Dixie 25D-TWIN-AL, Operator'S Manual, Page: 3 / 11

2
BASE PLATE PRESSURE ADJUSTMENTS
Proper base plate pressure is required to produce essential
body hooks and prevent slipping of cans during the seaming
cycle.
Each base plate has an adjusting screw (57) and set screw
(56) in its stem for making minute base plate adjustments as
follows:
1. Lift base plate out of Air Lift Shaft (805-1) or Height
Spacer and inspect the metal discs (46). If there is any
sign of undue wear or breakage of the metal discs, they
must be replaced. NOTE: If height spacers are used to
stabilize base plates for short cans, both the Height
Spacers and the Air Lift Shafts (805-1) will have 46
Metal Discs and 59 Retainer Springs.
Observe and note the original placement of the lock nut
on the threaded end of the air lift shaft before disassem-
bly. You will need to reference the original setting when
reinstalling. In order to replace the metal discs in the air
lift shaft (805-1), loosen the 5/16" lock nut, completely
unscrew the shaft and lift it out through the plunger
housing (30). Remove the retainer spring (59) from the
opening in the air lift shaft then tap the shaft against a
padded surface to dislodge the metal discs. To remove
the metal discs from a height spacer, lift it out of the air
lift shaft, remove the retainer spring and tap the height
spacer against a padded surface to dislodge the metal
discs. Replace with new discs and reassemble, making
certain that the retainer spring and metal discs are
properly seated and that the entire assembly is adequately
lubricated (oiled).
2. Insert screwdriver into hole in tope of base plate and
remove the set screw (56) by turning counterclockwise.
3. Insert screwdriver into same hole and turn adjusting
screw (57) in the proper direction to lengthen or shorten
effective height of the base plate, as may be required for
proper tension (pressure).
4. Replace set screw and tighten snugly. It may be neces-
sary to hold the end of the adjusting screw firmly while
tightening the set screw.
5. Make certain that the base plate assemblies are properly
lubricated and replace the base plates in the plunger
housings or height spacers.
If further base plate pressure adjustment is needed, incre-
mental adjustments may be made to the air lift system as
follows:
Loosen the 5/16" lock nut with a 1/2" open-end wrench; then
use a 5/8" open end wrench to turn the air lift shaft (805-1).
Adjust upward to increase base pressure, downward to
reduce base pressure. Use a 1/2" open end wrench to tighten
the lock nut against the shaft of the air lift assembly (803).
Note: Excessive base plate pressure may cause the plunger
of the air lift assembly (803) to fail to extend to its locked
position causing inconsistent lift. If the air lift operates
erratically and cans are not raised and lowered properly
although correct air pressure is maintained, a lessening of
base plate pressure may be required. Refer to the following
section on Air Filter/Regulator Adjustment for more infor-
mation.