Main Control Valve Body

Special Tools:

Disassembly





1. Remove the pump assembly.

2. Note: The valve body separator plate has a bonded gasket.





Remove the separator plate.

3. Note: Be sure to note the location of the check balls.





Remove the check balls.

4. Note: Be sure to note the location of the filters.





Remove the filters.

5. Note: Be sure to note the location of the relief valves.





Remove the relief valves

6. CAUTION: Most valves are aluminum and cannot be removed using a magnet. Remove the valves by tapping valve body on the palm of the hand to slide the valves out of the bores. It may be necessary to remove the valves and springs using a pick. If it is necessary to use a pick, use extreme caution to prevent damaging the valves or valve bores. If necessary, disassemble parts of the main control valve body in small groups. Take special care when handling the main control components, since they are the most precise and delicate parts of the transaxle. Neatly arrange the parts as they are removed to avoid mixing similar pieces.

CAUTION: Do not stone or polish any valves. If the valves do not move freely, install a new assembly.

Remove the individual valves and springs by removing the retaining clips and bore plugs. Refer to the main control valve body assembly illustration for valve and spring locations. Clean valves, springs and main control valve body.

Assembly








Main Control Valve Body Assembly

1. CAUTION: Do not stone or polish any of the valves. If the valves do not move freely during assembly, it is necessary to install a new valve body.

Install the valves and springs.

2. Note: Be sure to note the location of the check balls.





Install the check balls.

3. Note: Be sure to note the location of the filters.





Install the filters.

4. Note: Be sure to note the location of the relief valves.





Install the relief valves

5. CAUTION: Verify correct alignment of the relief and check valves to the separator plate before tightening the bolts. If the relief and check valves are incorrectly installed the transaxle will not operate correctly.

Note: The new gaskets are bonded to the separator plate.





Using the special tools, install a new valve body separator plate with bonded gasket.