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[steve6367]

So after all my recent work which included a new radiator I thought I best top-up the ATF to replace that lost.

However I actually got around 1/2 pint out of it - rather black looking. Does having too much ATF in it cause any damage?

It does tend to thump when selecting D from N, which the other 2 AR25's here don't. I am tempted to have a go at an ATF change, but the only work area here is gravel / dirt and I am concerned about dust getting into the gearbox - should I be?

Has anyone every tried simply sucking out the old ATF through the fill hole?

Steve

[chrisgixer]

Thumping into gear is classic ATF change sypmptoms.

Really needs the sump off to check the sump contents. But there is a way of drawing out the fluid and pumping in the new stuff via the rubber oil line pipes to oil cooler with engine running. You can see them by the drivers side exhaust by the steering gear.

Not done it myself though.

[biggriffin]

You would do better,to drop the sumps,change or clean the filter, and blow all the old atf,out of the cooler.,

[chrisgixer]

Yes much better. But there is a way otherwise as well.

[hercules]

Yes much better. But there is a way otherwise as well.

bet Dbug would disagree 

[steve6367]

Well its very windy here today and so quite a lot of dust blowing around and I wanted to do something.

I can now say you can get 4.5L out by extracting it through the filler hole - gear change is better now but not perfect. I guess I now have about 50% new ATF and 50% old so if I can find a hard standing to do it on will have a go at dropping the sump or otherwise may just repeat the process.

At least the fact the change seems better from N to D gives me some confidence that the box is not US 

Steve

[steve6367]

Just how sensitive to dust are they? I read online that automatic transmissions should only be opened up in a clean workshop?

[chrisgixer]

Just how sensitive to dust are they? I read online that automatic transmissions would only be opened up in a clean workshop?

Your very right to be careful. You don't want grit in the fluid. Magnets won't catch it and any impurity could make a part stick. Solenoids, brake bands, clutches.

Fluid quality I key to auto box operation. As the thumping suggests.

[biggriffin]

Well its very windy here today and so quite a lot of dust blowing around and I wanted to do something.

I can now say you can get 4.5L out by extracting it through the filler hole - gear change is better now but not perfect. I guess I now have about 50% new ATF and 50% old so if I can find a hard standing to do it on will have a go at dropping the sump or otherwise may just repeat the process.

At least the fact the change seems better from N to D gives me some confidence that the box is not US 

Steve

Still 4L left in

[Webby the Bear]

I don't see anything wrong in sucking out the contents via the filler hole (would be a lot easier with a drain plug  ) and then refilling with the amount that came out.

Then run it up to temp. and then recheck the level.

As Chris says, I'm sure there's a device that will tie in to the cooler lines and you can suck it out that way (or pressure new fluid in that way...whatever).

As BG said there's going to be a load left in the TC (the other 4litres).

[Webby the Bear]

I don't see anything wrong in sucking out the contents via the filler hole (would be a lot easier with a drain plug  ) and then refilling with the amount that came out.

Then run it up to temp. and then recheck the level.

As Chris says, I'm sure there's a device that will tie in to the cooler lines and you can suck it out that way (or pressure new fluid in that way...whatever).

As BG said there's going to be a load left in the TC (the other 4litres).

...unlessof course anyone cares to disagree

[biggriffin]

I don't see anything wrong in sucking out the contents via the filler hole (would be a lot easier with a drain plug  ) and then refilling with the amount that came out.

Then run it up to temp. and then recheck the level.

As Chris says, I'm sure there's a device that will tie in to the cooler lines and you can suck it out that way (or pressure new fluid in that way...whatever).

As BG said there's going to be a load left in the TC (the other 4litres).

...unlessof course anyone cares to disagree

Because you don't get all of the atf out,hence dropping both sumps,and blowing cooler lines+cooler out.

[chrisgixer]

I don't see anything wrong in sucking out the contents via the filler hole (would be a lot easier with a drain plug  ) and then refilling with the amount that came out.

Then run it up to temp. and then recheck the level.

As Chris says, I'm sure there's a device that will tie in to the cooler lines and you can suck it out that way (or pressure new fluid in that way...whatever).

As BG said there's going to be a load left in the TC (the other 4litres).

...unlessof course anyone cares to disagree

Disagreed before your post young bear.

Same with engine oil changes. Drawing out the oil removes the oil, not the slurry in the sump.

Thumping into gear is classic ATF change sypmptoms.

Really needs the sump off to check the sump contents. But there is a way of drawing out the fluid and pumping in the new stuff via the rubber oil line pipes to oil cooler with engine running. You can see them by the drivers side exhaust by the steering gear.

Not done it myself though.

[Webby the Bear]

 

I suppose what I should've said was...

in this case you could drop the sump and check for / clean out the shit from pan and t'magnets. but in the case of someone wanting to ''change their oil'' as long as they do it on a regular basis then there's no issue there with that as a method of doing it.

the fact that the OP has found that, although not perfect, his shifts are better he at least has narrowed it down to the gearbox. so yeah, in this case, fluid change and filter and take it from there. 

[chrisgixer]

Filter is a bit of a myth. There's little point in changing it, as it's rarely got anything g in there it's for large particles. The magnet catches the fine stuff. If it has got bits in it, then there's much bigger issues. Like fitting another box.

Filter needs no kore than a wash out.