IMO, messing with the tran pan is a big mistake. Just getting the fill tube off is a potential disaster.

And even if you do get the pan off, the refill just mixes about 2.5 quarts of new fluid with 5 quarts of old.

As for the filter screen, of the 3 or 4 I've seen before I stopped looking, all were as clean as new. And since Dec. 1990,Volvo has said it can be ignored (TSB 17106 below).

My vote goes to the flushing method covered in the FAQ, and the Bentley 240 manual—a complete fluid flush and replacement in ~ 45 minutes or less, with the car flat on the ground.

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originally posted by Gregg Shadduck on Thu Feb 10 08:06 EST 2005
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From the clumsy but economical "Popular Science" [who?!] CD collection of TSBs (technical service bulletins) from Volvo:

TSB 17106
Dec 1990

"ATF filter cleaning deleted"

for 200/700/900
for all those AW 70/70l/71/72L transmissions
and for ZFHP22
(Does NOT apply to BW*)

"It is NO LONGER REQUIRED [capitalized in original] to clean and inspect the Automatic Transmission Filter..." [The tiny filter screen, which you get at, of course, only with SUBSTANTIAL effort.]

Advised to still replace the ATF fluid at specified intervals, and to flush the transmission cooling system.

>>Wish: It would be grand to have 200/700/900 TSBs from 1975-1995 in a common and portable format, WITH concise notes. Easy to implement searches then. Some of the TSBs are GENUINELY VERY HELPFUL (see above). Others = remember to clean your plate.<<
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--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.