Hydraulic System Start--up
NOTE: When initially starting the hydraulic system with
new or rebuilt components such as pumps, wheel mo-
tors or lift cylinders, it is important that this start--up pro-
cedure be used. This procedure reduces the chance of
damaging the system or its components from not purg-
ing the system of air.
7. Make sure traction pedal is in neutral and the PTO
switch is OFF. Turn ignition key switch to start; engage
starter for ten (10) seconds to prime hydraulic pumps.
Wait fifteen (15) seconds to allow the starter motor to
cool and then repeat cranking procedure again.
8.
Connect wire harness electrical connector to fuel
1.
After the hydraulic system components have been
stop solenoid to allow engine to start.
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.
9.
Make sure traction pedal is in neutral and the PTO
switch is OFF. Start engine and run it at low idle. The
charge pumpshould pick upoilandfillthe hydraulic sys-
tem. If there is no indication of fill in thirty (30) seconds,
stop the engine and determine the cause.
2.
cured tightly.
Makesureallhydraulicconnectionsandlinesarese-
3.
Drain, flush and refill hydraulic system and change
10.If the traction pump was replaced or rebuilt, run the
traction unit so the wheels turn slowly for ten (10) minu-
tes.
hydraulic oil filters if component failure was severe or
system is contaminated (see Flush Hydraulic System in
this section).
11.
Operate the traction unit (including steering and cut-
4.
if necessary.
Make sure hydraulic reservoir is full. Add correct oil
ting deck lift/lower) by gradually increasing the work
load to full over a ten (10) minute period.
5.
or broken parts.
Check control linkage for proper adjustment, binding
12.Stop the machine. Check oil level in hydraulic reser-
voir and add correct oil if necessary. Check hydraulic
components for leaks and tighten any loose connec-
tions.
6.
the engine fuel stop solenoid to prevent the engine from
starting.
Disconnect wire harness electrical connector from
Groundsmaster 4300--D
Page 4 -- 63
Hydraulic System
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