As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GEAR RETRACTION HEARD A BANGING SOUND AS THE NOSE GEAR CAME UP. LG WOW SYS FAIL MASTER CAUTION FOLLOWED BY LANDING GEAR LEVER DISAGREE MASTER WARNING. DECLARED EMERGENCY AND DIVERTED TO EWR. SERVICED NOSE LANDING GEAR SHOCK STRUT IAW AMM 12-12-09. NO LEAKS OF FLUID NOTED.