Control Valve Upper Body Replacement

Control Valve Upper Body Replacement

Removal Procedure






1. Remove the valvebody. Refer to: Control Valve Body Assembly
2. Remove the solenoid cover-to-valvebody bolts identified by heavy circles and remove the solenoid cover. For reference, the solenoid locations are identified as follows:
- The pressure control solenoid
- The shift solenoid 2
- The TCC solenoid
- The shift solenoid 4
- The shift solenoid 3






3. Lift solenoid connector plate off solenoid valve pins using care not to damage connector plate.

Important: Note the locations of the solenoids before removal.

4. Remove the solenoid valves by using a twisting motion.






5. Remove the bolt retaining the 2 halves of valvebody. For reference, the bolts are identified as follows:
- The valvebody-to-case dowel bolts
- The upper-to-lower valvebody dowel bolts
- The bolt holding upper and lower valvebody

Important: Note the ball check valve positions when taking 2 halves apart.

6. Separate the upper valve body from the lower valvebody.






7. Remove the spacer plate and ball check valves.

Installation Procedure






Important: Be sure the upper and lower valvebody halves are clean and free of lint and dirt. The valvebody should be assembled in a clean area.

1. Install the new spacer plate gaskets on the spacer plate.
2. Install the 2 transaxle ball check valves in the lower valvebody, on top of the springs. Refer to illustration on facing page.
3. Install the spacer plate on top of the lower valvebody and the transaxle ball check valves.
4. Install the transaxle ball check valve on top of the spacer plate.






Important: The dowel bolts must be placed in the holes shown to align the upper valvebody to the lower valvebody. For reference, the bolts are identified as follows:
- The valvebody-to-case dowel bolts (1)
- The upper-to-lower valvebody dowel bolts (2)
- The bolt holding upper and lower valvebody (3)

5. Install 2 halves of valvebody and install the 1 bolt holding the 3 halves together (3).
6. Lube the solenoid valve O-rings.






7. Install the solenoids with a twisting motion.






8. Check the connector plate terminals with a #43 (2.25 mm) drill bit. There should be a slight drag on the shank. If there is no drag, replace the connector plate.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.






Notice: Over-torqueing bolts can cause valves to bind.

9. Torque the solenoid cover bolts using torque sequence shown in illustration.

Tighten
Tighten the valvebody assembly bolts to 11 Nm (8 lb ft).

10. Install the valvebody assembly. Refer to: Control Valve Body Assembly