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-   -   Sm318 Transmission Plugs and Transfer case plugs (https://6066gmcclub.com/showthread.php?t=47735)

FetchMeAPepsi September 15th, 2013 02:45 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
Tommy, so these things that look like welded on nuts (cross cut in the center) are bolt heads instead? Or is my flywheel in backwards? :lolsmack:

http://windypix.com/?dm=KC84.jpg

tommyduncan September 15th, 2013 03:04 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
Quote:

Originally Posted by FetchMeAPepsi (Post 50294)
Tommy, so these things that look like welded on nuts (cross cut in the center) are bolt heads instead? Or is my flywheel in backwards? :lolsmack:

http://windypix.com/?dm=KC84.jpg

That's them!

Here are some not very good pics of mine in the mud. (It never rains here, except like crazy for the last month ...off and on).
http://i197.photobucket.com/albums/a...ps8227a36a.jpg
Engine stand is in the way but that is what it bolts to

http://i197.photobucket.com/albums/a...pscd21631e.jpg
Another picture for perspective

http://i197.photobucket.com/albums/a...ps4fa4488c.jpg

http://i197.photobucket.com/albums/a...ps3b909482.jpg
Dirty skungy bell housing... corrosion protection!

http://i197.photobucket.com/albums/a...psa7caf5c4.jpg
Another... the pic isn't upside down, the bell housing is!

About this time my dogs started barking, thinking I was the bellhousing bandit! Don't wanna wake up my sleeping beauty on a Sunday morning... Shhhh!

FetchMeAPepsi September 15th, 2013 08:10 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
I dunno Tommy. Mine have a hole where the bolt should be solid in the pic. See where it's cross cut? I think that's a nut and not a bolt head. I'm worried they're wrong-side out.

I took more pics of the innards today. Hopefully they'll narrow the problem down.

http://windypix.com/?dm=YNAA.jpg
http://windypix.com/?dm=Z7XR.jpg
http://windypix.com/?dm=39IJ.jpg
http://windypix.com/?dm=YCOX.jpg
http://windypix.com/?dm=SRS9.jpg
http://windypix.com/?dm=TQD1.jpg
http://windypix.com/?dm=BCE8.jpg

BarryGMC September 15th, 2013 08:53 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
Does. The input shaft move in and out ? In the first picture the clutch gear appears more forward also the inner race looks like it has some scoring on the front. Spray it down with some carb cleaner and put more light on it and post a pic. Also clean the inside of the bearing retainer and post a pic of the back.

BarryGMC September 15th, 2013 08:57 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
Those are the 6 flywheel bolts. They are not nuts.

tommyduncan September 15th, 2013 10:18 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
http://i197.photobucket.com/albums/a...ps10ebeb2c.jpg

FetchMeAPepsi September 16th, 2013 02:14 AM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
That's the craziest camouflaged bolts I've ever heard of!

Sorry for being hard-headed. it's the Scot in me. I'll get them suckers off:whipit: Kids were a handful today so I'll get more pics once the kids are gone tomorrow. :thumbsup:

raycow September 16th, 2013 06:58 AM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
If you are going to check the input shaft bearing for endplay, re-install the bearing retainer first. If you don't, you can pull the shaft out far enough to lose the needle bearings inside it, and you really don't want to have to re-install those.

Ray

FetchMeAPepsi September 17th, 2013 04:37 AM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
Thanks ray. I cant get it to move in any direction (up down side to side) except only a very tiny amount in and out, even that might be imagination it's so small

Here are a couple of pics of the race again. They still don't show the shiny surface well. it's smooth as a baby's butt inside. there are no scuffs, scratches, or anything on the outside either besides the texturing on the base where the screws go.

also theres black spots where I oversprayed with ospho. i'll get that polished off when I can work on it again. it comes off with a fingernail.

http://windypix.com/?dm=LH8J.jpg
http://windypix.com/?dm=3OD9.jpg

raycow September 17th, 2013 06:07 AM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
This last part you are depicting is the bearing retainer. The "races" are the grooved inner and outer rings in the ball bearing that the ***** run against.

Interesting - the censorship software allows one to say "ball", but not the plural.

Ray

FetchMeAPepsi September 17th, 2013 10:22 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
Quote:

Originally Posted by raycow (Post 50333)
This last part you are depicting is the bearing retainer. The "races" are the grooved inner and outer rings in the ball bearing that the ***** run against.

Interesting - the censorship software allows one to say "ball", but not the plural.

Ray

so the race is kinda like the "track" they roll around in..racetrack. makes sense now. Thanks!

I ordered the clutch plate and bearings again today. Hopefully they'll be here by Friday and i can start putting things back together. I'm hurtin for a ride in my baby :(

FetchMeAPepsi September 25th, 2013 01:38 AM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
I've started the rebuild but I'm having trouble with this part here. Those race things won't come off! :insane:

http://windypix.com/?dm=F7MR.jpg



Any idea how I get them off? My replacements are slick inside so I assume they're not screwed down or anything. I put them in a vice and beat on them but still they're in there pretty solid. :(

BarryGMC September 25th, 2013 03:11 AM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
You need a press to remove and install that bearing. The tools you need are a press and some plates bored to the proper diameters, or some split plates that get a good purchase on the bearing. Snap ring pliers are a must have also. You should find a service manual. The factory manuals are nice but MOTORS. Truck and diesel repair manual work well and give you the perspective of how common most of the old stuff is between makes. 21st to 24th editions cover these old rigs. You can buy these used online all day . Barry.

FetchMeAPepsi September 25th, 2013 03:51 AM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
Brother Barry to the rescue again! :yourock:

So there's nothing holding that race on but imagination and pressure right? I got the other one off that is deep inside the tranny tail with a little persuasion. That threaded collar thing that just sits above the rear bearing threw me for a loop. I twisted on that thing forever before I realized it was just mashed on :lolsmack:

I'm about ready for the writeup in my build thread. All I have left is that stupid race at the front. If I can figure out a way to get it off without a press I'll be golden. If not I might have to hire shop. The only press I have belongs to the wife and does Paninis.:yeeuh:

Back to work I go! I gotta finish before Friday. Inlaws are making a surprise visit at 8am :ahhhh:

FetchMeAPepsi September 25th, 2013 06:44 AM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
I got it all apart and back together save the little needle bearings. Those things are not well engineered. They should have put them in a race too IMHO.

Just hopped on here because it's 1am and I"m taking a break. My back is killin me from liftin that thing over and over trying to line it up! :lolsmack:

And I'm a little delirious.:crazy::guitar: Must have coffee....:morecoffee:

FetchMeAPepsi September 26th, 2013 06:33 AM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
Well today was a little better. I didn't pull the bottom gears out of the transmission, but I did change all the needle bearings, seals, and the two races. I couldn't figure out how to get the bottom of the tranny apart. I hope there's nothing in there that needs fiddling with.

I had a heck of a time getting the sliding collar thing (that has a second, thinner sliding collar thing on it) back on the tail section. Then tonight it just slid right in like buttah.

http://media.celebremix.com/5/mediaF...x/741/8110.jpg

FetchMeAPepsi September 26th, 2013 09:19 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
I went out today and started reassembly but the trans seems to be locked up. It "unlocks" when I unscrew the tailshaft bolts about 1/2 inch and crack the case again.
I can't tell what's binding it either. Here's a pic of my innards. Does anything look suspicious to you guys?

http://windypix.com/?dm=E86Z.jpg





The collar thing slides pretty easily all the way to the bottom of the tailshaft when it's out
:headscratch::headscratch::headscratch:
http://windypix.com/?dm=PV2P.jpg

Rockdriller September 27th, 2013 03:27 AM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
I am a bit turned around after this read.....I used to have a clue.....an' now I'm wondering if [I] do but maybe I don't.
Is it possible you mean the input shaft when yer saying tailshaft...?

Also....for the record....FYI....
When working with the needle brgs in the main shaft...if you clean everything up with brake cleaner or hot solvent....you can wipe some assembly grease or even brg. grease on the shaft and then stick the needle bearings to it. They'll stay right there while you put things together...and won't give you any trouble.
The flip side to that is to grease the other side (female side ) of the shaft and stick the needles in there....and then assemble...

Good luck,....

FetchMeAPepsi September 27th, 2013 01:52 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
Quote:

Originally Posted by Rockdriller (Post 50528)
I am a bit turned around after this read.....I used to have a clue.....an' now I'm wondering if [I] do but maybe I don't.
Is it possible you mean the input shaft when yer saying tailshaft...?

Also....for the record....FYI....
When working with the needle brgs in the main shaft...if you clean everything up with brake cleaner or hot solvent....you can wipe some assembly grease or even brg. grease on the shaft and then stick the needle bearings to it. They'll stay right there while you put things together...and won't give you any trouble.
The flip side to that is to grease the other side (female side ) of the shaft and stick the needles in there....and then assemble...

Good luck,....

That's possible. I don't know what anything is called really. I'm learning as I go. What I'm calling the tailshaft is the bolted on piece on the end of the transmission. It has five bolts and ends in a pointy bit with a seal on the end of it. The driveshaft goes into that.

I used bearing grease to stick the needles on the shaft. :) It worked pretty good.

raycow September 27th, 2013 02:46 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
I think you may have the transmission stuck in two gears at one time, which will lock up the entire gearset. The piece with 6 external splines and a thin ring at the front end is the 2-3 shift sleeve. GM calls it a clutch. The large gear which slides on the outside of the 2-3 sleeve is the low and reverse sliding gear.

Both parts appear to be all the way at the rear end of their travel, which puts you in 2nd and reverse at the same time. Slide the L&R gear forward so it is not touching any gears on its bottom side and see if that frees up the mainshaft. At that point you will still be in 2nd, so slide the 2-3 sleeve forward until it disengages from 2nd gear (2nd is the gear immediately to the rear of the 2-3 sleeve), which should put you in neutral.

Ray

Rockdriller September 27th, 2013 09:46 PM

Re: Sm318 Transmission Plugs and Transfer case plugs
 
Quote:

Originally Posted by raycow (Post 50532)
I think you may have the transmission stuck in two gears at one time, which will lock up the entire gearset. The piece with 6 external splines and a thin ring at the front end is the 2-3 shift sleeve. GM calls it a clutch. The large gear which slides on the outside of the 2-3 sleeve is the low and reverse sliding gear.

Both parts appear to be all the way at the rear end of their travel, which puts you in 2nd and reverse at the same time. Slide the L&R gear forward so it is not touching any gears on its bottom side and see if that frees up the mainshaft. At that point you will still be in 2nd, so slide the 2-3 sleeve forward until it disengages from 2nd gear (2nd is the gear immediately to the rear of the 2-3 sleeve), which should put you in neutral.

Ray

Good eye....


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