What was found
HYD 2 LO PRESSURE APPEARED ON EICAS FOLLOWED BY SPOILER FAULT, LANDING GEAR NO DISPATCH, AND HAD TO PERFORM MANUAL LANDING GEAR EXTENSION AND HAD NO RUDDER CONTROL ON THE GROUND, NOSEWHEEL STEERING, AND NO ENGINE 1 REVERSE THRUST. EMERGENCY DECLARED. R & R HYD 2 SYS FILTER MANIFOLD PER AMM 29-11-04. NO LEAK. NO DEFECT NOTED. OKAY FOR SERVICE. PERFORMED OPS CHECK OF LANDING GEAR EXTENSION AND RETRACTION SYSTEM PER ERJ AMM 32-33-00 OPS CHECK GOOD. TROUBLESHOOT SPOILER FAULT PER FIM TASK 27-03-00-810-85G-A SUB TASK 810-660-A. FOUND TO BE TRANSITORY CONDITION. OKAY FOR SERVICE. PERFORMED INBD BRAKE CHK DUE TO HYD 2 LO PER AMM 32-44-00 AND DID TAXI CHK. NO DEFECT NOTED. OKAY FOR SERVICE.