Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
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Wheel Motor Efficiency: Case Drain Test<br />
NOTE: Over a period of time, a wheel motor can wear<br />
internally. A worn motor may by–pass oil to its case drain<br />
causing the motor to be less efficient. Eventually,<br />
enough oil loss will cause the wheel motor to stall under<br />
heavy load conditions. Continued operation with a worn,<br />
inefficient motor can generate excessive heat, cause<br />
damage to seals and other components in the hydraulic<br />
system and affect overall machine performance.<br />
1. Make sure hydraulic oil is at normal operating temperature<br />
by operating the machine for approximately 10<br />
minutes. Make sure the hydraulic tank is full.<br />
2. Park machine on a level surface, stop engine, engage<br />
parking brake, and remove key from the ignition<br />
switch. After turning engine off, operate all hydraulic<br />
controls to relieve hydraulic system pressure.<br />
CAUTION<br />
11. Wheel motor internal leakage will be shown on flow<br />
meter in GPM. Flow should be less than 2 GPM for the<br />
tested wheel motor.<br />
12.If specifications are not met, the tested wheel motor<br />
needs to be repaired or replaced as necessary.<br />
13.If other wheel motor requires testing, complete steps<br />
5 to 14 for the remaining motor.<br />
14.Disconnect tester from pump hydraulic fitting and<br />
hose. Reconnect hose to pump connection. Reconnect<br />
hydraulic lines to rear wheel motor.<br />
1<br />
3<br />
Prevent personal injury and/or damage to equipment.<br />
Read all WARNINGS, CAUTIONS, and Precautions<br />
for Hydraulic Testing at the beginning<br />
of this section.<br />
Hydraulic<br />
System<br />
3. Make sure that traction pedal is adjusted to the neutral<br />
position (see Adjust Traction Pedal for Neutral in the<br />
Adjustments section of this Chapter).<br />
4. Attach a heavy chain to the rear of the machine frame<br />
and an immovable object to prevent the machine from<br />
moving during testing.<br />
5. Chock rear wheel being tested to prevent rotation of<br />
the wheel. Make sure parking brake is engaged.<br />
6. Disconnect hydraulic tee fitting and pressure hose<br />
from rear wheel motor that is not being tested (Fig. 20).<br />
Cap disconnected fitting and hose. Plug ports in wheel<br />
motor to prevent contamination.<br />
Figure 20<br />
1. Wheel motor (RH shown) 3. Pressure hose<br />
2. Hydraulic tee fitting<br />
1<br />
2<br />
2<br />
7. Disconnect hose from the upper hydraulic fitting on<br />
the right side of the piston (traction) pump (Fig. 21).<br />
8. Install tester with pressure gauges and flow meter in<br />
series with the piston pump and the disconnected hose.<br />
Make sure the tester flow control valve is fully open.<br />
9. Start engine and move throttle to high idle (3050 –<br />
3150 RPM).<br />
Figure 21<br />
1. Upper hydraulic hose 2. Piston (traction) pump<br />
10.Sit on seat, apply brakes fully, and slowly depress the<br />
traction pedal in forward direction until 1000 PSI is displayed<br />
on the tester pressure gauge.<br />
<strong>Multi</strong> <strong>Pro</strong> <strong>5700</strong>–D Page 4 – 23 Hydraulic System