Toro GroundsmasterR 4300-D User Manual

Groundsmaster 4300--DHydraulic System Page 4 -- 50
Lift Relief Valve (PRV) Pressure Test
Figure 51
GEAR
PUMP
LIFT
CONTROL
MANIFOLD
TO STEERING
CONTROL VALVE
PRESSURE
GAUGE
INTERNAL
CASE
DRAIN
PUMP (P5)
TO DECK CONTROL MANIFOLD
(REAR CUTTING UNITS)
(FRONT CUTTING UNITS)
TO DECK CONTROL MANIFOLD
FROM MOW CONTROL
MANIFOLD
The lift relief valve (PRV) pressure test should be per-
formed tomake sure thatthe lift circuitrelief pressureis
correct.
Procedure for Lift Relief Valve (PRV) Pressure
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.
4. Gain access to hydraulic lift control manifold by re-
moving theoperator floor plate.The lift controlmanifold
is attachedto aframe bracketunder thefloor plate(Fig.
52).

Toro GroundsmasterR 4300-D Specifications

General

Brand	Toro
Model	GroundsmasterR 4300-D
Category	Lawn Mower
Language	English