Introduction
The charging mechanism is very robust and rarely needs to be disassembled for repair. It is recorded here mostly for reference. Still, it is sometimes necessary in order to replace broken parts in the film advance such as the sprocket shaft or the take-up spool.
The pictures in this guide were taken with the mirror box removed from the camera, but it is not necessary for the disassembly. It can be done with the mirror box still in place.
What you need
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Remove one screw.
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Lift the release lever and bias spring from the post. Be careful as the spring positioning it is still under tension.
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Installation Notes: Pay attention to the location of the bias spring during reassembly.
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Work the plastic housing off of the left contact pin. The right contact pin will come off with the housing.
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If desired, the contact and wire can be fully removed from the camera. Soften the contact adhesive with isopropyl alcohol then gently peel away.
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Remove one shoulder screw.
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Remove two screws.
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Tilt the left side of the linkage up, then lift it away from the chassis.
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Installation Notes: Make sure that the tab on the advance lock lever sits forward (in camera) of this lever. When the mirror is charged, the lever should move rearward (in camera) allowing the advance lock to engage.
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Remove one screw.
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Lift out wind completion switch. Be careful not to deform the contact legs
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Remove one circlip.
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Lift the lever off the post.
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Remove the bias spring.
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Unhook coil spring from ratchet pawl.
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Remove one circlip.
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Lift off ratchet pawl and shim washer.
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Remove brass bushing.
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Lift off advance lever lock.
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Remove bias spring.
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Remove one screw.
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Lift out switch assembly.
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Remove isolator sheet.
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Keep a finger on top of the winding spring to hold it in place.
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Unhook the end of the winding spring from the retaining post.
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Remove one shim washer.
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Remove one screw.
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Remove one screw.
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Remove one slotted retaining post.
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Remove charging mechanism plate.
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Remove one plastic washer.
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To reassemble your device, follow these instructions in reverse order.
