Repairs; Removing Hydraulic System Components - Toro Groundsmaster 455-D Service Manual

Repairs

Removing Hydraulic System Components

1. Thoroughly clean the machine before disconnecting,
removing or disassembling any hydraulic components.
Always keep in mind the need for cleanliness when
working on hydraulic equipment.
2. Put caps or plugs on any hydraulic lines or fittings left
open or exposed.
3. Put labels on disconnected hydraulic lines and hoses
for proper installation after repairs are completed.
After Repair or Replacement of Components
1. Check oil level in hydraulic reservoir and add correct
oil if necessary. Drain and refill hydraulic system reser­
voir and change oil filter if component failure was severe
or system is contaminated.
2. After repairs, check control linkage for proper adjust­
ment, binding or broken parts.
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Groundsmaster 455-D
3. If a pump was disconnected or removed, prime
system before operating. Disconnect fuel stop solenoid
electrical connector on engine to prevent fuel delivery
to engine cylinders. Turn ignition switch to engage
starter for ten (10) seconds to prime pumps. Repeat
cranking procedure again. Connect injection pump fuel
stop solenoid electrical connector. Start engine and run
at idle speed for a minimum of two (2) minutes.
4. After disconnecting or replacing any hydraulic com­
ponents, operate machine functions slowly until air is
out of system.
5. Check for hydraulic oil leaks. Shut off engine and
correct leaks if necessary. Check oil level in hydraulic
reservoir and add correct oil if necessary.
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