Groundsmaster 4300--DHydraulic System Page 4 -- 52
Gear Pump (P4) Flow Test
(Using Tester with Pressure Gauges and Flow Meter)
Figure 53
GEAR
PUMP
LIFT
CONTROL
MANIFOLD
TO STEERING
CONTROL VALVE
INTERNAL
CASE
DRAIN
PUMP (P5)
TO DECK CONTROL MANIFOLD
(REAR CUTTING UNITS)
(FRONT CUTTING UNITS)
TO DECK CONTROL MANIFOLD
FROM MOW CONTROL
MANIFOLD
TESTER
The gear pump (P4) flow test should be performed to
make sure that the cutting deck liftcircuit has adequate
hydraulic flow.
Procedure for Gear Pump (P4) 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.
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.
To Next Page
Loading...
