Gear Pump (P3) Flow Test
(Using Tester with Pressure Gauges and Flow Meter)
TO STEERING CONTROL VALVE AND CHARGE CIRCUIT
TO MOW CONTROL
(FRONT CUTTING UNITS)
TO LIFT CONTROL MANIFOLD
TO MOW CONTROL
(REAR CUTTING UNITS)
GEAR
PUMP
BYPASS
VALVE
CROSSTRAX
MANIFOLD
PISTON
(TRACTION)
PUMP
TESTER
FROM STEERING CONTROL VALVE
OIL FILTER
AND TUBE
REMOVED
Figure 39
The gear pump (P3) flow test should be performed to
make sure that the traction charge circuit and steering
circuit have adequate hydraulic flow.
2. Park machine on a level surface with the cutting
decks lowered and PTO switch off. Make sure engine is
off. Apply the parking brake.
Procedure for Gear Pump (P3) Flow Test
3. Read Precautions For Hydraulic Testing in this sec-
tion.
1.
Make sure hydraulic oil is at normal operating tem-
perature by operating the machine under load for
approximately ten (10) minutes.
Hydraulic System
Page 4 -- 38
Groundsmaster 4300--D
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