Groundsmaster 4300--DHydraulic System Page 4 -- 36
Traction Circuit Charge Pressure Test
Figure 36
GEAR
PUMP
CROSSTRAX
MANIFOLD
BYPASS
PISTON
(TRACTION)
PUMP
VALVE
FROM STEERING CONTROL VALVE
TO LIFT CONTROL MANIFOLD
TO STEERING CONTROL VALVE AND CHARGE CIRCUIT
TO MOW CONTROL
(REAR CUTTING UNITS)
(FRONT CUTTING UNITS)
TO MOW CONTROL
PRESSURE
GAUGE
OIL FILTER
REMOVED
The traction circuit charge pressure test should be per-
formed to make sure that the traction charge circuit is
functioning correctly.
ProcedureforTractionCircuitChargePressure
Test
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine under load for
approximately ten (10) minutes.
2. Park machine on a level surface with the cutting
deckslowered andPTOswitch off.Makesureengine is
off. Apply the parking brake.
3. Read Precautions For Hydraulic Testing in this sec-
tion.
CAUTION
Beforeopeninghydraulicsystem,operateallhy-
draulic controls to relieve system pressure and
avoid injury from pressurized hydraulic oil. See
RelievingHydraulicSystemPressurein theGen-
eral Information section of this chapter.