Th400 no magnet in the pan ?

Stock FSJ Tech Area
Post Reply

Topic author
candymancan
Posts: 3684
Joined: Tue Mar 22, 2016 11:32 pm

Th400 no magnet in the pan ?

Post by candymancan »

Did these transmissions not have magnets in the pan lol.

Doing full fluid oil changes on my 76 J1p.. and the transmission pan has no magnet ? Thats new to me.. but ive never touched a th400.

Ill probably buy one and put it in there before i put it back together.. but thats weird to me.

And whats the fluid capacity refill ? I sware ive never seen so much trans fluid come out befire its like the whole thing dumped out.. Wondering if i even need to bother now with flushing outa the cooling line by running it and refilling. The fluid was orangish red though.. so probly never changed
1998 Jeep Grand Cherokee 5.9L Limited 219k
1998 Jeep Grand Cherokee 4.0 I6 laredo 430k
1990 Jeep Grand Wagoneer 155k
1976 Jeep J10.. 85k(repaired)
User avatar

1978J10REDWHITE
Posts: 263
Joined: Fri Nov 20, 2020 7:25 pm

Re: Th400 no magnet in the pan ?

Post by 1978J10REDWHITE »

The top elements in TH400 are the black clutch materials and aluminum, so magnets are not that helpful.
Just keep filter replaced is the best thing next to a GOOD high quality cooler. Definity a cool!!!
User avatar

Yeller
Posts: 1548
Joined: Thu Apr 01, 2021 7:54 am
Location: Rogers County Oklahoma

Re: Th400 no magnet in the pan ?

Post by Yeller »

Never seen one OEM in a 400. And I’ve seen a lot of them
The bus I ride is so short it is a yellow Smart Car full of squirrels, monkeys and clowns.

1970 J2500 Resto Mod
https://www.fsjnetwork.com/forum/viewt ... 12&t=21395

1974 Bronco “Broncno”
https://classicbroncos.com/forums/threa ... st-3411909

Topic author
candymancan
Posts: 3684
Joined: Tue Mar 22, 2016 11:32 pm

Re: Th400 no magnet in the pan ?

Post by candymancan »

I got a nice strong magnet set from autozone. For 1$ discounted getting rid of pile.

Super super strong. Rectangle shaoed.. so itll fit in a diff cover too.. think ill put the other one in the rear diff cover.. that thing had antiseize looking goop it was so neglected no magnet doesnt help
1998 Jeep Grand Cherokee 5.9L Limited 219k
1998 Jeep Grand Cherokee 4.0 I6 laredo 430k
1990 Jeep Grand Wagoneer 155k
1976 Jeep J10.. 85k(repaired)

Herk
Posts: 276
Joined: Mon Mar 25, 2013 8:14 pm
Location: Boise

Re: Th400 no magnet in the pan ?

Post by Herk »

The magnet was only in the 4 inch "deep" pan which wasn't available when Jeep bought these transmissions. Not sure what all vehicles had them, but I'm pretty sure 1st gen HMMWV's, CUCV's and probably 6.2L civilian trucks had them.
Post Reply