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Reelmaster 4000–D
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Hydraulic System
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.
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.
Problem
Possible Causes
Hydraulic oil leak(s). Fitting(s), hose, or tube loose or damaged.
Missing or damaged o–ring.
Slow or no traction in either direction. Low engine RPM.
Low hydraulic oil level.
Open or damaged traction pump by–pass valve.
Disengaged or damaged final drive.
Loose or damaged traction linkage.
Low charge pressure. (See Test No. 8.)
Low traction pressure. (See Test No. 1.)
Damaged or worn traction motors.
Reels slow or won’t turn. Low engine RPM.
Low hydraulic oil level.
Reel to bedknife adjustment too tight.
Improper reel drive motor belt adjustment.
Low reel shut–off valves.
Low reel system pressure. (See Test No. 3.)
Worn or damaged priority flow divider.
Low flow to reel motors. (See Test No. 4.)
Inefficient reel motor. (See Test No. 5.)