A B737-400 CAPT STEERED ACFT INTO POS FOR TKOF AND WHEN ALIGNING ACFT FOR TKOF NOSEWHEEL STAYED IN EXTREME L TURN.

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WE HAD A NORMAL PUSH AND BEGINNING TAXI TOWARD RWY. OUR FLT WAS CLRED ONTO 'RWY 19R POS AND HOLD' BY TWR. CAPT STEERED ACFT INTO POS FOR TKOF; BUT WHEN TRYING TO ALIGN ACFT WITH RWY; NOSEWHEEL STAYED IN THE EXTREME L POS. THE NOSEWHEEL WOULD NOT STRAIGHTEN FOR TKOF. IT STAYED L SO THAT ACFT WOULD ONLY TURN L. DESPITE ATTEMPTS TO STRAIGHTEN; NOSEWHEEL STAYED TO L AND WE WERE UNABLE TO TAKE OFF WHEN CLRED. WE NOTIFIED TWR THAT WE WERE UNABLE TO TAKE OFF DUE TO THE NOSEWHEEL STUCK IN THE L POS. ASKED OPS FOR A TUG TO TOW US CLR AS SOON AS POSSIBLE. BRIEFED EVERYONE CONCERNED. TOWED BACK TO GATE WITHOUT INCIDENT. ACFT JUST CAME OUT OF HVY 'C' CHK. ON INITIAL WALKAROUND NOTED HYD FLUID ON TAIL SECTION. MECHS INDICATED THAT IT WAS LEFT OVER FLUID FROM HVY CHK THAT SHOULD HAVE BEEN CLEANED OFF. CREATED A DELAY. STRANGE THAT AN ACFT JUST OUT OF 'C' CHK COULD HAVE SO MANY PROBS RIGHT AWAY. THERE WAS NOTHING THAT THE CREW COULD HAVE DONE DIFFERENTLY. ACFT BROKE DURING NORMAL PROCS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE AIRPLANE WAS JUST OUT OF A HVY CHK AND HAD NUMEROUS PROBS BEFORE THE FIRST FLT. HYD FLUID ALL OVER THE TAIL SECTION THAT HAD TO BE CHKED FOR LEAKS AND CLEANED UP. THE FLT APPEARED NORMAL UNTIL DEP WHEN THE NOSE GEAR WAS LOCKED IN A L TURN AND THE AIRPLANE HAD TO BE TOWED TO THE GATE. ON CHKING WITH MAINT IT WAS RPTED A STEERING CHK FOUND NO FAULT THEN A MORE INTENSIFIED CHK DISCOVERED DEBRIS IN THE NOSE STEERING COLLARS AND THESE WERE REPLACED.