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From: Daniel on 24 Aug 2007 13:55
JM wrote:
> So is it worth dropping the pan ?
==
I have the '94 4 cyl. acquired with 80K miles (163k now) and some
seepage at the (incorrect) pan gasket so I had the gasket changed and
saw the fluid could have been a bit cleaner and there was some darker
coating on the inside of the pan. The mechanic cleaned the pan in a
solvent tank and installed a cork gasket.
Turned out later it leaked again, so I purchased the gasket from the
dealer. Now doing my own work I discovered two (2) stripped bolts.
Thankfully, I was able to purchase longer bolts from the dealer and
thread them through the case.
So be careful about tightening the bolts into the aluminum housing.
The torque figure is given in inch pounds. Use a criss cross
progressive pattern with several passes and a gentle touch.
However, if you've been changing the fluid regularly since new, it is
unlikely you'll gain any benefit from removing the pan.
I use all synthetic fluids, so that may make a difference, but every
time I've drained the fluid since, it comes out very clean so I never
intend to remove the pan again unless a leak were to develop and this
is the position taken by Toyota - only fluid drain is required.
I do change the fluid quite often though.
If you do remove the pan, do not use any type of cloth. Just clean the
inside with solvent (I used a spray can) and air dry. Even a tiny bit
of thread catching on the cast metal can cause operational problems
later.
If you're careful it is not difficult, just keep the rags out of
there.
Dropping the pan is messy but not difficult and may be nice to see the
condition.
I don't believe you need to touch the transmission screen - there is
no replaceable filter element. Yes you can replace the screen, but I
don't see the need unless you purchased the car second hand.

From: LUKE ANDREWS on 3 Sep 2007 05:06

"JM" <johnny(a)melvin.com> wrote in message
news:yQCzi.40714$pj4.5535(a)newsfet01.ams...
> Hi,
>
> As 90K miles is about to come up on my 1995 2.2 litre Auto Camry.
>
> I though instead of just doing a standard gearbox fluid change.
> I would also drop the pan and change out the filter/screen.
>
> Fluid has been changed circa each 18 to 20k miles during its life.
> I purchased it new.
>
> I just rang my main Toyota dealer to order a filter screen .
> But was told there is NO replacement filter/screen available as a
> replacement part.
> And that the fitted one is not a serviceable item.
> They do offer a gasket for the box.
>
> They had never heard of the pan been dropped,and the filter changed ever.
>
> I have read I am sure on many occasions in this group where this has been
> recommended.
> I have no box problems but though it would be a worth while thing to do in
> the 90k situation.
>
> So does the 2.2 lts auto not have this filter screen ?.
>
> Tks
>
> Johnny UK
>


From: LUKE ANDREWS on 3 Sep 2007 05:13
JM- I replaced the filter screen in my '88 Camry. I got it at an auto parts
store. I don't know why one wouldn't be available for a '95 Camry. BTW, the
filter was actually composed of metal screens, not filter pads like in my
Ford truck. It was not Fram, but a smaller brand. It was cheap too,
something like $11.00
"JM" <johnny(a)melvin.com> wrote in message
news:yQCzi.40714$pj4.5535(a)newsfet01.ams...
> Hi,
>
> As 90K miles is about to come up on my 1995 2.2 litre Auto Camry.
>
> I though instead of just doing a standard gearbox fluid change.
> I would also drop the pan and change out the filter/screen.
>
> Fluid has been changed circa each 18 to 20k miles during its life.
> I purchased it new.
>
> I just rang my main Toyota dealer to order a filter screen .
> But was told there is NO replacement filter/screen available as a
> replacement part.
> And that the fitted one is not a serviceable item.
> They do offer a gasket for the box.
>
> They had never heard of the pan been dropped,and the filter changed ever.
>
> I have read I am sure on many occasions in this group where this has been
> recommended.
> I have no box problems but though it would be a worth while thing to do in
> the 90k situation.
>
> So does the 2.2 lts auto not have this filter screen ?.
>
> Tks
>
> Johnny UK
>


From: johngdole on 4 Sep 2007 21:08
I don't know if the A140 series Aisin transmissions for the UK market
is any different. But if you look at the pictures in the Haynes repair
manual (available in your local auto parts stores?), you will be able
to see a flat, metal encased strainer with 3 bolts right in the middle
of the valve body.

If you do a search on the net, say a Fram ATF kit, you should be able
to see a picture of it. FRAM Part # FT1169 on www.rockauto.com for
example.

There will be a layer of clutch material, part of the normal wear and
tear (think of it as brake pad dust in the ATF, or it's equivalent)
and some metal shavings. Since there is no way you can effectively
clean an encased strainer, I just replace it. There just isn't enough
pressure and volume when you "rinse" the strainer with ATF, and fluid
takes the path of least resistance.

The Aisins are dirtier than the typical Hydramatic and Ford AOxD
series. But the latter ones have real filters that do their jobs. So
the "dirtiness" level is probably more subjective. I open up an Aisin
and say it's full of it, relatively speaking.

It would be nice if Aisin put a real filter on it. Why not? Because
the dirty Aisin will plug it up in no time. That's why Toyota is
working fruitlessly on the new WS (World Standard) fluid and a new
transmission with harder clutch material that doesn't excrete much in
the ATF. They're still working on it last I checked....




On Aug 24, 8:30 am, "JM" <joh...(a)melvin.com> wrote:
> Hi,
>
> As 90K miles is about to come up on my 1995 2.2 litre Auto Camry.
>
> I though instead of just doing a standard gearbox fluid change.
> I would also drop the pan and change out the filter/screen.
>
> Fluid has been changed circa each 18 to 20k miles during its life.
> I purchased it new.
>
> I just rang my main Toyota dealer to order a filter screen .
> But was told there is NO replacement filter/screen available as a
> replacement part.
> And that the fitted one is not a serviceable item.
> They do offer a gasket for the box.
>
> They had never heard of the pan been dropped,and the filter changed ever.
>
> I have read I am sure on many occasions in this group where this has been
> recommended.
> I have no box problems but though it would be a worth while thing to do in
> the 90k situation.
>
> So does the 2.2 lts auto not have this filter screen ?.
>
> Tks
>
> Johnny UK


From: Daniel on 6 Sep 2007 13:47
John,

I know you're often commenting about the dirt in the Toyota
transmissions.

johngd...(a)hotmail.com wrote:
>there is no way you can effectively
> clean an encased strainer,
==
I had a mechanic clean it in a solvent tank when I first acquired the
car with 80k mi., worked just fine. (I was afraid to work on the car
when I first bought it)
==
I open up an Aisin
> and say it's full of it, relatively speaking.
>
> It would be nice if Aisin put a real filter on it. Why not? Because
> the dirty Aisin will plug it up in no time.
==
Using Mobil 1 synthetic ATF, changed at 5,000 mile intervals with each
oil change, the fluid stays almost too clean so I'm going to 10,000
mile intervals.
When I've dropped the pan there is no "dirt" -- the interior is fresh
like new.
Running the ECT switch on PWR all the time may help it shift more
crisply with less slippage.
Point is, with the fluid that clean you don't need a new filter and
Toyota says the same in the service manual.
If the fluid isn't changed for long periods of time, then you have to
start over in getting the insides clean again. After I paid to have
the fluid exhanged the first time, I didn't want to have to do that
again, so I began draining it more often.
For my way of thinking, at roughly $6 per quart for synthetic,
overnight drain yielding apx. 3.5 qts., it costs me $21 for
transmission service. However, a new transmission runs thousands of
dollars, rebuilts are often filled with problems, and this way the
original operates like new virtually forever.
So in my own personal experience, the A140E transmission stays
exceptionally clean inside. Has 165,000 miles at present. I also add 8
ozs. of Lucas transmission fix as preventative maintenance with each
fluid change, so now maybe my cost is up to $25. If a new transmission
is $3,000, still sounds like a bargain to me.
My understanding is that heat degrades transmission fluid, that if it
is overheated once then the degradation progresses more rapidly, and
also the effect is magnified as the temperature rises incrementally.
Synthetic transmission fluid and synthetic motor oil are more
resistant to the oil breaking down at higher temperatures. However, I
keep the engine cooling system in perfect condition - that cooling
fluid is always like new also, so the tranmission cooler in the bottom
of the radiator is always operating at optimal efficiency and the
transmission never overheats.
Another key to long automatic transmission life is getting the fluid
level correct.
The factory service manual gives the temperature for checking, and I
have confirmed with a thermometer on the case, essentially it means
driving at least ten miles prior to checking the level to insure
normal operating temperature.
My other Toyota was manufactured thirty (30) years ago and still runs
fine to get parts when working on the Camry. Actually it runs great.
Elsewhere I referenced an article with photos about a guy who put one
million miles on his Toyota.
Having things paid in full takes a lot of stress out of life and makes
the maintenance costs with Toyota parts easy to justify, especially
when labor is free apart from the one time cost of acquiring the
correct tools.

Daniel

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