B737-900
Maintenance Powerplant; Maintenance Airframe
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural FAR
General Flight Cancelled / Delayed; General Maintenance Action
Aircraft; Procedure; Manuals; Incorrect / Not Installed / Unavailable Part
Aircraft in ZZZ required 2 nose wheel tire assembly replacements due to a crew write up. The write up stated that on takeoff roll; the nose wheel vibrated; 70 kts. through nose wheel retract. History on the nose gear assembly revealed that the right-hand nose tire was replaced in ZZZ1 due to wear.As a precaution; ZZZ technicians decided to replace both nose tires. IPC 32-45-21-05; item 001L; states that part #2607825-2 is effective for the aircraft. This part number was not available in ZZZ. Part number C20637000 was available. In the side notes of IPC 32-45-21-05; item 001L; it states in the 'miscellaneous data' section that part number C20637000 is effective for the aircraft. When technicians attempted to install the nose tire (C20637000); the tire assembly would not sit flush on the axle. This resulted in not enough axle thread to be exposed to properly install the main nut to secure the tire assembly. Several issues came about from this LOSA observation. First; the IPC states that C20637000 is effective for this aircraft. The tire assembly is not a proper fit. Second; the 'miscellaneous data' section in the IPC references that part number C20637000 is not interchangeable for P-8 aircrafts. What do they mean by P-8 aircraft? Third; if part number C20637000 is effective for this aircraft per the IPC; the tire assembly has 'MAX' stenciled on the sidewall of the tire. This could potentially cause confusion to the flight crews since [the] aircraft is a 737-900ER. Fourth; since the 737MAX aircraft are currently out of service; why are MAX tires being inventoried in the serviceable racks in the terminal areas?
Technician reported conflicting information in the IPC with regards to effectiveness of Nose Wheel assemblies authorized for installation on aircraft.