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.
Continued use of an improperly functioning hydraulic
system could lead to extensive internal component
damage.
The charts that follow contain information to assist in
troubleshooting. There may possibly be more than one
cause for a machine malfunction.
A hydraulic system with an excessive increase in heat
or noise is a potential 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.
Refer to the Testing section of this Chapter for precau-
tions and specific test procedures.
General Troubleshooting
Cause
Correction
Hydraulic oil leak(s).
Fitting(s), hose or tube loose or damaged.
Missing or damaged O-ring.
Difficult to Find Neutral
Cause
Correction
External control linkage misadjusted, disconnected,
binding or damaged.
Adjust or repair linkage.
Servo control valve faulty.
Inspect control valve for:
Plugged control orifices.
Damaged mounting gasket.
Misadjusted or damaged neutral return spring.
Broken control connector pin.
Galled or stuck control spool.
Neutral switch misadjusted.
Repair or replace control valve if necessary.
Pump worn or damaged.
Repair or replace pump.
Traction Pedal is Sluggish
Cause
Correction
Charge pressure low.
TEST NO. 1. Inspect charge relief valve R5.
Repair or replace if defective.
Servo control valve faulty.
Inspect control valve for:
Missing center orifice.
Plugged control orifices.
Galled or stuck control spool.
Repair or replace control valve if necessary.
Hydraulic System
Page 4 - 26
Reelmaster 6500-D/6700-D
| Categories | Lawn Mower Manual, Toro Lawn Mower Manual |
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| Language | English |
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