Toro ProCore 648 Service Manual page 66

Wheel Motor Efficiency Test (Using Tester With Flow Meter and Pressure Gauge)
G1
PV
P CHG
P1
P2
NOTE: Over a period of time, a wheel motor can wear
internally. A worn motor will be less efficient and eventu-
ally, will allow 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
SVR
R1
R2
G2 T
'B' PORT
FORWARD
(BOTTOM)
'A' PORT
(TOP)
Page 4 - - 28
ORF1
SVL
SVQ
CONTROL
MANIFOLD
'P' PORT
CAP
CAP
TESTER
Figure 24
Rev. C
LIFT
CYLINDER
CYL
TEST CONNECTION FOR
REAR WHEEL MOTOR SHOWN
FRONT
WHEEL
M1
'P' PORT
'P' PORT
M2 M3
Working Pressure
Low Pressure (Charge)
Return or Suction
Flow Direction
ProCore 648