Pentax ASAHI SPOTMATIC 23102 Service Manual page 22

(2) When fixing the mirror seat assembly (0-02009) to the mirror housing (02002), the "A" part of the hinge
cover (02011) as shown in the following diagram should not protrude or sink itself from the back of
(02002), namely, the "B" part as illustrated in diagram 29, as the shutter curtains may jam with the "A"
part. Adjust (02011) correctly with pliers, where required.
(3) When replacing the mirror seat assembly (0-02009) with a new one, check to see whether the mirror seat
(02009) is in a twisted condition when it is down. When found twisted, adjust to keep it in a proper
shape with your finger.
(4) The mirror seat rest (02043) constitutes a cam. It is adjusted to maintain 45° at all times when the mirror
seat is down as illustrated below. Do not loosen the screw of (02043).
(5) When replacing the mirror actuator lever (02110) or mirror actuator lever top assembly (0-02018) with
a new one, be sure to check that the mirror seat flips up satisfactorily and also that the extreme end of
the shutter curtain actuator lever (02020) is properly positioned.
First, rotate the hook plate (02014) counter-clockwise. Also rotate the lowest end of the mirror actuator
lever bottom (02019) counter-clockwise, and the mirror seat will start flipping up. At the instant the "A"
part of (02019) as illustrated in the following diagram is about to leave the mirror actuator lever spring
23102 Page 21