Great Plains Gauge Wheel-Spindle - Manual (Page 8)

Great Plains Mfg., Inc.
8 Dual Gauge Wheel/Spindle Update
195-080M 04/10/2009
Install New Spindle
About Bearing Seals
Refer to Figure 9 and Figure 10
The new bearing seals are supplied in two sizes:
816-012C SEAL 3.375 X 2.0 X.438 CR20125
816-138C SEAL DBL LIP 2.5 ID X 3.881 OD
The smaller diameter (inside) seals are installed into the
axle-cup weldments from the inside of the gauge wheel
weldment. The larger diameter (outside) seals are
installed from the outside.
Note that there are two different axle-cup weldments on
each gauge wheel:
a long hub, where the seal seats deeply, and
a short (shallow) hub.
These are reversed left-to-right on each side.
Bearing seals have distinct faces:
inner - toward sealed area (bearing)
outer - away from sealed area (bearing), and
The inner face has the seams of the shells. The
outer face has any printing on the housing. If the seal
has a visible taper at the outside diameter, the smaller
diameter side is the inside.
The seals and keyless hub must be installed in a specific
order, depending on the tools available. Using the sug-
gested tools, the order used in these instructions is:
a. bearing cups (if not left in place)
b. inside seal in deep hub .
c. keyless hub (not shown on this page)
d. inside seal in shallow hub
e. bearing cones (not shown on this page)
f. outside seals .
If using different tools, rehearse the sequence before
starting work.
IMPORTANT !
Seals are hollow metal structures and are somewhat
fragile. The are not intended to be in contact with the
bearings. When installing them, carefully align them
so they are concentric with the shaft hole. Apply
insertion force across the entire face, or at least
equally along the entire outside diameter (as close to
the shaft diameter as possible). See page 3 for tool
suggestions.
Figure 9
Seal Locations
29448
26
26
27 27
1 2
5 5
b d
f f
4 4 4 4 3 3
a a
26
27
1
2
3 5
4 5
3 6
4
26 1
Figure 10
Bearing Seals
29447
6
26
27
6
4
3
3
4
26 2
27