Toro Groundsmaster 300 Series Service Manual page 268

37. To install the valve plate correctly, first carefully study
Figures 93 and 94 for positioning of the valve plate
spring slots and other cavities in relation to the spring
and spring recesses on the isolation manifold. Be sure
to use the alignment grooves on the side of the isolation
manifold for orientation.
Put the valve plate with the surface that reads "shaft
side" down over the hex drive assembly. Align the three
spring slots centrally over the three springs installed in
the spring recesses of the isolation manifold. The valve
plate spring slot with the small cavity and the words "port
side" centrally below it (Fig. 100), must be placed over
the spring and spring recess in the isolation manifold at
the top (12 o'clock position) as shown (Fig. 100 and
101). Adjust the valve plate position radially to centralize
the spring slots over the springs and the spring recesses
in the isolation manifold.
IMPORTANT: The unit will not function if the valve
plate is not positioned on the isolation manifold
exactly as shown in Figure 101. If the valve plate
spring slots, isolation manifold spring recesses and
springs are not centrally aligned in this step, the
springs could be damaged when the port manifold
is installed onto the assembly.
38. Apply clean multi-purpose grease to the valve ring
seal ring. Install the seal ring in the valve ring (Fig. 102).
Repairs Page 8 - 48
Figure 100
Figure 101
Figure 102
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Groundsmaster 300 Series