What was found
NR 4 ENGINE FIRE LIGHT ILLUMINATED. BLEW 1ST BOTTLE, LIGHT STILL ON, BLEW 2ND BOTTLE, LIGHT DID NOT EXTINGUISH FOR APPROXIMATELY 1 MINUTE. ABORTED TAKEOFF AT 95 KTS. NO VISIBLE INDICATION OF FIRE. INSPECTED BY FIRE DEPARTMENT. CREW DID NOT SWITCH LOOPS TO VERIFY FIRE INDICATION. MX REMOVED FDAMS CARD AND FORWARDED TO AVIONICS. MAINTENANCE CHANGED NR 4 FUEL MANIFOLD. WHILE CHANGING THE NR 4 FUEL MANIFOLD MAINTENANCE FOUND LOWER HALF OF FIRESHIELD CRACKED, AND BENT AT 6 O'CLOCK POSITION. INSTALLED FIRESHIELDS P/N 2-163-412-05, S/N 992463707662.