B737 MAX 9
Maintenance Powerplant; Maintenance Airframe
Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural FAR
General Maintenance Action; General Flight Cancelled / Delayed
Procedure; Aircraft; Human Factors
I completed my service check with all tires at normal press. at around XA00.  Sometime around XA42 when the aircraft was released; The Pilot thought the #1 MLG tire press. looked low. upon checking the tire press. It was found to be 8 PSI below normal at 217 PSI. The corrective measure is to re-inflate and check in 24 hours. The aircraft departed late because of this incident. This seems to be a common occurrence with the 737 MAX aircraft; on regular basis often requiring replacement of the tire and sometimes the opposite tire.
Technician working in a B737 MAX 9 reported that after completing his assigned service check; the pilot reported #1 MLG tire and wheel assembly appeared to be low pressure 3 hours later; causing a flight delay as the tire and wheel assembly were removed and replaced.