Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2004 Lincoln Navigator RWDFACTORY OEM SERVICE PROCEDURE

Pump Assembly: Assembly

Install the main regulator valve and sleeve assembly, converter clutch shift valve assembly, and the converter regulator valve assembly.
1. Install the converter clutch control valve assembly. Then apply pressure to the end plug and install the retainer, making sure it is correctly seated.
2. Install the converter regulator valve assembly. Then apply pressure to the end plug and install the retainer, making sure it is correctly seated.
3. Install the main regulator boost valve and sleeve assembly. Then apply pressure to the main regulator booster sleeve and install the retainer, making sure it is correctly seated.
Fig 1: Installing Main Regulator Valve & Sleeve Assembly, Converter Clutch Shift Valve Assembly, & Converter Regulator Valve Assembly
Courtesy of FORD MOTOR CO.

NOTE: Prior to installation, lightly lubricate the gerotor gears with clean automatic transmission fluid.

Factory Service Tools

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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.