Toro Reelmaster 2000-D Service Manual page 107

Hydraulic Manifold Service
1. Make sure the manifold is thoroughly cleaned before
removing any cartridge valve.
2. If solenoid cartridge valve is being serviced, remove
nut securing solenoid coil to the cartridge valve. Careful-
ly slide solenoid coil off the valve.
3. If flow control cartridge valve is being serviced, re-
move rotary handle from valve stem (Fig. 46.2):
A. Loosen two (2) set screws that secure handle
cap.
B. Remove screw and then lift handle cap from
valve.
C. Locate and retrieve detent pin, compression
spring, bushing and lip seal. The sleeve bearing
should stay in the cap.
D. Loosen two (2) set screws that secure handle
base to flow control valve and remove base.
CAUTION
Before opening hydraulic system, operate all hy-
draulic controls to relieve system pressure and
avoid injury from pressurized hydraulic oil. See
Relieving Hydraulic System Pressure in the Gen-
eral Information section of this chapter.
IMPORTANT: Use care when removing cartridge
valves. Slight bending or distortion of the stem tube
can cause binding and malfunction. Make sure that
deep well socket fully engages the valve base.
4. Using a deep well socket, remove cartridge valve
from manifold. Note correct location of O--rings, sealing
rings and backup rings. Remove and discard seal kit
from valve.
IMPORTANT: Before removing mow/backlap spool
from mow manifold, remove backlap switch, dowel
pin and ball.
5. If necessary, remove mow/backlap spool from mow
manifold:
A. Remove backlap switch from mow manifold be-
fore removing mow/backlap spool. Remove dowel
pin and ball from manifold port after switch is re-
moved. Remove and discard O--ring from switch.
B. Remove lower retaining ring from mow/backlap
spool. Raise mow/backlap spool to allow access to
retaining ring on upper end of spool. Remove upper
retaining ring.
Reelmaster 2000--D
C. Push spool down until O--ring and back--up ring
are exposed on bottom of mow manifold. Remove
lower O--ring and back--up ring from spool.
D. Pull spool up and out of mow manifold. Remove
O--rings and back--up ring from spool.
E. Discard removed O--rings and back--up rings.
8
6
10
4
3
7
1. Handle base
2. Handle cap
3. Detent pin
4. Compression spring
5. Bushing
6. Set screw (2 used)
6. Visually inspect the manifold port for damage to the
sealing surfaces, damaged threads and contamination.
7. Visually inspect cartridge valve for damaged sealing
surfaces and contamination.
A. Contamination may cause valves to stick or hang
up. Contamination can become lodged in small valve
orifices or seal areas causing valve malfunction.
B. If valve sealing surfaces appear pitted or dam-
aged, the hydraulic system may be overheating or
there may be water in the system.
Use eye protection such as goggles when using
compressed air for cartridge valve cleaning.
63.2 Rev. A
Page 4 - -
2
9
5
1
Figure 46.2
7. Set screw (2 used)
8. Screw
9. Lip seal
10. Sleeve bearing
11. Flow control valve
CAUTION
Hydraulic System
11