Toro Reelmaster 5200-D Service Manual page 119

Logic Cartridge
1. Make sure the manifold is clean before removing log-
ic cartridge valve and seal kit. Remove cartridge valve.
2. Visually inspect the port in the manifold for damage
to the sealing surfaces, damaged threads, and contami-
nation.
3. Visually inspect logic 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.
Reelmaster 5200-D/5400-D
Use eye protection such as goggles when using
compressed air.
4. Clean logic cartridge valve using clean mineral spir-
its. Submerge valve in clean mineral spirits to flush out
contamination. Particles as fine as talcum powder can
affect the operation of high pressure hydraulic valves.
Use compressed air for cleaning.
5. Reinstall logic 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 must be arranged properly on the car-
tridge valve for proper operation and sealing.
B. Thread cartridge valve carefully into the port
(LC1). The valve should go in easily without binding.
Torque the valve 30 to 35 ft-lb (41 to 47 N-m).
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CAUTION
Hydraulic System