Panasonic SA-AK220E Service Manual page 25

Step 13 Remove the traverse relay gear, traverse cam gear
and drive gear.
[Dissassembly/reassembly for the spindle base unit]
Step 1 Draw the 5 disc spacers.
Step 2 Pushing the claw, slide the support plate in the direction
of arrow, and then remove it.
Step 3 Rotate the disc lever in the direction of arrow (1), draw
the disc lever.
NOTE:
Take care not to lose the disc lever spring.
Step 4 Release the 2 claws, and then draw the relay gear B.
Step 5 Release the 2 claws as shown below.
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SA-AK220E / SA-AK220EB