Great Plains 3PYPA Operator Manual - Manual (Page 109)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 105
03/20/2012 Table of Contents Index 401-647M
Meter Brush Replacement
Consult the Parts manual (401-647P) for current replace-
ment part numbers.
Refer to Figure 128
Tufted Brush Replacement
1.
Remove and save both 10-24 hex head cap
screws
and nylock nuts (not shown).
2. Remove the tufted brush assembly , and replace
with new assembly.
3. Re-insert the 10-24 screws, and re-start the nylock
nuts. Carefully tighten each nut just until plate has no
play under the screw heads.
4. Add a half turn to the nuts. Do not tighten fasteners
to normal 10-24 torque, or the plate may fracture.
Strip Brush Replacement
Note: Do not loosen or remove any of the three
5 ⁄
16
-18
cap screws retaining the brush holder.
1. Insert the flat blade of a large screwdriver into the
slots of the brush holder snaps
. Turn each snap
clockwise to release brush holder .
2. Prepare to catch drop brush (which will fall lose).
Slide brush holder left and up to free front edge from
under washer
. Remove brush holder.
3. Remove used strip brushes from the holder by slid-
ing them downward out of the grooves.
Refer to Figure 129
4.
Insert replacement strip brushes into grooves at
holder bottom so that notched ends
are at the
bottom.
Refer to Figure 128
5.
Check strip brush positioning with a trial re-insertion
of the brush holder. The ends of the long brush must
fit snugly into meter housing grooves at top
and
lower rear . The bottom end of the short brush
must fit snugly in the lower front housing groove .
If any significant force is require to re-seat the brush
holder, a strip brush is likely too high or too low.
6. Relax the position of the brush holder, re-position the
drop brush (see below), and re-seat the brush
holder.
7. Starting with the bottom snap, swing snaps back
into engagement.
13
14
16
11
13
17
19
12 15
Null4:
Figure 128
Brush Replacement
29719
21
20
11
12
15
13
14
Null4:
Figure 129
Strip Brush Notches
29720
18
18
16
17
18
19
20
20
13