What was found
AFTER TAKEOFF, RETRACTED MLG AND BOTH MLG RETRACTED NORMALLY. RED "UNLOCK" COCKPIT ANNUCIATOR REMAINED ILLUMINATED FOR ABOUT 10 -12 SECONDS. NLG RETRACTED NORMALLY AFTER 5 OR 6 CYCLES OF BANGING / VIBRATIONS IN NOSE WHEEL WELL AREA. MLG LATER EXTENDED NORMALLY WITH 3 GEAR INDICATIONS. JACKED ACFT & CYCLED MLG WOULD NOT RETRACT UNITL CONTROL HANDLE WIGGLED BACK & FORTH. ALSO NOTED NLG DID NOT LOCK UP FOR A LONG TIME. FOUND NLG UPLOCK SWITCH OUT OF ADJUSTMENT. ADJUSTED NLG UPLOCK SWITCH IAW MM 32-60-00. R & R MLG CONTROL UNIT IAW MM CH 32-40-10. PERFORMED GEAR SWINGS & OPS CHECK OF MLG CONTROL UNIT. ALL TESTS PASS. LANDING GEAR EXTENSION & RETRACTION OPS CHECKS NORMAL.