Toro Reelmaster 5200-D Service Manual page 118

6. Reinstall relief valve cartridge:
A. Lubricate new O-ring and backup ring of seal kit
with clean hydraulic oil and install. The O-ring and
backup ring must be arranged properly on the car-
tridge valve for proper operation and sealing.
B. Thread relief valve cartridge carefully into the ap-
plicable port. The valve should go in easily without
binding. Torque valve to 30 to 35 ft-lb (41 to 47 N-m).
Rotary Cartridge Valves
1. Remove knob assembly:
A. Unscrew and remove knob. Remove both jam
nuts.
B. Slide off applicable indicator plate being careful
not to lose springs. Remove spring.
C. Loosen set screw and slide detent plate off the
applicable cartridge valve stem.
D. Remove applicable locating plate with pin from
the cartridge valve stem and manifold.
2. Make sure manifold is clean before removing the
cartridge valve. Remove the valve and seal kit.
3. Visually inspect port in the manifold for damage to
the sealing surfaces, damaged threads, and contamina-
tion.
4. Visually inspect cartridge valve for damaged sealing
surfaces and contamination.
A. Contamination may cause valves to stick or hang
up, it can become lodged in small valve orifices or
seal areas causing malfunction.
B. If sealing surfaces appear pitted or damaged, the
hydraulic system may be overheating or there may
be water in the system.
Use eye protection such as goggles when using
compressed air.
5. If necessary, clean cartridge valve using clean min-
eral spirits. Submerge valve in clean mineral spirits to
flush out contamination. Particles as fine as talcum pow-
der can affect the operation of high pressure hydraulic
valves. Use compressed air for cleaning.
Hydraulic System
CAUTION
6. Reinstall the cartridge valve:
A. Lubricate new O-ring and backup ring of seal kit
with clean hydraulic oil and install. The O-ring and
backup ring of seal kit must be arranged properly on
the cartridge valve for proper operation and sealing.
B. Thread valve carefully into the applicable port
(MD1 or FC1). The valve should go in easily without
binding. Torque valve from 30 to 35 ft-lb (41 to 47
N-m).
7. Reinstall knob assembly:
A. Install applicable locating plate so that the pin
seats into the locating hole.
B. Turn the threaded cartridge valve stem carefully
clockwise until it stops.
C. Face detent plate counterbore down. Thread det-
ent plate down onto the valve stem until it is stopped
by the locating plate. Turn detent plate back counter-
clockwise 1/4 turn.
D. Center one detent plate hole over a locating plate
indentation. Drop a ball into each hole, then drop a
spring into each hole.
E. On the 2-position directional valve cartridge,
place indicator plate over the detent plate. Make sure
the arrow points directly at the number 1 on the locat-
ing plate.
F. On flow control cartridge valve cartridge, place in-
dicator plate over the detent plate. Make sure the ar-
row points to the right at 45_ .
G. While pushing down on the indicator plate and
compressing the springs, thread down a jam nut.
While tightening the set screw, tighten jam nut at the
same time using a 7/16 - inch wrench
H. Thread second jam nut all the way down the valve
stem. Apply "Loctite 242" or equivalent the valve
stem threads. Screw knob all the way down until it
hits the upper jam nut.
I. On 2-position directional cartridge valve car-
tridge, turn knob counterclockwise so the arrow is
90_ with the back of the manifold. Simultaneously
tighten upper jam nut and turn knob so it is tight and
the arrow is pointing 45_ to the right in line with the
indicator plate.
J. On flow control valve cartridge, turn knob coun-
terclockwise until the arrow points at the number "5".
Simultaneously tighten upper jam nut and turn knob
so it is tight and the arrow is pointing at the number
"1" on the locating plate.
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