEW ON BOTH RRCM AFTER L AND R ENG START. REMOVED AND REPLACED LT HYD SYSTEM CENTER RUDDER PCA ASSY PER REF B767 AMM 27-21-02. PERFORMED LT PCA ADJUSTMENT AND RUDDER PCA TEST PER REF AMM 27-21-00, 27-21-02, LEAK TEST, NO LEAK NOTED RII 27-24-1 C/W. LP 39074-60 ITEM 2