What was found
TAKEOFF ABORT AT 10 KTS. ROLL SPOILER EXTENDED NORMALLY PRIOR TAKEOFF. UPON ADANCING THROTTLES, COINCIDENT WITH SPOILER RETRACTION, THE NR 1 HYD ISO VALVE" AND " ROLL SPOILER INBD HYD" CAUTION LIGHTS MOMENTARLY ILLUMINATED AND THEN WENT OUT WHEN THROTTLES BROUGHT TO DISC. UPON TAXING CLEAR RUNWAY AND RETURING FLIGHT/TAXI TO "TAXI" THE SAME SEQUENCE OF CAUTION LIGHT ILLUMINATED OCCURED. ALSO, NOTICE LT INBD ROLL SPOILER LAGGING OTHER SIGNIFICANTLY ON PFCS. PRESSURIZED & OPERATED NR 1 HYD SYS IAW AMM 29-00-00-863-801. NO CAUTION LIGHTS APPEARED. OPS CHECK THE ROLL SPOILER SYS IAW AMM 27-61-00-710-801. OPS CHK GOOD. AS PRECAUTION R & R NR 1 HYD ISOLATION VALVE IAW AMM 29-11-11-000-801 & 29-11-11-400-801, STEP 1-3 & 4 B 1-9. COMPLETED THE REMAINING STEPS OF THE AMM TASK 29-11-11-400-801. NO LEAKS NOTED. OPS TEST GOOD. PANELS 262AT AND 263CL ARE RE-INSTALLED AND SEALANT APPLICATION APPLIED. COULD NOT DUPLICATE. NO PARTS REPLACED.