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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 7.5<br />

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

940 Car: Page 1<br />

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

The valve body in the Aisin Warner 71L automatic transmission is a very complex<br />

piece of kit. Servicing this unit is not a job to be taken lightly. Go about it the wrong<br />

way and you could end up with costly repairs. Go about it the right way and the job is<br />

relatively simple albeit a bit challenging if it's your first time. Be<strong>for</strong>e even considering<br />

servicing the valve body there are some considerations: The <strong>Volvo</strong> Automatic<br />

Transmission service manual (TP 31642/1) is an absolute necessity. DON'T attempt<br />

this job without this manual. At a minimum, have the following parts on hand: Valve<br />

body gasket kit (5 gaskets), 5.5mm check balls (<strong>Volvo</strong> part number 1377746),<br />

transmission fluid, filter and filter gaskets (2), fluid pan gasket. See pics below.

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