Troubleshooting; Troubleshooting; General Hydraulic System Problems - Toro Reelmaster 5010- H Service Manual

Troubleshooting

The cause of an improperly functioning hydraulic sys-
tem is best diagnosed with the use of proper testing
equipment and a thorough understanding of the com-
plete hydraulic system.
A hydraulic system with an excessive increase in heat
or noise has a potential for failure. Should either of these
conditions be noticed, immediately stop the machine,
turn off the engine, locate the cause of the trouble and
correct it before allowing the machine to be used again.

General Hydraulic System Problems

Problem
Hydraulic oil leaks from machine
Foaming hydraulic fluid
Hydraulic system operates hot
Reelmaster 5010- H
Continued use of an improperly functioning hydraulic
system could lead to extensive hydraulic component
damage.
The charts that follow contain information to assist in
troubleshooting. There may possibly be more than one
cause for a machine malfunction.
Refer to the Testing section of this chapter for precau-
tions and specific hydraulic test procedures.
Possible Cause
Fitting(s), hose(s) or tube(s) is (are) loose or damaged.
O- ring(s) or seal(s) is (are) missing or damaged.
Oil level in hydraulic reservoir is low.
Hydraulic system has wrong kind of oil.
Pump suction line has an air leak.
Traction system pressure is high due to excessive load or brake
dragging or binding.
Oil level in hydraulic reservoir is low.
Hydraulic oil is contaminated or too light.
Engine speed is too low.
Engine fan is not operating properly.
Oil cooler is damaged or plugged. Air flow through oil cooler is ob-
structed.
Hydraulic oil filter is plugged.
Charge pressure is low.
Piston (traction) pump bypass valve is open or faulty.
Piston (traction) pump check valve is not seating or is damaged.
Wheel motor(s) and/or piston (traction) pump are worn or damaged
(NOTE: If a traction circuit component has internal wear or dam-
age, it is possible that other traction components are also dam-
aged).
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