Veeder-Root SERIES 7886 - Final Checks and Adjustments

Installation, Operation and Service Manual
Series 7886 High-Capacity & 7887 Meter Registers
#
E. FINAL CHECKS AND ADJUSTMENTS.
1. End Play Check: Check end play (back and forth motion)
of shafts and parts as follows:
a. For proper measurement, the meter register must be
installed in the TD-42383 mounting fixture, Figure 26,
to constrain the frame into the same position that, it is
when installed in the housing.
b. Secure the meter register to the fixture with two 1 ,'4-28
button-head bolts. See Figure 27.
c. Take end play measurements of each shaft. Add or
subtract washers as necessary to obtain correct end
play.
2. Input Drive Bevel Gear Engagement Adjustment.
a. Install the gear plate onto the fixture using the
appropriate hardware.
b. Remove the retaining ring behind the bevel gear and
add or subtract washers as required for proper mesh
between the bevel gear on the gear plate and the drive
bevel gear on the clutch shaft. The shaft end play must
be maintained as specified in Figure 28.
c. Replace the retaining ring after adjustment.
3. Clutch Lever Positioning Adjustment.
a. Rotate the reset gear until the clutch is fully disengaged.
b. Measure the clearances as shown in Figure 29.
c. If the dimensions cannot be obtained, add or remove
washers as required, or replace the clutch and shaft.
d. The amount of face engagement between the spur gear
on the input clutch and the first wheel should be 75% ±
20%.
4. Wheel Brake Adjustment.
a. Rotate reset gear to position cam as shown in Figure 30.
b. Measure clearance between brake and first wheel. If
clearance is not within the dimensions given, adjust
brake by loosening screw and moving brake into
position.
c. Remove the meter register from the fixture by removing
the two button-head screws. Remove the gear plate
from the fixture.
5. Gearing Adjustment for Totalizer. See Figure 31.
Loosen set screw on bottom bevel gear. Mesh the top bevel
gear tightly with the totalizer bevel gear. Press the register
clutch shaft toward the left side frame. Adjust the bottom
bevel gear such that it has 0.012 - 0.015 end play when
meshing with the clutch shaft bevel gear. Tighten set screw
and secure with a sealant (Loctite 222 or equivalent) to
prevent loosening.
6. Apply Anderol L-795 or equivalent grease on teeth of bevel
gears.
7. Backlash Compensating Mechanism Adjustment for
EEC UNITS ONLY.
While unit is running at 100-200 RPM, adjust screw so
that pawl is approximately in the middle of clip as shown
in Figure 32 (on Page 16). Oscillation of pawl is
permissible.
To check for proper operation, use a 1:1 gear plate and
operate register at 100-200 RPM. Stop counting, hold input
shaft of gear plate and reset register. Wheel should reset so
that some part of graduation at zero always aligns with
pointer.
Spur Gear-
*—0.005 inch min.
Lever
0.015 inch min.
Figure 29. Clutch Lever Adjustment.
First Wheel
Detent Cam
Small Dia.
Figure 30. Brake Adjustment.
Figure 31. Inside Left Side Plate of Meter Register.
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