Groundsmaster 4300--DHydraulic System Page 4 -- 38
Gear Pump (P3) Flow Test
(Using Tester with Pressure Gauges and Flow Meter)
Figure 39
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
OIL FILTER
REMOVED
AND TUBE
TESTER
The gear pump (P3) flow test should be performed to
make sure that the traction charge circuit and steering
circuit have adequate hydraulic flow.
Procedure for Gear Pump (P3) Flow
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.
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