Main Control Valve Body: Installation

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Install new O-rings (7H420) on the feed tubes and lubricate with clean transmission fluid.
Material: Motorcraft ® MERCON ® LV Automatic Transmission Fluid / XT-10-QLVC (MERCON ® LV) (WSS-M2C938-A)

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NOTE: Slip yoke transmission feed tubes shown in illustration, fixed flange /4WD transmission feed tubes similar.

Install the feed tubes.
1. Fluid supply feed tube assembly.
2. Intermediate (2, 6) clutch fluid supply feed tube.
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NOTE: Do not push seals all the way down into main control valve body. Seals will be seated when main control valve body is installed to the transmission.

Install the new pump feed seals.

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NOTE: Note the ports where the feed seals are removed from. Failure to install the feed seals in the ports they were removed from can result in pressure loss and transmission failure.

Lubricate the new clutch feed seals with clean transmission fluid and install them in the transmission.
1. Vehicle with slip yoke transmission
Material: Motorcraft ® MERCON ® LV Automatic Transmission Fluid / XT-10-QLVC (MERCON ® LV) (WSS-M2C938-A)

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NOTE: The 3 long bolts hold the valve body in and the 3 short bolts hold the feed tubes in.

NOTE: Slip yoke transmissions have 3 feed tubes and fixed flange /4WD transmissions have 2 feed tubes.

Position the main control in place and install the main control bolts and the feed tube bolts.
1. Vehicle with slip yoke transmission
  Torque: 97 lb.in (11 Nm)
2. Vehicle with fixed flange / 4WD transmission
  Torque: 97 lb.in (11 Nm)
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NOTE: Do not bend the manual valve rod clip when installing the manual valve rod. If the manual valve rod clip is bent back to install the manual valve rod instead of sliding it off, the manual valve rod clip will become permanently distorted causing total loss of transmission control or transmission failure. If the manual valve rod clip is bent, install a new manual valve rod clip.

Install the manual valve rod in the manual valve and the TR sensor and slide the manual valve rod clip over the manual valve rod until the manual valve rod clip tab goes through the TR sensor to hold the manual valve rod in place.
1. Manual valve rod
2. Manual valve
3. TR sensor
4. Manual valve rod clip
5. Manual valve rod clip tab
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Position the wiring harness in place and connect the electrical connectors.
1. solenoids.
2. TFT sensor
3. TSS sensor.
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Install the transmission fluid filter and fluid pan. Refer to: Transmission Fluid Pan, Gasket and Filter .
If the main control was replaced, download the solenoid body strategy. Refer to: Transmission Strategy Download .