Wheel Motor Efficiency Test - Toro Greensmaster TriFlex 3300 Service Manual

Wheel Motor Efficiency Test (Using Tester with Flowmeter and Pressure Gauge)
TO POWER
STEERING VALVE
TO MOW
CONTROL VALVE
GEAR
PUMP
1.44
.58
.33
FROM
HYDRAULIC
TRANSPORT = 17.5 GPM AT 10 MPH
RESERVOIR
PUMP FROM GREENSMASTER 3300
UPPER
FITTING
FRONT
NOTE: Over a period of time, a wheel motor can wear
internally. A worn motor may by--pass oil to its case drain
causing the motor to be less efficient. Eventually,
enough oil loss will cause the wheel motor to stall under
heavy load conditions. Continued operation with a worn,
inefficient motor can generate excessive heat, cause
damage to seals and other components in the hydraulic
system and affect overall machine performance.
Hydraulic System
FROM
POWER STEERING AND
LIFT CONTROL VALVES
C
3000
PSI
110 -- 150
PSI
3000
PSI
MOW = 6.7 GPM AT 3.8 MPH
PISTON
PUMP
WHEEL MOTOR EFFICIENCY TEST FOR
RIGHT FRONT WHEEL MOTOR SHOWN
HYDROSTAT
70 to
100
PSI
1.9 GPM
C1
BOTTOM
PORT
BYPASS
VALVE
PUMP FROM GREENSMASTER 3400
UPPER
FITTING
FRONT
PISTON
PUMP
Procedure for Wheel Motor Efficiency Test:
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately ten
(10) minutes. Make sure the hydraulic tank is full.
2. Park machine on a level surface with the cutting units
lowered and off. Make sure engine is off. Make sure the
hydraulic tank is full.
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TESTER
A
TOP
PORT
CAP
G2
10.3
ENGINE
CAP
G1
20.6
B B A
OPTIONAL 3WD
Greensmaster 3300/3400
10.3