Hydraulic System Start--Up - Toro Greensmaster 3250-D 04383 Service Manual

Hydraulic System Start- -up
Note: When initially starting the hydraulic system with
new or rebuilt components such as motors, pumps, or
lift cylinders, it is important that this start--up procedure
be used. This procedure reduces the chance of damag-
ing the system or its components from not purging the
system of air.
1. After the hydraulic system components have been
properly installed and if the traction pump was rebuilt or
replaced, make sure traction pump housing is at least
half full of clean hydraulic oil.
2. Make sure all hydraulic connections and lines are
secured tightly.
3. Make sure hydraulic reservoir is full. Add correct oil
if necessary (see Check Hydraulic System Fluid). Drain,
flush, and refill hydraulic system reservoir and change
oil filter if component failure was severe or system is
contaminated.
4. Check control linkage for proper adjustment, bind-
ing, or broken parts.
5. Disconnect electrical connector to the fuel stop so-
lenoid to prevent the engine from starting.
6. Make sure traction pedal is in neutral and the cut-
ting unit switch is off. Turn ignition key switch; engage
starter for ten (10) seconds to the prime pump. Allow the
starter to cool and repeat this step again.
7. Reconnect electrical connector to the fuel stop sole-
noid.
8. Make sure traction pedal is in neutral and the cut-
ting unit switch is off. Start engine and run it at low idle.
The charge pump should pick up oil and fill the hydraulic
system. If there is no indication of fill in 30 seconds, stop
the engine and determine the cause.
Greensmaster 3250--D
Be careful when operating the cutting unit reels.
Contact with the reel or other moving parts can
result in personal injury.
9. After the hydraulic system starts to show signs of fill,
accomplish the following:
A. If a reel motor was replaced or rebuilt, run the
cutting units at the minimum speed setting (under
no load) for ten (10) minutes in both directions.
B. If a reel motor drive pump was replaced or re-
built, run the cutting units at the minimum speed set-
ting (under no load) for ten (10) minutes.
C. If a traction pump or a wheel motor was replaced
or rebuilt, run the traction unit so the wheels slowly
turn for ten (10) minutes.
10. Operate the traction unit and cutting unit by gradual-
ly increasing their work load to full over a ten (10) minute
period.
11. Stop the machine. Check reservoir and fill if neces-
sary. Check hydraulic components for leaks and tighten
any loose connections.
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CAUTION
Hydraulic System (Rev. I)