Toro Groundsmaster 300 Series Service Manual page 247

18. Remove the two alignment pins that align the port
manifold, valve ring and isolation manifold (Fig. 38).
19. Remove the isolation manifold (four plates bonded
together) (Fig. 39).
20. Inspect the ground surfaces of the isolation mani-
fold. You should notice a "normal" polished pattern due
to the rotation of the valve plate, and on the opposite
side a "normal" polished pattern due to the action of the
commutator cover and commutator seal. The holes and
edges should be free of nicks. The manifold surfaces
should be free of nicks or scoring. If the manifold has
developed any of these conditions, it must be replaced.
21. Remove the two isolation manifold-metering ring
alignment pins (Fig. 40).
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Groundsmaster 300 Series Page 8 - 27
Figure 38
Figure 39
Figure 40
Repairs