Spool Torque; Shutter Unit Installation Adjustment - Canon A-1 Repair Manual

2.1 Spool Torque
1. Spool Gear (CG9-0056-000) is installed from the bottom
of the body.
2. Align the ear of the spring with the groove in the
spool.
3.
Spool
Adj:
Torque: 165 - 190 gcm.
Change spool gear
(The plate spring is a part of the Spool Gear
unit (CG9-0056-000).
4. Alternate Spool Torque Check
Spool torque may be checked by wrapping a string
around the spool and checking the tension required to
turn the spool.
Spool Tens i on:
254 - 292 g. (Spool Dia : 13 mm)
Note: Take care , to use the correct tolerance for the
t y pe of test used .
•
~.~
Spool Gear (CG9-0056-000)
Fig. 2-1
2 . 2 Shutter Unit Installation Adjustment
1. Count Switch SW 4 ·OFF" position Adjustment
The count switch should go "OFF" at · L = 0.1 - 0.3 mm
from its position when the first curtain starts its
travel. (Fig. 2-2.)
Adjustment: Count Switch eccentric screw .
23