Fault Phenomenon: XCMG RP953 paver when starting, the starter motor spins but cannot engage the engine flywheel.

Troubleshooting Process:
– Checked one-way clutch: starter motor one-way clutch slipping.
– Checked gear: drive gear severely worn.
– Checked flywheel: flywheel ring gear missing teeth.
– Checked solenoid switch: insufficient fork travel.

Root Cause: The internal one-way clutch of the starter motor is worn and slipping, unable to transmit torque to the flywheel.

Required Parts: Replace starter motor one-way clutch or motor assembly.