Covers the ZF4HP-18 FLE & FLA Transmission diagnostics including:

• Principles of Operation
• Complete hydraulic circuit diagrams
• Valve Body Mapping (passage identification for the valve body and all spacer plates)
• Complete exploded view of the valve body
• Identification of all valves and springs

Contents:

• Solenoid Resistance Check & Terminal ID
• Wire Schematic
• Solenoid & Clutch Application
• Valve Body Breakdown
• Spring Specs
• Retainer, Checkball & Orifice Location
• Pressure Tap Location
• Hydraulic Schematics
  
  • Park / Neutral
  • Reverse
  • Drive Range 1st Gear
  • Drive Range 2nd Gear
  • Drive Range 3rd Gear
  • Drive Range 4th Gear
  • Manual "1" Range 1st Gear
  • Drive Range 2nd Gear (Limp-In)
• Valve Body Mapping / Passage ID
• Neutral After 3-4 Up-Shift TSB

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