Volvo RWD 444-544 Forum

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Overdrive, Dtype 444-544

posted by  122 and 940 and too many on  Sun Feb 3 23:30 CST 2002
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last visit: Mon Apr 25 13:12 CST 2011
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The seals are good and I've checked with a dial gauge that I haven't got lost motion in the operating rod/valve. All the valves are seating properly. The bore and piston aren't scored.

Originaly I was advised to slightly drop the pressure with the uprated cone clutch it uses. The reason being that with the more agressive clutch lining material the OD becomes clunky. I can cope with that though.

Your thoughts on pressure mirror my own. There are definitely 2 different housings. The one I have is weird. It runs full pressure all the time, swtch into overdrive and pressure drops like a stone to zero and very quickly builds back up again. Apparently you can tell the difference by the drillings adjacent to the 7/16th headed plug under which the operating rod lurks. there are different numbers of ball bearings pressed into the housing there. I must do some more research on that.


Regards

Pete






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New Overdrive, Dtype [444-544]
posted by  122 and 940 and too many  on Wed Jan 30 10:36 CST 2002 >


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