Main Control
Main Control
Removal
1. Remove the fluid pan, gasket and filter. For additional information, refer to Fluid Pan, Gasket and Filter Fluid Pan, Gasket and Filter.
2. Disconnect the 7 solenoid electrical connectors and the Transmission Fluid Temperature (TFT) sensor electrical connector and position the transmission wiring harness aside.
3. NOTICE: Do not bend the manual valve rod clip when removing the manual valve rod. If the manual valve rod clip is bent back to remove 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.
Remove the manual valve rod. Pull the manual valve rod clip tab out of the TR (Transmission Range) sensor, slide the manual valve rod clip off of the manual valve rod and remove the manual valve rod from the TR (Transmission Range) sensor and the manual valve.
1. Manual valve rod clip
2. Manual valve rod clip tab
3. TR (Transmission Range) sensor
4. Manual valve rod
4. NOTE: Slip yoke transmissions have 3 feed tubes and fixed flange/Four-Wheel Drive (4WD) transmissions have 2 feed tubes.
Remove the 3 main control bolts, 3 feed tube bolts and remove the main control and feed tube assemblies.
5. NOTICE: 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.
Remove the 4 clutch feed seals.
6. Remove the 4 pump feed seals.
7. NOTE: Slip yoke transmission feed tubes shown, fixed flange/4WD (Four-Wheel Drive) transmission feed tubes similar.
Remove the feed tubes.
8. Remove and discard the O-rings from the feed tubes.
Installation
1. Install new O-rings on the feed tubes and lubricate with clean transmission fluid.
2. NOTE: Slip yoke transmission feed tubes shown, fixed flange/4WD (Four-Wheel Drive) transmission feed tubes similar.
Install the feed tubes.
3. 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 4 pump feed seals.
4. NOTICE: 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 4 new clutch feed seals and install them in the transmission.
5. 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 (Four-Wheel Drive) transmissions have 2 feed tubes.
Position the main control in place and install the 3 main control bolts and the 3 feed tube bolts.
- Tighten to 11 Nm (97 lb-in).
6. NOTICE: 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 (Transmission Range) sensor and move the manual valve rod clip over the manual valve rod until the manual valve rod clip tab goes through the TR (Transmission Range) sensor to hold the manual valve rod in place.
1. Manual valve rod
2. Manual valve
3. TR (Transmission Range) sensor
4. Manual valve rod clip
5. Manual valve rod clip tab
7. Position the wiring harness in place and connect the 7 solenoid electrical connectors and the TFT (Transmission Fluid Temperature) sensor electrical connector.
8. Install the transmission fluid pan and filter. For additional information, refer to Fluid Pan, Gasket and Filter Fluid Pan, Gasket and Filter.
9. Using the scan tool, download the solenoid body strategy. For additional information, refer to Solenoid Body Strategy Solenoid Body Strategy.