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Figure 4-37. Carnage CB and CB Cam
Carriage
Circuit Breaker
Cam
h.
Adjust the carriage CB cam
(if
necessary)
to obtain the correct pulse width.
4.
Check that the CB does not break before the
brushes break. This timing should result in a
CB duration of approximately 8 ms.
5.
Remove ground installed
in
step 3c.
4. 7. 22 Vernier Removal
1.
Remove the locking screw which covers the
setscrew in the platen knob (Figure 4-38).
2.
Loosen the setscrew and remove the knob.
3.
Revolve the vernier knob until the hole in the
platen bevel gear assembly is in line with the
hole in the vernier pinion housing. Place the
punch through the holes and remove the plastic
knob by turning it counterclockwise.
4.
Loosen the socket screws in the vernier pinion
collar, then slide the vernier pinion housing off
the platen shaft.
4. 7. 23 Vernier Adjustment
Position the vernier collar for maximum spring
tension and keep the collar setscrews tight so that
the vernier bevel gears are held in full mesh with
the platen bevel gear assembly.
4. 8 TOP COVER TORSION ROD ADJUSTMENT
Objective: To adjust the two torsion rods so that the
top cover will go from a closed (latched) position to
50° (from the horizontal) and remain at 50° without
being held.
NOTE: Dash pot must be installed when making these
adjustments.
4-22
(4/67)
Platen Bevel
Gear Assembly
Vernier Pinion Knob
~
I
Vernier Pinion Collar
Platen Knob
Figure 4-38. Carnage Vernier
1.
Open top cover as far as it will go.
2.
Loosen the U-clamps (one set at each side of
cover) holding the torsion rod retainers.
3.
I
Danger
Do not allow cover to fall.
NOTE: The 1/4" square ratchet adapter tool
(p/n 451132) fits the retainer for the following
adjustment.
Insert tool into retainer and apply enough torque
(CCW from the right side or CW from the left)
to rotate each retainer about 10° to 15°. Tighten
U-clamps.
Caution
Do not overtighten cover screws (cover metal
strips easily).
4.
Close (latch) cover and then unlatch cover, allow-
ing cover to swing upward.
5.
Check that cover rises to 50° (+20°; -10°) with-
out being held.
6.
Check that cover will remain fully open without
being held.
7.
Check that the torque on each side is approxi-
mately equal.
8.
Vary torque applied in step 3 to meet checks,
if
necessary.
SECTION 2. FEATURES
(Not applicable - none available as of November 1966).
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