Toro GroundsmasterR 4300-D User Manual

Groundsmaster 4300--DHydraulic System Page 4 -- 44
Relief Valve (PRV1) and (PRV2) Pressure Test
Figure 45
GEAR
PUMP
CROSSTRAX
MANIFOLD
BYPASS
PISTON
(TRACTION)
PUMP
DECK
CONTROL
MANIFOLD
VALVE
FROM STEERING CONTROL VALVE
RELIEF VALVE (PRV1)
TEST SHOWN
FROM LIFT CONTROL MANIFOLD
TO LIFT CONTROL MANIFOLD
TO STEERING CONTROL VALVE AND CHARGE CIRCUIT
TESTER
ROTATION
DIRECTION
MOTOR
OUTLET
MOTOR
INLET
CASE DRAIN
The relief valve (PRV1) and (PRV2) pressure test
should be performedto make sure thatthe cutting deck
circuit relief pressures are correct.
NOTE: Thefrontcuttingdeckcircuitisprotectedbypro-
portional relief valve (PRV2) in the deck control man-
ifold. The rear cutting deck circuit is protected by
proportional relief valve (PRV1) (see Hydraulic Flow
Diagrams in this chapter).
Procedure for Relief Valve (PRV1) and (PRV2)
Pres-
sure
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 and mow speed limiter is in the mow position. Apply
the parking brake.

Toro GroundsmasterR 4300-D Specifications

General

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