dial, you always get an accurate indication
— even though you may shoot double ex
posures. The double-exposure feature in
the XD-11 just disengages the advance
pawl, Fig. 121, from the main wind gear.
Fig. 122, when you push down the rewind
button. Pushing down the rewind button
moves the long end of the rewind-button
latch, Fig. 122, against the advance pawl.
The timing we mentioned refers to the
position of the notch in the counter ac
tuator, Fig. 124. W e'll describe the proper
timing during reassembly. Although you
can remove the counter-advance assem
bly as a unit, it's easier to retime the
counter actuator if you remove the back-
sensing lever, Fig. 124. Disconnect and
remove the spring on top of the back-
sensing lever; notice that the short end of
the spring connects to the snap ring
which holds the back-sensing lever in
place. Now remove the snap ring and the
spring. Lift out the back-sensing lever
together w ith the counter actuator.
Also lift out the tw o plastic gears on
top of the base plate, Fig. 124. The
smaller gear has a slot which fits over the
flat sides of the sprocket rod. Remove the
base plate by taking out the cross-point
screw.
Three parts inside the sprocket are now
loose — the compression spring and tw o
brass washers. You can remove these
parts more easily after you take out the
sprocket. Remove the screw holding the
lower sprocket bearing at the bottom of
the body casting. Then lift out the
sprocket from the back of the camera.
REPLACING THE SPROCKET
One end of the sprocket has slots to
receive the pin through the sprocket
shaft. Seat the sprocket w ith the slotted
end down. Then replace the sprocket
shaft and the lower sprocket bearing.
Now, from the top of the body, place
one of the brass washers over the top of
the sprocket rod. Seat the compression
spring next. Finally, place the second
brass washer on top of the compression
spring.
Replace the base plate, Fig. 124. You'll
notice that the base plate has a sliding ad
justment; by loosening the cross-point
screw, you can shift the base plate in
position. The sliding adjustment permits
you to adjust the engagement of the
counter actuator w ith the counter-dial
gear. You can make the adjustment after
you replace the counter dial.
Now, as you replace the back-sensing
lever, you can time the counter actuator.
Fig. 125 shows the proper position of the
notch. Seat the tw o plastic gears on the
base plate. Then insert the counter ac
tuator into the hole in the back-sensing
lever. Rotate the counter actuator to the
position shown in Fig. 125 and mount the
back-sensing lever on the base plate.
Check the position of the counter ac
tuator before you replace the snap ring. If
the notch isn't in the proper position, lift
the back-sensing lever high enough to
disengage the counter actuator. Then
turn the counter actuator to the position
shown in Fig. 125.
Then replace the spring for the back-
sensing lever. Also replace the snap ring
and connect the short end of the spring
as shown in Fig. 124. Check the assembly
by rotating the sprocket; the counter ac
tuator should turn freely.
Figure 125
SPROCKET TIM IN G
Proper sprocket timing assures that the
spaces between film frames also fall be
tween perforation holes. Most customers
w ould never notice an error in the
sprocket timing. However, some types of
slide mounts depend on proper film
registration; pins on the slide mounts fit
through the perforation holes to hold the
film.
To check the sprocket timing before
disassembly, just rotate the sprocket
toward the rewind side to take up the
backlash. The sprocket teeth should then
be positioned as shown in Fig. 126. Or, if
you're not sure of the proper sprocket
position, load a roll of test film. Then hold
open the shutter on bulb. Using a pencil,
trace around the edge of the focal-plane
aperture to draw the frame position on
the film. You now have a picture of the
frame position on your test roll. The film
drawing in Fig. 126 shows where the
frame should be in relation to the perfora
tion holes.
You can time the sprocket after you
remove the winding-base plate. So,
before you replace the winding-base
plate, rotate the sprocket to the properly
timed position, Fig. 126. Remember to
take up the backlash by rotating the
sprocket toward the rewind side of the
camera.
REPLACING AND TIM IN G THE
WINDING-BASE PLATE
There's one precaution as you seat the
take-up spool - make sure the sensing
lever fo r the film-advance indicator is
against the fro n t of the body casting. The
sensing lever must ride between the take-
up spool and the fro n t of the camera.
Then replace the take-up-spool gear and
the sprocket gear at the bottom of the
body casting.
Now locate the punch marks on the top
surfaces of the main wind gear and the
second gear, Fig. 127. Before you seat
Figure 126 Sprocket position as seen from bottom o f camera
Proper film registration
