What was found
DURING AFTER T/O CHECKLIST, WHEN LANDING GEAR IN OFF POSITION, RED NOSE GEAR ANNUNCIATOR ON. NOSE GEAR DOWN AND LOCKED. GEAR CAME BACK UP W/2ND UP LEVER. GROUNDED - YES. 20 CBS PULLED AND NOSE OF AIRCRAFT JACKED UP REF B737-800 AMM 07-11-21-580-801. PERFORMED B737-800 FIM 32-30 TASK 809 AND OPS TEST OF NLG REF AMM 32-33-00-710-801. OPS CHECK GOOD, NO DEFECTS NOTED. 20 CBS RESET. DISCONNECTED AND RECONNECTED LWR NLG WHEEL WELL DOOR RODS, NO ADJUSTMENTS MADE REF AMM 32-33-61.