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Volvo Maintenance Hints for 7xx/9xx - Bill Garland's Nuclear ...

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<strong>Volvo</strong> AW-7X Transmission Valve Body<br />

Service<br />

FAQ Home<br />

<strong>Volvo</strong> <strong>Maintenance</strong> FAQ <strong>for</strong> <strong>7xx</strong>/<strong>9xx</strong>/90<br />

Cars Version 7.2<br />

Aisin-Warner AW-7X Valve Body Service in a <strong>Volvo</strong> 7XX-<br />

940 Car: Page 6<br />

All in<strong>for</strong>mation written by Brad Wightman and used by his kind permission.<br />

20. Disassemble the lower valve body in a similar way to the other two sections. If<br />

you have a transmission with lock up torque converter (AW70L, AW71L or<br />

AW72L) pay close attention to the signal valve and changeover valve. The<br />

changeover valve, in particular, has a couple of small orifices in it that can<br />

easily become blocked up. Blow them out with compressed air. Soak the valves<br />

and the valve body in your cleaning solution, blow dry with compressed air and<br />

you are ready to reassemble.<br />

21. Using your diagrams, digital camera pics or whatever method you used to help<br />

you remember where things go, reassemble the lower valve body. Do the<br />

underside first. Replace the check balls into their correct locations. Use new<br />

gaskets when replacing the covers and torque the covers to 3.5 - 4.5 ft lbs. (5 -<br />

6 Nm).<br />

22. Turn the valve body over and replace the parts taken out. When this is done<br />

you are ready to reassemble the valve body.<br />

23. Place the lower gasket on the lower valve body. Then place the separator plate<br />

on top of the gasket. See pic below.

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