What was found
FLIGHT 2115, BOS-LGA - LANDING GEAR WEIGHT ON WHEEL SYSTEM FAIL EICAS MESSAGE AND THE LANDING GEAR WOULD NOT RETRACT. THE FLIGHT RETURNED TO BOSTON, NO EMERGENCY WAS DECLARED. THE FLIGHT LANDED WITHOUT INCIDENT. MAINTENANCE SERVICED THE NOSE LANDING GEAR STRUT, ACCOMPLISHED AIRCRAFT JACKING AND LOWERING. A LANDING GEAR EXTENSION AND RETRACTION ADJUSTMENT WERE ALSO ACCOMPLISHED. ALL CHECKS WERE SATISFACTORY.