Toro Groundsmaster 300 Series Service Manual page 243

Disassembly of Steering Valve
1. To avoid distorting or damaging the steering valve, do
not clamp it directly into a vise. Clamp a service assem-
bly fixture securely in a vise (Fig. 25). Put the steering
valve, input shaft first, into the service assembly fixture.
Attache the steering valve to the fixture with four (4)
5/16-24 UNF nuts (Fig. 26).
NOTE: Before beginning the disassembly of the steer-
ing valve, study the relative positions of the alignment
grooves on the side of the components in the assembly.
The relative alignment groove positions on the compo-
nents must be maintained at reassembly (Fig. 24).
2. Use a slot type screwdriver or screwdriver socket to
loosen the plug assembly one turn counterclockwise.
(Fig. 27). Do not remove the plug assembly.
3. Remove the four nuts from the port cover assembly.
Be careful not to damage the ports (Fig. 28).
IMPORTANT: The nuts are a special self-locking
type. Do not substitute any other type.
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Groundsmaster 300 Series Page 8 - 23
Figure 25
Figure 26
Figure 27
Figure 28
Repairs