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Condition: Incorrect Pressure

No Pressure

Cause Solution
No Flow Refer to INCORRECT FLOW CHART

Low Pressure

Cause Solution
Pressure Relief Path Exists Refer to INCORRECT FLOW CHART Columns: A&B
Pressure Redicing Valve Set to Low Clean and adjust or replace; check condition of system fluid and filters
Pressure Reducing Valve Damaged Overhaul or repair.
Damaged Pump, Motor, or Cylinder Overhaul or repair.

Erratic Pressure

Cause Solution
Air in Fluid Tighten leaking connections (fill reservoir to proper level and bleed air from system)
Worn Relief Valve Overhaul or repair.
Contamination in Fluid Replace dirty filters and system fluid
Accumulator Defective or Has Lost Charge Adjust, repair or replace
Worn Pump, Motor or Cylinder Overhaul or repair.

Excessive Pressure

Cause Solution
Pressure Reducing, Relief or Unloading Valve Misadjusted Clean and adjust or replace; check condition of system fluid and filters
Yoke Actuating Device Inoperative (Variable Displacement Pumps) Overhaul or repair.
Pressure Reducing, Relief or Unloading Valve Worn or Damaged Overhaul or repair.