Hydraulic Manifold Service - Toro Reelmaster 2000-D Service Manual

Hydraulic Manifold Service

1. Make sure the manifold is clean before removing the
cartridge valve.
2. If solenoid cartridge is being serviced, remove nut
securing solenoid to the cartridge valve. Carefully slide
solenoid off the valve.
3. If reel speed control cartridge valve or backlap car-
tridge valve is being serviced, remove knob assembly:
A. Unscrew and remove knob. Remove both jam
nuts.
B. Slide off indicator plate being careful not to lose
springs or balls. Remove both springs and balls from
detent plate.
C. Loosen set screw and slide detent plate from the
spool valve stem.
D. Remove locating plate with pin from spool valve.
IMPORTANT: Use care when handling the cartridge
valve. Slight bending or distortion of the stem tube
can cause binding and malfunction.
4. Remove cartridge valve with a deep socket wrench.
Note correct location for o–rings, sealing rings, and
backup rings. Remove and discard seal kit.
5. Visually inspect the manifold port for damage to the
sealing surfaces, damaged threads, and contamination.
6. 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 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.
CAUTION
Use eye protection such as goggles when using
compressed air.
7. Clean cartridge valve using clean mineral spirits.
Submerge valve in clean mineral spirits to flush out con-
tamination. Particles as fine as talcum powder can affect
the operation of high pressure hydraulic valves. If car-
tridge design allows, use a wood or plastic probe to push
the internal spool in and out 20 to 30 times to flush out
contamination. Be extremely careful not to damage car-
tridge. Use compressed air for cleaning.
Reelmaster 2000–D
8. Reinstall the cartridge valve:
A. Lubricate new seal kit components with clean hy-
draulic oil and install on valve. The o–rings, sealing
rings, and backup rings must be arranged properly
on the cartridge valve for proper operation and seal-
ing.
IMPORTANT: Use care when handling the valve
cartridge. Slight bending or distortion of the
stem tube can cause binding and malfunction.
B. Thread cartridge valve carefully into correct man-
ifold port. The valve should go in easily without bind-
ing.
C. Torque cartridge valve using a deep socket to 35
ft–lb (47 N–m).
9. If solenoid cartridge was removed: carefully install
solenoid coil to the cartridge valve making sure that seal
is placed on both sides of the coil. Apply medium
strength thread–locking compound to the threads of the
valve. Torque nut to 15 in–lb (1.7 N–m).
10.If reel speed control cartridge valve or backlap car-
tridge valve was removed: reinstall knob assembly to
cartridge stem.
A. Install locating plate so that the pin seats into the
locating hole.
B. Turn the threaded spool valve stem carefully
clockwise until it stops.
C. Place detent plate counterbore down and thread
detent plate down onto the valve stem until it is
stopped by the locating plate. Turn detent plate back
counterclockwise 1/4 turn.
D. Center one detent plate hole over a locating plate
indentation. Drop a ball into each hole and then drop
a spring into each hole.
E. Place indicator plate over the detent plate:
On backlap valve, make sure the arrow points to
the right at 45
On reel speed control valve, make sure the arrow
points directly at the number 1 on the locating
plate.
F. While pushing down on the indicator plate and
compressing the springs, install a jam nut onto the
valve stem. While tightening the set screw, tighten
jam nut at the same time using a 7/16" wrench.
G. Thread second jam nut all the way down the valve
stem. Apply medium strength thread–locking com-
pound to the valve stem threads. Screw knob all the
way down until it contacts the upper jam nut.
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Hydraulic System