LC100 ATF Exchange from ATF Coolant Hose? (6 Viewers)

[ghong14]

Hi Mudders,

Thinking of doing an ATF fluid exchange for my 98 LX 470 that has 191K Miles.

I orginally planned to do 3-4 drains on the coolant, but 3-4 quarts at a time until i saw some interesting thread on a fluid exchange.

I saw some mudders mentioned how they tackled their ATF fluid exchange by using the ATF cooler hose. I think the heated ATF fluid gets pumped into the ATF cooler assembly through the inlet hose (marked in the RED | 9044517097) and leaves the outlet hose (in the GREEN 9044517103).

If this is the case, can I disconnect the inlet hose and connect a drain hose to the RED marked hose that is currently connected to the cooler? I saw some Mudders do the exchange from a plug under the alternator but this location seems to be much more easier to maneuver.

Thanks! Hoping to get this down before 7/4.

 

[ghong14]

 

[kravman4]

Hi Mudders,

Thinking of doing an ATF fluid exchange for my 98 LX 470 that has 191K Miles.

I orginally planned to do 3-4 drains on the coolant, but 3-4 quarts at a time until i saw some interesting thread on a fluid exchange.

I saw some mudders mentioned how they tackled their ATF fluid exchange by using the ATF cooler hose. I think the heated ATF fluid gets pumped into the ATF cooler assembly through the inlet hose (marked in the RED | 9044517097) and leaves the outlet hose (in the GREEN 9044517103).

If this is the case, can I disconnect the inlet hose and connect a drain hose to the RED marked hose that is currently connected to the cooler? I saw some Mudders do the exchange from a plug under the alternator but this location seems to be much more easier to maneuver.

Thanks! Hoping to get this down before 7/4.

View attachment 3933459

This is exactly how I was taught to do a flush ages ago from Dale Coppedge over at Palomar Community College. Good memories. Did the service on my ‘01 Tacoma and had many years of good service to follow!

 

[ghong14]

This is exactly how I was taught to do a flush ages ago from Dale Coppedge over at Palomar Community College. Good memories. Did the service on my ‘01 Tacoma and had many years of good service to follow!

So using the coolant hose marked in red makes sense?

 

[kravman4]

So using the coolant hose marked in red makes sense?

I haven’t done it on my Cruiser yet so I won’t comment either way, but we hooked up the inlet to a primed line and reservoir and put the outlet in a bucket and ran it until the fluid changed color at the outlet. The way the guy did it in the video works, but doing it slowly like he did it let the old and new stuff mix with all the starting and stopping.

 

[ghong14]

A

I haven’t done it on my Cruiser yet so I won’t comment either way, but we hooked up the inlet to a primed line and reservoir and put the outlet in a bucket and ran it until the fluid changed color at the outlet. The way the guy did it in the video works, but doing it slowly like he did it let the old and new stuff mix with all the starting and stopping.

what I have heard is that the intake and outlaw rate are different. How did your solve for that in your reservoir

 

[ghong14]

Comparing a photo of my hose with that of the diagram.

 

[kravman4]

A

what I have heard is that the intake and outlaw rate are different. How did your solve for that in your reservoir

The outlet was just dumping into a bucket. We used an extension to keep the inlet flowing with fresh fluid until we saw it flushing out the outlet. This was on a Tacoma mind you, but don’t see why it wouldn’t work with an LC.

 

[ghong14]

For the inlet, you just did a primed line directly plugged into a jug of fresh ATF fluid?

 

[kravman4]

For the inlet, you just did a primed line directly plugged into a jug of fresh ATF fluid?

Yep, as best I recall. I can’t remember how we extended the hoses but it was a simple process. Old fluid flushes into a bucket and new fluid sucked up into system.

You definitely don’t want her introduce air bubbles into your transmission so you want to make sure the line was primed and all that…