Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
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Traction Circuit Charge Pressure Test<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 />
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 />
3. Remove plug from auxiliary test port on left side of<br />
piston (traction) pump (Fig. 13). Connect a 1000 PSI<br />
gauge into auxiliary test port.<br />
Figure 13<br />
1. Auxiliary test port plug<br />
1<br />
4. After installing pressure gauge, start engine and run<br />
at idle speed. Check for hydraulic leakage and correct<br />
before proceeding with test.<br />
Hydraulic<br />
System<br />
5. Operate the engine at high idle engine speed (3050<br />
– 3150 RPM) with no load on the hydraulic system.<br />
GAUGE READING TO BE 250 to 300 PSI.<br />
6. Stop engine and record test results.<br />
7. If there is no pressure, or pressure is low, check for<br />
restriction in pump suction line. Also, inspect charge relief<br />
valve located in charge pump adapter on piston<br />
pump. If necessary, check for internal damage or worn<br />
parts in charge pump.<br />
8. Also, with the pressure gauge still connected to the<br />
auxiliary test port on piston pump, take a gauge reading<br />
while operating the machine in forward and reverse.<br />
Start the engine and put throttle at high idle engine<br />
speed. Apply the brakes and push the traction pedal forward,<br />
then reverse.<br />
GAUGE READING TO BE 250 to 300 PSI.<br />
9. If charge pressure is good under no load, but drops<br />
below specification when under traction load, the piston<br />
(traction) pump and/or traction wheel motor(s) should<br />
be suspected of wear and inefficiency. When the piston<br />
pump and/or traction motor(s) are worn or damaged, the<br />
charge pump is not able to keep up with internal leakage<br />
in traction circuit components.<br />
10.Disconnect pressure gauge from piston pump and<br />
reinstall plug to auxiliary test port.<br />
<strong>Multi</strong> <strong>Pro</strong> <strong>5700</strong>–D<br />
Page 4 – 17<br />
Hydraulic System
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