How to: drop, clean, and reinstall the 2nd Gen transmission pan and filter

As an alternative and I get the impression that you also like toys is the scangauge. You can see hundreds of things then I bought one for the need to know fluid temp when checking the fluid level on the 750 plus i have configured one screen to act as a trip computer with distance , miles to empty, liters remaining etc...

 

I just finished the second pan drop filter change in the last 3 weeks. First one was 4.1L from the pan/strainer, the one today was 4.3L.

Both A750F so not the same, but makes me think 6 from yours is quite a bit.

 

I would have thought the same, and really would have thought I was going crazy if I didn't see that other post elsewhere with the same issue and the word "madness" in the title.

I just checked it cold - it's exactly in the "cold" range on the stick. But it's going to be very hot this week...I'll drive in some traffic during that and check it hot after. We'll see...

 

Not sure if there has been a definitive answer yet, but my service manual states the drain plug should be 15 ft-lbs

 

That is the consensus

 

Everyone seems to agree on 15, but I’d be interested to know if the FSM has been corrected. The Haynes are great, but they’re not necessarily definitive.

 

Drain plug, torque is 15 ft lbs, if you do 21 ft lbs you are most likely strip the bolt. Don't ask how I know that.

 

I did this today.
When I did the overflow, it seemed like quite a lot flowed out.. But.. a little over 1/2 a bottle should have. I didn't measure it at the time. (1/2 a quart might seem like a lot, out that drain hole)
Drove home about 15 miles from where I was. Everything fine.

Tonight I'm thinking about it, and realize the oil is sucked up through the filter (vs draining through it). When I installed the filter, I didn't pop it into place first (which since then, I've read I'm supposed to do)... I just held it up and hand tightened the bolts. Then torqued them, and the input side definitely moved more.. As in, there was a little resistance and I assume I was slowly pushing the o-ring into the hole at the time. Then I tightened the other two bolts.

I'm just a little paranoid the first time I do any job like this. I'm concerned it didn't seal, isn't pumping, and too much fluid drained out.

If there is a problem like the transmission fluid isn't pumping any fluid, would I know from that 15 mile drive home? Would the truck have any warning lights or anything?

 

When you checked the overflow m, you did it with the engine running right?

 

Yes, engine was running.

And thinking about it more... It was heating up quickly. I was monitoring the pan temp w/ a heat gun. When I started the engine, it was about 90. Few minutes later it was about 105 and I started draining. When it was just trickling out, the temp was at 115. It's probably safe to assume it wouldn't be heating up that fast, if it wasn't flowing through the transmission. (But again.. I don't know for sure.. so am here posting )

 

The trans filter neck has a faux gasket right? I kind of remember it looking like a ribbed section of silicone or something.. almost like it was painted on.

I don't recall it taking a lot of force to seat the filter and if you had tightened the bolts then that probably would have seated it enough to get a seal on the neck.

But if this is going to keep you from sleeping at night, you can always drain the pan, drop the pan, and check. Capture the fluid in a clean bucket and it can be reused no problem.

 

Thanks. I think what I'll do just to feel a little better about it is... Do the overflow test again.. It should barely trickle. Then turn off the motor and open the overflow. It should gush out. Then replace what gushed out.

If a lot doesn't come out with the engine off, I'll know something is wrong.

 

Not sure I follow but if you end up dropping the pan, you're going to have to do the fluid level procedure anyway so overfill it by .5 to .75 quarts when you put everything back together.

Then get into temp check mode and once the light turns on, open the overflow bolt until the fluid comes out as a thin stream (or starts to trickle) and then call it good and bolt it up.

 

I think my test worked...
Since I had already done the level check, when I opened the overflow now with the engine running, but cold, nothing came out.
Then I turned off the engine. Opened the level check, and fluid came out.
That shows it is pumping fluid when the engine is started.

A couple tablespoons came out, at most, during this little test. I think it's probably fine w/out re-adding it.

 

I think I'd just check it one more time when it's warmed up, that ATF expands quite a bit. And by now you're probably getting pretty good at getting that level tube bolt loosened and snugged back down

 

He wanted to know if the system was picking up the fluid and cycling it throughout the transmission, he wasn’t worried about the level set.

 

One more question..
I decided to double check my filter (as discussed a few posts ago. Easy job compared to a new transmission.). It was fine..

But.. During the temperature check.. It's about 98 degrees outside. So.. I started the engine. The temp was already reading 105. I opened the drain plug assuming it will just drain more and more as it heats up.
Initially it poured out. A bit more than I expected. Then as it heats up, it suddenly stopped draining out. It was a steady stream, at at about 115, it just stops. Rocking the truck doesn't get any more drips to fall out.

That has me wondering if something happens at the set temp, where more fluid is pumped somewhere else, using up more of the fluid in the pan. And maybe I should have left the drain plug closed until it was hotter.

Does anyone know?

 

Refill it, redo the level procedure to get a trickle and then leave the damn thing alone man.

 

I basically did. I don't have a scan tool, so am using an IR thermometer.

I refilled it. But it was already at 115-120 by then. And, the same amount flowed out.

It's buttoned up, and I will NOT mess with it again!
thanks!

--I did the transfer case today, too, and that was super easy. No gray area or questions about that one!

 

115 is the max temp to check, the specified check temp is 97-115F for all 2nd gens with the A750 trans per TSB 0129-08
Service info was updated to reflect this on 09+ models.