gearbox oil

[mightyterc]

Hey all.
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Ok, i know this sounds dumb, but i just want to make sure that it is the front bolt on the gearbox that drains the g/box oil. theres another one a bit further back and i assume that that is for the transfer box??

Also im assuming the the bolt to refil the g/box is just up on the side somewhere??? i dont have a squeezy bottle to refil it so i just got a funnell with a hose that im gonna poke down past the shifter and down to the hole.

cheers

[Petros]

Not so dumb. There are I think three drain plugs, and at least two filler plugs in the transaxle/transfer case assembly. I think I burned up a trans because of this, I had assumed that since the inner compartments are inner connected that filling from the highest filler would fill all of the compartments. It appears this was not so. It may have been a coincidence the trans died within a year of draining the oil and replacing it (it did have a lot of miles on it), it is just that I could only find about a quart of gear oil in it after it died. Now I would pull every plug, and fill each compartment until oil drains out each of the filler plugs.

I still have the trashed trans sitting around in my garage, if I remember I will look it over tonight and find the location of all of the fillers plugs and post it tomorrow.

BTW, you can fill the trans and front diff from the engine compartment with a long flex tub you feed down past the steering shaft and fire wall.

[ARCHINSTL]

This is an invaluable link; and most of the time better than the FSM:
http://www.autozone.com/servlet/UiBroke ... 1b94ee.jsp
Tom M.
P.S. 3 each on filler and drain plugs for 4WDs. Nice info on the link.

[kamiphloj]

Per previous suggestions,there is a specific procedure to drain/fill the tranny.
you will need to remove 3 drain plugs and three fill plugs.
The fill plugs take a 24 mm wrench.the head of the fill plug is aluminum,soft,and very thin.
The common box end wrench has a tapered,rounded entry to make it easy to slip on to a hex.
The problem is,this lead in does nothing to help grip the thin hex.It cams the wrench off the plug and rounds the corners.
Solution,buy an inexpensive 24 mm box end wrench and grind one side of it so the lead in is gone,just square,sharp 12 point to engage the full height of the hex.
Good luck,kamiphloj

[ARCHINSTL]

I can heartily endorse kamiphloj's recommendation on grinding the chamfer of the box end. It works!
See: viewtopic.php?t=2160
Tom M.

[keith]

Am I the only one who read the FSM, you don't remove the rear most bolt, only loosen it 6 turns. You are supposed to fill only from the rear filler hole, but with all plugs out and the rear most "drain" still out 6 turns. I have never gotten that method to fill the front section for some reason. When the oil starts dripping from the center fill plug, I stop and put in the rear and center plugs, then fill the front section separately. Then I screw in the rear plug.

[ARCHINSTL]

Actually, you are not the only one.
I opened (removed) all 3 drain plugs, as that seemed logical. I let them drain all night. I installed the front two tightly and the rearmost as well, but then loosened it the recommended 7-8 turns.
Then I filled with 4+ quarts from the front filler plug; I was unable to get the "correct" plug open - until I used kamiphloj's method. By then, I had already filled the thing.
There seems to be no problem, and that was 9+ months ago.
Next time, I will be able to remove the rearmost filler plug...
Tom M.

[mightyterc]

righto cheers

but im still confused. if its not 2 much trouble can someone take some pics? or even put up a post in the repair guide section on changine g/box oil with pics? like step by step style.

that would be mint.

thanks guys

luke

[mightyterc]

k i went on that site, i should be ok

[Typrus]

Everything is tied together in the 6-speed. Auto not so much. Auto takes gear lube for the diff and ATF elsewise.
I drain from all 3 after AFTER making sure the filler plugs will loosen. Sometimes a little heat is all it takes (soldering torch for a little bit, not red hot as you'll ruin the alu., just enough to melt the glop blocking it)
I did mine 2 years ago following FSM rules. And I used Wally-world cheap crap hoping to drain it within a few months, just to let the cheap stuff clean it out. I need to get the Schaeffer's in there as my synchros are dying (BTW, Autozone sells a reman kit for the 6-speed, with or without synchros) Autozone does sell complete auto and manual trannies for us BTW.

[Mac]

Am I the only one who read the FSM, you don't remove the rear most bolt, only loosen it 6 turns. You are supposed to fill only from the rear filler hole, but with all plugs out and the rear most "drain" still out 6 turns. I have never gotten that method to fill the front section for some reason. When the oil starts dripping from the center fill plug, I stop and put in the rear and center plugs, then fill the front section separately. Then I screw in the rear plug.

bingo, i filled my transmission from each hole starting from the front and working my way to the back, I wanted to make sure it wasn't low on oil like the last time.

[mightyterc]

so why do you need to loosen the rear drain plug 6 turns??? wont the oil just drain out when you start to refill it?? And filling it, i now am guessing that you take off all 3 filler plugs, and fill them from the front --> back. replacing the plugs as you go??

guys sorry if i sound like a deadbeat, but i just don't want to stuff it up

[keith]

I don't know why, but the FSM says 7-8 turns so thats what I did. It says to fill rear to front, but I don't know if that matters, you definitely want the oil to fill all three sections though

[Typrus]

It has to do with capacity or flow I believe when filling.

Ummm.... Once again, at risk that I sounds like an ass... Am I some special case in that filling from only the center seemed to have filled all 3 when I drained all 3? It worked plenty fine for me. Dunno why it wouldn't work for anyone else.

[mightyterc]

it seems logical to me to remove the rearmost filler plug, remove the front drain plug, let the oil drain, put the drain plug back in, and the fill it up the the rear filler hole. Does that sound logical to anyone else? I just want 2 know why i cant do it that way ha.