Olympus OM-1 Repair Manual page 124

Checkup
With 8575 set at l/l - 1/8, when the Glever of the Governor is worked
upon completion of film advancement, the Ankle should not Pe engaged.
(For reference: Prior tg the shutter charging action
The boss on the Gear A
J presses
8612
| presses
A lever of the Governor (in case of l/l & 1/2)
or
S lever of the Governor (in case
df
1/4 & 1/8)
j
And just immediately prior to the shutter charging
action, engagement between the Ankle and the Gear
is released and the G lever gets in contact with the
tooth of the Gear B.
j
The shutter is released.
The Gear A is rotated and 8612 is sprung back
to the original position.
2) CA8580 lever rattling
Prior to film advancement, check the engagement between 8580 and
8609 by shaking vertically 8609. If such engagement is for less than
2/3 the thickness of 8609, adjust the room at the rivet of 8580 to be
within 0.3.