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ATF change   2003-04-23 15:32:00 <Marc Archbold>

Im about to change the ATF fluid in my JZA70, just brought a 4L pack of the
genuine T-4 fluid from Toyota.
From memory changing the ATF fluid drains only a small portion of the fluid.
Is there anyway (without ATM removal/dismantling) to replace 4L?

Suggestions greatfully accepted.

Cheers,
Marc

Reply

Re: ATF change   2003-04-23 19:16:00 <J Walker>
Unless you pull the trans and drain the TC and the hydraulics then you can't get a completely 'fresh' change, unless you have a transmission flushing device, that attaches to the trans cooler lines and flushes all the crap out of the trans with fresh fluid.
----- Original Message -----
From: Marc Archbold
To: Supra Club of NZ Mailing List
Sent: Wednesday, April 23, 2003 3:29 PM
Subject: [sconz] ATF change



Im about to change the ATF fluid in my JZA70, just brought a 4L pack of the
genuine T-4 fluid from Toyota.
From memory changing the ATF fluid drains only a small portion of the fluid.
Is there anyway (without ATM removal/dismantling) to replace 4L?

Suggestions greatfully accepted.

Cheers,
Marc


---
Supra Club of New Zealand
http://www.supras.org.nz/

(html version)
Reply

Re: ATF change   2003-04-24 12:15:00 <Peter O>
Good advice.
Because of this I generally have an expert do my fluid change & insist on
"the flush".
The flush device is a specialised aerosol & with a bit of experience (&
initial over the shoulder help) any one should be able to do this.
Don't discount it's importance this is about the only way of ensuring a
blockage free passage to the tranni fluid cooler.
Hope someone who has mastered this can offer more practical comment.

Peter O
---------------------------------------------------------------------
-----Original Message-----
From: bounce-sconz-200@supras.org.nz
[mailto:bounce-sconz-200@supras.org.nz]On Behalf Of J Walker
Sent: Wednesday, 23 April 2003 7:13 p.m.
To: Supra Club of NZ Mailing List
Subject: [sconz] Re: ATF change


Unless you pull the trans and drain the TC and the hydraulics then you
can't get a completely 'fresh' change, unless you have a transmission
flushing device, that attaches to the trans cooler lines and flushes all the
crap out of the trans with fresh fluid.
----- Original Message -----
From: Marc Archbold
To: Supra Club of NZ Mailing List
Sent: Wednesday, April 23, 2003 3:29 PM
Subject: [sconz] ATF change



Im about to change the ATF fluid in my JZA70, just brought a 4L pack of
the
genuine T-4 fluid from Toyota.
From memory changing the ATF fluid drains only a small portion of the
fluid.
Is there anyway (without ATM removal/dismantling) to replace 4L?

Suggestions greatfully accepted.

Cheers,
Marc


---
Supra Club of New Zealand
http://www.supras.org.nz/

---
Supra Club of New Zealand
http://www.supras.org.nz/

(html version)
Reply

Re: ATF change   2003-04-24 13:08:00 <Stu & Suze>
There is away to set up your own flush system if you want to do your own, its a bit of messing about in the short term but once put together, its always there if you want it.

it simply involves a container for the clean trans fluid, an oil filter (new) and of good quality with fittings a remote type unit is ideal, some hoses of appropriate size, a container for the old fluid and a small amount of compressed air.
In simple terms you hook up the hoses and filter in a way as to make a reticulating feed system with a filter in line, then use the compassed air to drive it.

By then disconnecting the input line from the trans to the trans cooler and hooking your system in line, ensuring you get input and out put correct you can then flush the system.
We made one of these years ago at a place I worked and it worked very well.
The biggest problem is making sure all lines and containers are sealed, and you only need fairly low air pressure, but it needs to be reasonably constant, a small or regulated compressor is ideal.


The commercial systems are just a big version of this in a fancy wheel around housing, with there own built in pump You could use a pump but compressed air is often more convenient as most work shops have it and good high viscosity liquid pumps can be expensive.

If anyone wants to make one im happy to help, maybe we could make a club unit and charge $5 to use it, to recover the cost of building it.
Just a thought.
cheers
Stu G
----- Original Message -----
From: Peter O
To: Supra Club of NZ Mailing List
Sent: Thursday, April 24, 2003 12:12 PM
Subject: [sconz] Re: ATF change


Good advice.
Because of this I generally have an expert do my fluid change & insist on "the flush".
The flush device is a specialised aerosol & with a bit of experience (& initial over the shoulder help) any one should be able to do this.
Don't discount it's importance this is about the only way of ensuring a blockage free passage to the tranni fluid cooler.
Hope someone who has mastered this can offer more practical comment.

Peter O
---------------------------------------------------------------------
-----Original Message-----
From: bounce-sconz-200@supras.org.nz [mailto:bounce-sconz-200@supras.org.nz]On Behalf Of J Walker
Sent: Wednesday, 23 April 2003 7:13 p.m.
To: Supra Club of NZ Mailing List
Subject: [sconz] Re: ATF change


Unless you pull the trans and drain the TC and the hydraulics then you can't get a completely 'fresh' change, unless you have a transmission flushing device, that attaches to the trans cooler lines and flushes all the crap out of the trans with fresh fluid.
----- Original Message -----
From: Marc Archbold
To: Supra Club of NZ Mailing List
Sent: Wednesday, April 23, 2003 3:29 PM
Subject: [sconz] ATF change



Im about to change the ATF fluid in my JZA70, just brought a 4L pack of the
genuine T-4 fluid from Toyota.
From memory changing the ATF fluid drains only a small portion of the fluid.
Is there anyway (without ATM removal/dismantling) to replace 4L?

Suggestions greatfully accepted.

Cheers,
Marc


---
Supra Club of New Zealand
http://www.supras.org.nz/

---
Supra Club of New Zealand
http://www.supras.org.nz/
---
Supra Club of New Zealand
http://www.supras.org.nz/

(html version)
Reply

Re: ATF change   2003-04-24 13:38:00 <Stuart>
On Thu, 24 Apr 2003 13:03, you wrote:
> There is away to set up your own flush system if you want to do your own,
> its a bit of messing about in the short term but once put together, its
> always there if you want it.
>
> it simply involves a container for the clean trans fluid, an oil filter
> (new) and of good quality with fittings a remote type unit is ideal, some
> hoses of appropriate size, a container for the old fluid and a small amount
> of compressed air. In simple terms you hook up the hoses and filter in a
> way as to make a reticulating feed system with a filter in line, then use
> the compassed air to drive it.
>
> By then disconnecting the input line from the trans to the trans cooler and
> hooking your system in line, ensuring you get input and out put correct
> you can then flush the system. We made one of these years ago at a place I
> worked and it worked very well. The biggest problem is making sure all
> lines and containers are sealed, and you only need fairly low air pressure,
> but it needs to be reasonably constant, a small or regulated compressor is
> ideal.
>
>
> The commercial systems are just a big version of this in a fancy wheel
> around housing, with there own built in pump You could use a pump but
> compressed air is often more convenient as most work shops have it and good
> high viscosity liquid pumps can be expensive.
>
> If anyone wants to make one im happy to help, maybe we could make a club
> unit and charge $5 to use it, to recover the cost of building it. Just a
> thought.

Unfortunately, while this can get MORE of the fluid, it still does not clean
out the torque converter, where about 1/2 the fluid lives.

A normal sump drain removes under 1 litre from memory, a clean fill (I know, I
just did one) takes over 6 liters of fluid, and a lot of that lives in places
that need centrifical force to remove, like the pump and the torque
converter, this will only be removed with a stripdown or with the engine
running and in gear...

Then again, ATF lasts VERY well, and with the correct filter changes (a lot of
people NEVER change the filter!) you only NEED to change 1 litre at a time.

Stuart W.
Reply

Re: ATF change   2003-04-24 14:35:00 <Stu & Suze>
What you say is true Stu the TC is always going to be the bug in the oil,
when it come to draining and flushing.
Some of the realy expensive units around now Ii beleive are desighned to
work with the engine running and the trans in gear with the drive wheels off
the ground of course.
cheers
Stu G
----- Original Message -----
From: "Stuart" <stuartw@kcbbs.gen.nz>
To: "Supra Club of NZ Mailing List" <sconz@supras.org.nz>
Sent: Thursday, April 24, 2003 1:35 PM
Subject: [sconz] Re: ATF change


> On Thu, 24 Apr 2003 13:03, you wrote:
> > There is away to set up your own flush system if you want to do your
own,
> > its a bit of messing about in the short term but once put together, its
> > always there if you want it.
> >
> > it simply involves a container for the clean trans fluid, an oil filter
> > (new) and of good quality with fittings a remote type unit is ideal,
some
> > hoses of appropriate size, a container for the old fluid and a small
amount
> > of compressed air. In simple terms you hook up the hoses and filter in a
> > way as to make a reticulating feed system with a filter in line, then
use
> > the compassed air to drive it.
> >
> > By then disconnecting the input line from the trans to the trans cooler
and
> > hooking your system in line, ensuring you get input and out put correct
> > you can then flush the system. We made one of these years ago at a place
I
> > worked and it worked very well. The biggest problem is making sure all
> > lines and containers are sealed, and you only need fairly low air
pressure,
> > but it needs to be reasonably constant, a small or regulated compressor
is
> > ideal.
> >
> >
> > The commercial systems are just a big version of this in a fancy wheel
> > around housing, with there own built in pump You could use a pump but
> > compressed air is often more convenient as most work shops have it and
good
> > high viscosity liquid pumps can be expensive.
> >
> > If anyone wants to make one im happy to help, maybe we could make a club
> > unit and charge $5 to use it, to recover the cost of building it. Just a
> > thought.
>
> Unfortunately, while this can get MORE of the fluid, it still does not
clean
> out the torque converter, where about 1/2 the fluid lives.
>
> A normal sump drain removes under 1 litre from memory, a clean fill (I
know, I
> just did one) takes over 6 liters of fluid, and a lot of that lives in
places
> that need centrifical force to remove, like the pump and the torque
> converter, this will only be removed with a stripdown or with the engine
> running and in gear...
>
> Then again, ATF lasts VERY well, and with the correct filter changes (a
lot of
> people NEVER change the filter!) you only NEED to change 1 litre at a
time.
>
> Stuart W.
>
> ---
> Supra Club of New Zealand
> http://www.supras.org.nz/
>


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