2003 Ford ZX2 AutomaticFACTORY OEM SERVICE PROCEDURE

Main Control Valve Body - Assembly: Assembly

CAUTION: Handle the main control valve body carefully. If any of the components are damaged, it may become the cause of malfunctions in the transmission.
  1. Install the (A) oil strainer into the lower control valve body.
    Fig 1: Installing Oil Strainer Into Lower Control Valve Body
    G01371830Courtesy of FORD MOTOR CO.
  2. Set the filter into the lower separator plate.
    Fig 2: Setting Filter Into Lower Separator Plate
    G01371831Courtesy of FORD MOTOR CO.
  3. Identify the (A) premain lower gasket and the (B) lower gasket.
    Fig 3: Identifying Premain Lower Gasket And Lower Gasket
    G01371832Courtesy of FORD MOTOR CO.
  4. Set the new (C) lower gasket, (B) lower separator plate and a new (A) premain lower gasket onto the lower valve body.
    Fig 4: Setting Lower Gasket, Lower Separator Plate And Premain Lower Gasket
    G01371833Courtesy of FORD MOTOR CO.
  5. Install the (A) premain control valve body onto the (B) lower valve body.
    Fig 5: Installing Premain Control Valve Body
    G01371834Courtesy of FORD MOTOR CO.
  6. Install the rubber check balls and oil strainers in the premain control valve body.
    1. Install the rubber check balls.
    2. Install the oil strainers.
    Fig 6: Installing Rubber Check Balls And Oil Strainers
    G01371835Courtesy of FORD MOTOR CO.
  7. Install the rubber check balls into their proper positions in the main control valve body.
    Fig 7: Installing Rubber Check Balls Into Their Proper Positions In Main Control Valve Body
    G01371836Courtesy of FORD MOTOR CO.
  8. Identify the (A) premain gasket and the (B) main gasket.
    Fig 8: Identifying Premain Gasket And Main Gasket
    G01371837Courtesy of FORD MOTOR CO.
  9. Install the new (A) main gasket, (B) separator plate, and the new (C) premain gasket.
    Fig 9: Installing Main Gasket, Separator Plate And Premain Gasket
    G01371838Courtesy of FORD MOTOR CO.
  10. Install the screws securing the main gasket, main separator plate, and the premain gasket to the main control valve body.
    Fig 10: Installing Screws Securing Main Gasket, Main Separator Plate And Premain Gasket
    G01371839Courtesy of FORD MOTOR CO.
    11. NOTE: If the bolts are difficult to tighten, do not force the bolts in. The gasket may be out of place. Remove the valve body and reset the gasket.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.