修理マニュアルによると…/Repair Manual said...
 
Pentaconsix Repair Manual (Ver.1971) wrote like below

Film-feed troubles

1:Insufficient film feed: overlapping images

Objectionable operation of the bevel gear-48.00.
Lever-54.00 has not been lifted by shutter release.
Bevel gear-48.00 does not return into its initial position.
Bevel gear-48.00 advances too much.
Tension spring-40.23 is too weak.
Leaf spring-40.08 is not swung out when opening the camera back.
Bevel gear-48.00 jams at bushing-45.01
Lever-54.00 engages only after the second film feed.
Bevel gear-48.00 “sticks” (degrease it with petrol).
Control gear-56.00 is insufficiently carried along by the measuring cylinder-17.00
Leaf spring-58.03 does not work.Lever-54.00 engages again.
Friction in the control gear 56.00 slips occasionally.
Film is not safely pressed against the measuring cylinder-17.00.
Coupling slips occasionally.
2:Excessive film feed: image intervals too wide

Bevel gear-48.00 does not feed or operates only occasionally..
Tension spring for Lever-54.00 too weak.
Leaf spring-40.08 does not mesh according to drawing.
Lever-54.00 does not engage the bushing.
Segment toothing-50.00 is damaged.
Too flat meshes between gears 0.21, 0.22, 0.23 and bevel gear-48.00
Friction in the control gear 56.00 slips, friction too weak.
Measuring cylinder-17.00 insufficiently taken along.
Lever-54.00 adheres to the spring-58.03.

※“0.21”, “0.22”, “0.23”, “48.00”, “40.23”, “40.08”, “50.00” , “54.00”, “56.00”, “58.03”, “17.00” are parts No.
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