Troubleshooting - Toro Reelmaster 6500-D 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 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.
General Troubleshooting
Cause
Hydraulic oil leak(s).
Difficult to Find Neutral
Cause
External control linkage misadjusted, disconnected,
binding or damaged.
Servo control valve faulty.
Pump worn or damaged.
Traction Pedal is Sluggish
Cause
Charge pressure low.
Servo control valve faulty.
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.
Refer to the Testing section of this Chapter for precau-
tions and specific test procedures.
Correction
Fitting(s), hose or tube loose or damaged.
Missing or damaged O-ring.
Correction
Adjust or repair linkage.
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.
Repair or replace pump.
Correction
TEST NO. 1. Inspect charge relief valve R5.
Repair or replace if defective.
Inspect control valve for:
Missing center orifice.
Plugged control orifices.
Galled or stuck control spool.
Repair or replace control valve if necessary.
Page 4 - 26 Reelmaster 6500-D/6700-D