Control Valve No. 1 Spool Detent Replacement - Toro GREENSMASTER 3100 Service Manual

Control Valve No. 1 Spool Detent Replacement (Fig. 28, 29)
NOTE: These procedures can be done with the control
valve assembly installed on the machine.
1. Remove the entire detent assembly from the control
valve. Keep the backup washer, seal retainer and seal
with the spool.
2. Apply Locktite 222 or equivalent to threads of detent
stud (Item 9) and assemble into spring and stop collars
(Items 6 and 8). Thread the assembly into the No. 1
spool. The spring (Item 6) needs to be compressed to
get detent stud started. Anchor the slotted end of the
spool and apply 10-14 ft-lb (13.6-19 Nm) torque to
detent stud (Item 9).
3. Slip bonnet (Item 1) over the entire assembly and
secure it to the valve body with the two capscrews. Be
sure slot in mounting face of bonnet is at bottom before
installation.
4. Install the thrust plate (Item 5) into the bonnet (Item 1)
so it bottoms out. Apply approximately 1/4 in. (6 mm) of
#2 multi-purpose Lithium-base grease on top of thick
washer (Item 5).
5. Install twelve balls (Item 4) into thrust plate (Item 5).
IMPORTANT: If the detent bonnet contains a vent
pocket, do not let the balls fall into the vent.
6. Insert race (Item 3) on top of balls with ramp of race
facing inward as shown. Rotate race (Item 3) until you
are sure all balls are resting properly against the sur-
faces of the race and thrust plate (Items 3 and 5).
7. Insert spring (Item 2) into bonnet (Item 1).
8. Apply Locktite 222 or equivalent to the threads of
adjustment cap (Item 10) and thread into bonnet. Turn
adjustment cap in to compress the spring (Item 2).
Actuate the spool assembly, then turn the adjustment
cap until the desired detent action is obtained. This will
usually be within three turns from bottoming out the
adjustment cap..
NOTE: Each turn of adjustment cap (Item 10) changes
the "Feel" of the detent action about 20%.
Repairs
1. Bonnet
2. Spring
3. Race
4. Ball
5. Thrust plate
Page 4 - 48
Figure 28
6. Spring
7. Capscrew
8. Stop collars
9. Detent stud
10. Adjustment cap
Figure 29
Greensmaster
®
3100