Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
Multi Pro 5700 - Toro
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Troubleshooting<br />
The cause of an improperly functioning hydraulic system<br />
is best diagnosed with the use of proper testing<br />
equipment and a thorough understanding of the complete<br />
hydraulic system.<br />
A hydraulic system with an excessive increase in heat<br />
or noise has a potential for failure. Should either of these<br />
conditions be noticed, immediately stop the machine,<br />
turn off the engine, locate the cause of the trouble, and<br />
correct it before allowing the machine to be used again.<br />
Continued use of an improperly functioning hydraulic<br />
system could lead to extensive internal component<br />
damage.<br />
The chart that follows contains information to assist in<br />
troubleshooting. There may possibly be more than one<br />
cause for a machine malfunction.<br />
Refer to the Testing section of this Chapter for precautions<br />
and specific test procedures.<br />
<strong>Pro</strong>blem<br />
Hydraulic oil leaks.<br />
Possible Cause<br />
Hydraulic fitting(s) or hose(s) are loose or damaged.<br />
O--ring(s) or seal(s) are missing or damaged.<br />
Foaming hydraulic fluid.<br />
Oil level in reservoir is incorrect.<br />
Hydraulic system has wrong kind of oil.<br />
Piston and/or gear pump suction line has an air leak.<br />
Water in hydraulic system.<br />
Hydraulic system operates hot.<br />
Oil level in reservoir is incorrect.<br />
Hydraulic hose is kinked.<br />
Oil is contaminated or incorrect viscosity.<br />
Brakes are engaged or sticking.<br />
Piston pump by--pass valve is open or damaged.<br />
Hydraulic oil cooling system is not operating properly.<br />
Charge pressure is low.<br />
Traction circuit pressure is incorrect.<br />
Wheel motor(s) or spray pump motor is/are worn or damaged.<br />
Gear pump or piston (traction) pump is worn or damaged.<br />
Machine operates in one direction<br />
only.<br />
Traction pedal is sluggish.<br />
Traction control linkage is faulty.<br />
System charge check valve and/or system relief valve is defective.<br />
Traction control linkage is stuck or binding.<br />
Piston pump manual servo control assembly is damaged.<br />
Piston pump or wheel motor(s) are worn or damaged.<br />
Charge pressure is low.<br />
Hydraulic System Page 4 - 14<br />
<strong>Multi</strong> <strong>Pro</strong> <strong>5700</strong>--D