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Reelmaster 3550−DHydraulic System Page 4 − 36
Traction Unit Testing − Wheel Motor Efficiency Tests
Figure 27
3500 PSI
100−150 PSI
G2
G1
C2
200−300
BYPASS
VALVE
TRACTION WHEEL MOTORS
FRONT
REAR
FRONT
PSI
HYDROSTAT
FROM
CHARGE RELIEF
FORWARD
TESTER WITH
PRESSURE GUAGE
AND FLOW METER
LOWER
PORT
UPPER
PORT
High Pressure
Low Pressure
Return or Suction
Flow
FRONT WHEEL MOTOR TEST
(together)
FRONT WHEEL MOTOR TEST
(individually)
REAR WHEEL MOTOR TEST
TO GEAR PUMP
SUCTION
THROUGH
CASE DRAIN
TRACTION WHEEL MOTORS
FRONT
REAR
FRONT
FORWARD
TESTER WITH
PRESSURE GUAGE
AND FLOW METER
UPPER PORT
PISTON PUMP
(HYDROSTAT)
LOWER PORT
PISTON PUMP
(HYDROSTAT)
TRACTION WHEEL MOTORS
FRONT
REAR
FRONT
FORWARD
TESTER WITH
PRESSURE GUAGE
AND FLOW METER
UPPER PORT
PISTON PUMP
(HYDROSTAT)
LOWER PORT
PISTON PUMP
(HYDROSTAT)
LIFT
MANIFOLD
(T) PORT
CONTROL