Toro 04384 Service Manual page 66

Piston (Traction) Pump Flow Test (Using Tester with Flowmeter and Pressure Gauge)
TO STEERING
VALVE
TO CONTROL
MANIFOLD
PORT P1
TRACTION PUMP
GEAR
.33 .58
PUMP
FROM HYDRAULIC
RESERVOIR
Procedure for Piston (Traction) Pump Flow Test
This test measures piston pump output (flow). During
this test, pump load is created at the flowmeter using the
adjustable load valve on the tester.
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately ten
(10) minutes.
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.
Hydraulic System
FROM CONTROL
MANIFOLD PORT PT
3000 PSI
1.24
3000 PSI
110--150
PSI
70--100
PSI
Before continuing further, read and become fa-
miliar with Precautions for Hydraulic Testing.
3. Make sure that traction pedal is adjusted to the neu-
tral position (see Traction Unit Operator's Manual).
Also, ensure that pump is at full stroke when traction
pedal is pushed into fully forward position.
Page 4 - - 34
TESTER
TOP
PORT
A
BYPASS
LEFT
VALVE
10.3
MOTOR
ENGINE RPM
2710/1500
20.6
B
BOTTOM
PORT
CAUTION
Greensmaster 3250--D
RIGHT
10.3
MOTOR
OPTIONAL
3WD KIT