Relieving Hydraulic System Pressure; Traction Circuit Component Failure; General Precautions For Removing And Installing Hydraulic System Components - Toro GreensPro 1200 Service Manual

Relieving Hydraulic System Pressure

Before disconnecting or performing any work on the
GreensPro 1200 hydraulic system, all pressure in the
hydraulic system must be relieved. Park machine on a
level surface. Make sure engine is OFF.

Traction Circuit Component Failure

The GreensPro 1200 traction circuit includes the
transmission, oil tank, and oil filter. If a component in
the traction circuit should fail, debris and contamination
from the failed component will circulate throughout the
traction circuit. This contamination can damage other
components in the circuit, so the contamination must
be removed to prevent additional component failure.

General Precautions for Removing and Installing Hydraulic System Components

Before Repair or Replacement of Components
1. Before removing any parts from the hydraulic
system, park machine on a level surface, make sure
the engine is OFF, and remove the spark plug wire from
the spark plug.
2. Clean machine before disconnecting, removing, or
disassembling any hydraulic components. Make sure
hydraulic components, hoses, connections, and fittings
are cleaned thoroughly. Always keep in mind the need
for cleanliness when working on hydraulic equipment.
WARNING
Before disconnecting or performing any work
on hydraulic system, all pressure in the system
must be relieved. See Relieving Hydraulic
System Pressure in the General Information
section.
3. Put caps or plugs on any hydraulic lines, hydraulic
fittings, and components left open or exposed, to
prevent contamination.
4. Put labels on disconnected hydraulic lines and
hoses for proper installation
completed.
5. Note the position of hydraulic fittings (especially
elbow fittings) on hydraulic components before
removal. Mark parts if necessary to make sure they will
be aligned properly when reinstalling hydraulic hoses
and tubes.
GreensPro 1200
To relieve hydraulic pressure in the traction circuit,
depress each of the motion pedals fully.
If a component failure occurs in the traction circuit, it is
critical that the entire traction circuit be drained,
disassembled, and thoroughly cleaned to ensure that
all contamination is removed from the circuit. Replace
the oil filter. If any debris remains in the traction circuit
and the machine is operated, the debris can cause
additional component failure.
After Repair or Replacement of Components
1. Check oil level in the hydraulic reservoir and add
correct oil, if necessary. Drain and refill hydraulic
system reservoir. Change oil filter if component failure
was severe or system is contaminated. (Refer to
Operator's Manual.)
2. Lubricate O-rings and seals with clean hydraulic oil
before installing hydraulic components.
3. Make sure caps and plugs are removed from the
hydraulic tubes, hydraulic fittings, and components
before reconnecting.
4. Use proper tightening methods when installing
hydraulic hoses and fittings. (See Hydraulic Fitting
Installation in this section.)
5. Make sure caps or plugs are removed from the
hydraulic tubes, hydraulic fittings, and components
before reconnecting.
6. After repairs, check control linkages or cables for
proper adjustment, binding, or broken parts.
7. After disconnecting or replacing any hydraulic
components, operate machine functions slowly until air
is out of system.
8. Check for hydraulic oil leaks. Shut off engine and
after repairs are
correct leaks if necessary. Check oil level in hydraulic
reservoir and add correct oil if necessary.
9. When disposing of hazardous waste products, take
them to an authorized disposal site. Waste products
must not be allowed to contaminate surface water,
drains, or sewer systems.
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