Canon NEW F-1 Service Manual page 59

4. VR AOAC (VR9) Wiper Adjustment
4.1 In the relaxed position (AVO=5.6) the pin height* should be 5.7 ± 0.05mm.
*: Pin height is repair jargon. In the case of lenses, it is correct, since the pin
protrusion above the standard mount surface if measured. In the body, the
opposite is true. The pin height is a measure of how much the pin is recessed
below the mount standard surface.
4.2 Set the max. aperture pin to the f/2.8 height. Check that the AVO and AVC
brushes are on the proper pattern (A loupe will probably be necessary). Adjust
with eccentric A.
4.3 Check the brush position also at AVO S f/1.2 and f/5.6.
5. Sector Gear Return Position Adjustment
Adjust eccentric (B) so that a line through the axes of the sector gear and
coupler (line "b") bisects the second tooth of the sector gear.
6. R AV Wiper Position Adjustment
6.1 Stop down the tool-standard lens 4 AV (f/5.6) and adjust so the inner edge of the
wiper (Fig. 3) is on the AV=4 position of the AV resistor board (Fig. 2). The
adjustment is made by loosening the viper mounting screw and repositioning the
wiper.
Canon NEW F-1 Service manual
Assembly and Adjustment Notes
Page 59