Toro Multi Pro 5800 Service Manual page 73

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.
IMPORTANT: Refer to Traction Circuit Component
Failure in the General Information section of this
chapter for information regarding the importance of
removing contamination from the traction circuit.
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, stop engine, en-
gage parking brake and remove key from the ignition
switch. After turning engine off, operate all hydraulic
controls to relieve hydraulic system pressure.
CAUTION
Prevent personal injury and/or damage to equip-
ment. Read all WARNINGS, CAUTIONS and Pre-
cautions for Hydraulic Testing at the beginning
of this section.
3. Make sure that traction pedal is adjusted to the neu-
tral position (see Adjust Traction Pedal for Neutral in the
Adjustments section of this Chapter).
4. Attach a heavy chain to the rear of the machine frame
and an immovable object to prevent the machine from
moving during testing.
5. Chock rear wheel being tested to prevent rotation of
the wheel. Make sure parking brake is engaged.
6. To test right side (RH) wheel motor efficiency (Fig.
29):
A. Thoroughly clean fittings and hydraulic lines at
both wheel motors.
B. Remove hydraulic tube (item 7 in Fig. 29) from
between the tee fitting on RH wheel motor and the
straight fitting on LH wheel motor.
C. Install metal cap on opening of both the tee fitting
(RH side) and straight fitting (LH side).
D. Disconnect hydraulic hose from tee fitting on RH
wheel motor.
Multi Pro 5800
6
5
1. RH wheel motor
2. RH straight fitting
3. RH tee fitting
4. LH tee fitting
IMPORTANT: Make sure that the oil flow indica-
tor arrow on the flow meter is showing that the oil
will flow from the pump, through the tester and
into the tee fitting in the RH wheel motor.
E. Install tester with pressure gauge and flow meter
in series with the disconnected hose and the tee fit-
ting in the RH wheel motor. Make sure the tester
flow control valve is fully open.
7. To test left side (LH) wheel motor efficiency (Fig. 29):
A. Thoroughly clean tee fitting and hydraulic lines at
RH wheel motor.
B. Disconnect hydraulic hose and hydraulic tube
from tee fitting on RH wheel motor. Remove tee fit-
ting from RH wheel motor.
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C. Install 90
340--129) in open end of hydraulic tube. Install metal
plug in open port of RH wheel motor.
IMPORTANT: Make sure that the oil flow indica-
tor arrow on the flow meter is showing that the oil
will flow from the pump, through the tester and
o
into the 90 fitting in the hydraulic tube.
D. Install tester with pressure gauge and flow meter
in series with the disconnected hose and the 90
draulic fitting. Make sure the tester flow control
valve is fully open.
8. Start engine and run at low idle speed. Check for any
hydraulic leakage from tester and hydraulic line connec-
tions. Correct any leaks before proceeding.
9. Move throttle so engine is running at high idle speed
(3050 to 3150 RPM).
Page 4 - - 35
8
7
3
4
Figure 29
5. LH wheel motor
6. LH straight fitting
7. Front hydraulic tube
8. Hydraulic hose
hydraulic fitting (Toro part number
Hydraulic System
1
2
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hy-