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All Hydraulic Functions Slow
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Cold hydraulic oil.
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Heat hydraulic oil.
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Pilot circuit malfunction.
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See your authorized dealer.
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Low oil level.
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Check tank oil level.
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Oil viscosity too heavy.
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Use the recommended oil (See Fuels and Lubricants chapter).
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Slow engine speed.
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See your authorized dealer.
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Air leak in pump suction lines.
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Check for air bubbles in oil.
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Restricted pump suction screen.
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Check pump suction screen.
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Worn pumps.
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See your authorized dealer.
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Hydraulic Oil Overheats
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Low oil level.
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Check tank oil level.
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Oil viscosity too light.
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Use the recommended oil. (See Fuels and Lubricants chapter.)
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Clogged oil cooler (air side).
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Clean oil cooler.
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Restricted oil cooler hoses.
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Check hose routing and condition.
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Cooler restrictor left off shear return pipe in tank, or stuck open.
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Check return pipe through tank inspection cover.
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System relief valve malfunction.
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See your authorized dealer.
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Circuit relief valve malfunction.
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See your authorized dealer.
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Control valve spool stuck.
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Check hydraulic system open center pressure with all valves in neutral.
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Restricted pump suction screen.
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Check pump suction screen.
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No Hydraulic Functions
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No oil.
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Check tank oil level.
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Pump drive.
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Remove pump and check pump drive coupling and drive shaft.
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No Hydraulic Functions Except Steering
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Pilot circuit malfunction.
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See your authorized dealer.
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| Symptom |
Problem |
Solution |
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No Saw/Shear Function
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Control valve malfunction.
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See your authorized dealer.
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Saw/shear control manifold malfunction.
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See your authorized dealer.
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Pilot controller circuit malfunction.
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See your authorized dealer.
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Hydraulic pump malfunction.
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See your authorized dealer.
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Pressure reducing valve malfunction.
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See your authorized dealer.
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No Saw/Shear Lift, Saw/Shear Tilt, Or Accumulator Functions
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System relief valve.
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See your authorized dealer.
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No Load Sense Signal To Pump
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See your authorized dealer.
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Pilot controller circuit malfunction.
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See your authorized dealer.
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No Saw/Shear Lift, Saw/Shear Tilt, Accumulator, Or Steering Functions
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No Load Sense Signal To Pump
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See your authorized dealer.
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Hydraulic pump malfunction.
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See your authorized dealer.
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