Some help please

[Nagzz4423 13]

I just bought my first tractor a 98 312-8 model and looking to replace the trans oil that is milky but don't know what type of oil. I also tried looking for owners manual and couldn't find it. I would greatly appreciate any help.

 

Thanks

[gwest_ca-(File Mod) 11,493]

Welcome to the forum.

 

Manuals

Lubrication chart

Garry

[Nagzz4423 13]

Thank you Garry I appreciate it.

[Pullstart 66,882]

Welcome to RedSquare!  Post some pics of your new ride

[KC9KAS 4,744]

@Nagzz4423 

I usually drain the milky fluid and put in some kerosene and drive around in all gears. Don't try to be a Cowboy, but use ALL  gears to get he fluid circulated.

Drain it and do it again. I do this at least 2 times, and sometimes I have to do it a 3rd time to get "clean" kerosene to drain out.

I let it drain overnight then I put the 80-90 gear lube in.

 

Make sure you have a good shifter boot or you may get water in the transmission again!

[Nagzz4423 13]

[JERSEYHAWG / Glenn 4,499]

Very nice 1st one, you'll see what I mean. Welcome to red square, thanks for sharing the pics.

 

Glenn

[Phatboy 565]

34 minutes ago, Nagzz4423 said:

I just bought my first tractor a 98 312-8 model and looking to replace the trans oil that is milky but don't know what type of oil. I also tried looking for owners manual and couldn't find it. I would greatly appreciate any help.

 

Thanks

Dont be alarmed in winter and you check oil again it is milky,, cast iron with changing tempuratures causes condensation when it changes rapidly,,and makes oil look milky,, dont be alarmed it is normal...in winter on  my 310-8 after plowing or whatever when i put back in the garage i would remove the dipstick to allow some of the moisture to dissipate,, which helped alot,,  

[Nagzz4423 13]

Thanks guys! I'm loving the tractor as well as my 2yr old son. It runs great just the trans oil need replacing as well as trying to find a new belt for the mowing deck. All your help and information is appreciated.

 

Greg

Edited April 14, 2016 by Nagzz4423

[AMC RULES 37,196]

If I were you...    

I'd start clearing out some more storage space.  

Be forewarned, these 's tend to multiply like rabbits.   

               

[Retired Wrencher 5,792]

Nagzz4423    What Gwest sent you is a very good start. If you handy with tools  and have a floor jack? I use kerosene in mine to flush out the old tranny oil. Drain old oil put in kerosene till it come out of filler hole. Jack up the rear so tires are just off the ground. start it up run for 10 minutes.  Drain/ then jack up front so that most of kerosene get out of housing. Been doing for a while now keeps everything clean. Enjoy the project.

[Nagzz4423 13]

What size torqued bit is on the trans drain plug? 55 or 60 torque?

[stevasaurus 23,281]

You just need to tighten it...it is a pipe thread and if the threads are clean...a good snug will work.

 

 

[Nagzz4423 13]

Looks like a torque bit?

[953 nut 60,110]

36 minutes ago, Nagzz4423 said:

What size torqued bit

   The drain plug should be an allen wrench plug, 3/8 I think, yours may have been worn a bit.  The point that @T1257 RETIRED WRENCHER. was making is very important, you will want to jack up the front while draining because there is a casting that goes from side to side in the Trans axle that will trap some of the old stuff if it isn't jacked up.

[TDF5G 2,073]

Do you mean torx bit?   I have older tractors and there are no torx head fasteners on them.  Sorry I can't tell you the size of it.

[KC9KAS 4,744]

55 minutes ago, Nagzz4423 said:

Looks like a torque bit?

I just checked one Sunday and it was a 1/4" pipe plug and takes a 1/4" Allen wrench.

[KC9KAS 4,744]

You may have to grab it with a "vise-grips"  to remove it and get a replacement, as it does look worn.

Edited April 21, 2016 by KC9KAS
spelling

[stevasaurus 23,281]

That does not look like the right plug.  Maybe use and easy-out and get that thing out of there.  Put in the right plug as was stated above.  Wire brush it first., hit it with a small punch that fits in the hole and then the easy-out if an Allen Wrench strips out. 

 

[KC9KAS 4,744]

@stevasaurus I think someone has just "wallered" out the corners.

Once it is out, a new replacement is a must!

[oliver2-44 10,738]

Welcome

Your 312-8 looks great hopeful that is an indication that it was well care for.  

I have a 1985 312-8 that I just refurbished.due prior neglect.  That tractor wil do everything you ask it to do, 

PS check that the transmission gear shift has a rubber boot on it to keep the water out when you wash & wax it.

Yes, after 20 years a horse that still looks that good deserves a little wax.  

[Retired Wrencher 5,792]

The reason I use Kerosene is. Some of you now this already I had a 606 one time it would not roll. After I got to run I ran it for about a 30` on stands that freed every thing up. been sold on this ever since then.  Enjoy the project.

[Don1977 605]

There is a hump in the bottom of the transmission where it is bolted together. To get all the oil out you will have to raise the front of the tractor.

[MWR 321]

16 hours ago, Nagzz4423 said:

What size torqued bit is on the trans drain plug? 55 or 60 torque?

 

16 hours ago, stevasaurus said:

You just need to tighten it...it is a pipe thread and if the threads are clean...a good snug will work.

 

 

Here is a rough description between me and a mechanic.  (I was 17 at the time)

 

Me:  "How tight do I need to tighten this bolt?"

 

Mechanic: "Tighten it until you wring it off, then back up 1/4 a turn."

 

Me: "Well, OK."

[Nagzz4423 13]

17 hours ago, TDF5G said:

Do you mean torx bit?   I have older tractors and there are no torx head fasteners on them.  Sorry I can't tell you the size of it.

Looks like a torque bit?

 

Thanks guys! I was able to remove the plug and drained the milky oil out overnight with the front end raised. Going to put some kerosene in it to flush it out all the way.