Comprehensive Guide to 5th Gen 4Runner Trans Service

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Man I was just researching this. Great vid and straight to the point.
Thanks!

I tend to watch YouTube when I’m bored instead of tv, I’ve seen a couple videos that I’ve watched and thought to myself no that’s not right, or it’s easier to just do it this way, or shut up get to the point lol. A lot of people seem to be intimidated by “sealed” transmission, personally I’ve dealt with them professionally for the batter part of 2 decades. It’s really simple and the process straight forward and logical once you understand the steps you need to take and why you need to do them.
 
The Warranty and Maintenance Guide does not recommend replacing the strainer and yet under special operating conditions, it recommends changing the fluid every 60,000 miles. I suspect the large surface area of the screen is designed to hold all of the larger particles shed over the life of the clutch pack and still allow sufficient fluid flow through the strainer. There are three (3) ways non-metallic material is captured, in the fluid, coating the pan and in the strainer. Perhaps back flushing the strainer with used ATF is an option. Overall, a very good video.
 
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Your warranty and maintenance guide also stops at 120,000 miles. If you want to change it... great. If you don’t want to change it... great.
 
Nice video, thank you for sharing. I do mine every 15k as well, but I usually start putting my check plug back on at the 16:29 mark in your video. If you notice the flow of the fluid changes as it has now crested the top of the "check valve". I was wondering why you waited longer to put the plug back in? Would love your thoughts. Thanks again for posting.
 
Nice video, thank you for sharing. I do mine every 15k as well, but I usually start putting my check plug back on at the 16:29 mark in your video. If you notice the flow of the fluid changes as it has now crested the top of the "check valve". I was wondering why you waited longer to put the plug back in? Would love your thoughts. Thanks again for posting.

Theres a temperature range for removing the check plug. As long as you’re around that range and the fluid slows to a trickle your good. Anything beyond that your talking minuscule differences in fluid capacity, especially when it’s a system that in total holds 11.3 qts of fluid.
 
Pretty good vid.
Factory manual says temp 1 needs to read between 104° and 113° if you want to be “by the book”.
Do you usually only do the one drain and fill per 15k?
 
Pretty good vid.
Factory manual says temp 1 needs to read between 104° and 113° if you want to be “by the book”.
Do you usually only do the one drain and fill per 15k?


Correct, 40-45 C is the official spec, that along with torque specs, process, pet numbers, are all in the description on the video.

I drain every 15K when I have the skids off to do the diffs.
 
The Warranty and Maintenance Guide does not recommend replacing the strainer and yet under special operating conditions, it recommends changing the fluid every 60,000 miles. I suspect the large surface area of the screen is designed to hold all of the larger particles shed over the life of the clutch pack and still allow sufficient fluid flow through the strainer. There are three (3) ways non-metallic material is captured, in the fluid, coating the pan and in the strainer. Perhaps back flushing the strainer with used ATF is an option. Overall, a very good video.

And magnets.
 
And magnets.

The video shows the amount of magnetic material captured by four (4) magnets widely spaced around the pan after ~135,000 miles.

Three (3) ways non-metallic material is captured in a sealed transmission are: (1) very fine particles remain suspended in the fluid, (2) some particles cling to the pan and strainer and (3) large particles that would bind in close clearances are captured by a large surface area strainer that is likely to hold a lot of material without significant flow restriction.

These are robust design details that contribute to legendary Toyota reliability.

I rarely incur special operating conditions, so I recently exchanged 12 quarts at 114,000 miles and didn't open the pan. As a result of watching the video, I'm planning to wait until 180,000 miles to inspect and back flush the strainer with used ATF, replace strainer o-ring, clean the magnets, clean the pan and change 12 quarts of fluid.

Incidentally, in 2012, a GM TSB recommended no external transmission fluid exchange, drain and fill only, which implies do not open the transmission pan. I find it very hard to agree with that recommendation for obvious reasons that have been thoroughly discussed on this forum (and moreover, I would never buy a GM product).
 
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The video shows the amount of magnetic material captured by four (4) magnets widely spaced around the pan after ~135,000 miles.

Three (3) ways non-metallic material is captured in a sealed transmission are: (1) very fine particles remain suspended in the fluid, (2) some particles cling to the pan and strainer and (3) large particles that would bind in close clearances are captured by a large surface area strainer that is likely to hold a lot of material without significant flow restriction.

These are robust design details that contribute to legendary Toyota reliability.

I rarely incur special operating conditions, so I recently exchanged 12 quarts at 114,000 miles and didn't open the pan. I'm planning to wait until 180,000 miles to inspect and back flush the strainer with used ATF, replace strainer o-ring, clean the magnets and pan.

Oh crap what a maroon I am. D'oh!
 
As a former master tech, I'd like to say good job on the tutorial. You remind me of a guy on here that was a tech at Audi IIRC. Just curious if it was you under a new handle?

You certainly don't have to confirm if my thought is correct. The member I'm thinking of knew what he was doing, too.
 
As a former master tech, I'd like to say good job on the tutorial. You remind me of a guy on here that was a tech at Audi IIRC. Just curious if it was you under a new handle?

You certainly don't have to confirm if my thought is correct. The member I'm thinking of knew what he was doing, too.

Audi Tech was my old username ;)

I was a shop foreman and a dual brand master for VW and Audi before leaving that world behind. Now I do quality testing and development of preproduction and prototype vehicles and technology.
 
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Audi Tech was my old username ;)

I was a shop foreman and a dual brand master for VW and Audi because leaving that world behind. Now I do quality testing and development of preproduction and prototype vehicles and technology.

Ahh yes, I recall the username now. Good to see someone with experience posting tutorials with good practices.
 
I wasn’t surprised to see the gasket list for $25 but a $63 filter got me a little. I’ve got a dealer I use that knocks about 20% off those prices but I think I’ll be on an extended interval for the filter change like DougR mentioned.
Looks like there’s a free shipping offer from Toyota Parts and Accessories - Official Online Store that ends tomorrow night. Guess I better make an order.
 
Amazing vid. Thank You!

My plan is to do this every 50K. Is that overkill. Should I just do a drain and fill every 50k? Mostly highway driving. Minimal towing occasion u-haul or boat.
 

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