Restoring the Anniversary

 2

Tension Setting Plate  

a.    The tension dog spring D may be replaced without removal of the plate.

b.    If the entire plate is to be removed, use the special tension lock nut wrench and pliers to remove the tension snail lock nut A The tension snail B may now be removed from the tension roller-shaft- it may be necessary to wind the tension to “6”before the tension snail can be unscrewed. At this point the four #1 x 1./4 “oval head screws are removed and the plate lifted from the camera body.  

 A pair of tweezers can be used as the Tension Lock Nut Wrench.

If the tension snail lock nut can not be turned. I'm afraid you'll have to make a pipe with two fitting notches. 

c.     Lubricate the case and plate before bearing points of the tension roller shaft with graphic grease; and, lubricate the internal tension spring with a few drops of light oil inserted through the left end (see page 3)

d.    Reassemble the tension setting plate over the threaded end of the shaft and lock the tension setting clamp to the shaft. Check side play of the roller and if more than 1/64”use spacer washer at the case bearing end of the shaft. Wind the spring several turns and then turn the curtain out by hand several times to remove curtain slack. Slowly release the tension- do not allow the tension setting clamp to spin free. Lift the tension plate; set the indicator gear so that “1”appears in the indicator hole; turn the one tooth of the pinion clockwise from the vertical about 30 degrees and now engage the counter gear and the one tooth pinion. If it is not possible to wind the tension “ 2” the pinion and gear are not properly engaged- repeat and vary the 30 degree suggestion slightly.  

Home made Tension Setting Clamp made out of a aluminum pipe 

e.    With the tension setting clamp, wind the tension to “ 6” ; hold the tension ; lift the plate and reset the counter to “ 1” . Check for correct mesh of pinion and indicator gear-then assemble two screws. Remove the tension setting clamp and rethread the tension snail to the shaft. Screw the snail down until it binds on the plate – then, back off a partial turn until the dog and the snail catches engage. Insert spacer (.005”to ,010” ) between the catches, assemble the tension nut and back off snail a full turn, tighten lock nut again and check. Test run several at high and low tension – one turn at the time until the shutter operates inverted. This additional tension may be added by removing the plate mounting screws and rotating the plate counter clockwise without disengaging the pinion and indicator gear. Check operation as instructed in paragraph 1g. Reassemble the four screws when tension is satisfactory.

 Page 1: Focal plane shutter adjusting