Toro Groundsmaster 3505-D - Wheel Motor Efficiency Test

Groundsmaster 3505--DHydraulic System Page 4 -- 32
Wheel Motor Efficiency Test (Using Tester with Pressure Gauges and Flow Meter)
High Pressure
Low Pressure
Return or Suction
Flow
M4
M5
DUMP
VALVE
P3
PISTON PUMP
LOWER
PORT
UPPER
PORT
TO GEAR PUMP SUCTION
FORWARD
TRACTION WHEEL
FROM HYDRAULIC
MANIFOLD (CHG) PORT
THROUGH CASE DRAIN
(HYDROSTAT)
MOTORS
TESTER
HYDRAULIC
100 to 150 psi
3000 psi
TRACTION
RELIEF
CHARGE
RELIEF
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.