Toro Groundsmaster 3280-D Service Manual page 215

Disassembly the Lift Control Valve (continued)
Inspecting the Lift Control Valve
Assembling the Lift Control Valve
Groundsmaster ® 3280-D/3320
05138SL Rev B
5. Carefully remove O-rings (item 4 in
not to damage spool bore or O-ring cavities during O-ring removal.
6. Remove detent plug (item 16 in
7. Remove plug (item 9 in
from valve body.
8. Remove adapter plug (item 14 in
spring, and poppet from control valve body.
9. Remove lockout seat (item 22 in
body. Remove detent plunger.
g230844
1. Lift control valve
10. If control valve is equipped with counterbalance valve
valve from control valve if necessary. Counterbalance valve disassembly
is not recommended.
1. Inspect spool and spool bore for wear. If wear is excessive, replace lift
control valve assembly.
2. Inspect all springs and replace if damaged or broken.
3. Inspect detent plunger, detent ball, and poppet for wear. Replace as
necessary.
4. Inspect lockout seats for wear or damage. Replace as necessary.
5. Inspect control valve housing threads and O-ring sealing surfaces. Replace
as necessary.
6. Inspect threads and O-ring sealing surfaces on plugs. Replace as necessary.
Do not wipe parts with dry paper towels or rags. Lint may cause
damage to the hydraulic system.
Figure
Figure 104), O-ring, spring, and detent ball.
Figure 104) with O-ring, and lockout seat with O-ring
Figure 104) with O-ring, poppet stop,
Figure 104) with O-ring from control valve
Figure 105
2. Spool
IMPORTANT
Page 5–131
104) from spool bore. Take care
3. Counterbalance valve
(Figure 105), remove
Hydraulic System: Service and Repairs