Panasonic SA-AK310GC Service Manual page 37

Step 2 Lower the loading stopper ass'y, and then align the lower spindle with the trapezoid tooth of
relay gear A.
Step 3 Force the loading stopper ass'y, latch the claw firmly.
[Reassembly for mechanism base drive unit]
Step 1 Install the traverse cam gear.
Step 2 Rotate the traverse cam gear to the direction of arrow.
Step 3 Install the drive gear and traverse relay gear.
*When installing the traverse relay gear, align the trapezoid tooth of gear with tooth of traverse cam
gear.