Well, this was supposed to be a 'how-to'

[oldschool90]

Hey all, I was planning a 'How-to' on fixing a fifth gear popping issue, but I can't figure out what's wrong with my transmission. I got the case off, and noticed both shaft nuts were a little loose, but I'm not sure they were THAT loose. And I don't see anything else obviously wrong. Just some wear. Maybe that in combination with the nuts being loose is causing it? I don't see anything wrong with the bearings, no excessive play, nothing really worn. Its kinda bumming me out. Anyway, here's some oics. Enjoy

 

 

Little bit of wear on the inside of the teeth:

 

 

 

And on the ouside of the other gear:

 

 

 

And on the fork:

 

 

 

I got a little hungry doing all this and I needed a snack:

 

 

Didn't taste to good though. (That's the gear right after the front input shaft bearing)

 

 

 

 

 

So what do you think guys?

[datzenmike]

That piece missing means a chunk of something got caught in between . Did you find any chunks in the oil or on the bumg magnet?

 

Put the adapter plate in a vice and lift up on the output shaft. Check for looseness in the bearing in the adapter plate/ If it looks ok do the same with the counter shaft just below it. A bad (loose) bearing can cause the shafts to move away from each other under load. Check the two front (large ) bearings too.

[oldschool90]

I'll get to that this afternoon. I didn't find anything in the magnet when I drained it this time except for that gray pasty stuff. But last time I did it i found this:

 

 

The odd thing Is, I cant find which bearing that big piece came off of.

[ggzilla]

Could that be from the shift rod keepers?

[datzenmike]

Check the counter bearing (shown) and the mainshaft bearing *just above it to the right) in the adapter plate. Check both sides.

 

 

This is a bad mainshaft bearing just forward of rev/5th gears in the adapter plate.

 

 

 

Take a look at the rear mainshaft bearing. It's out along the shaft, far right in the picture.

 

 

 

It fits the top hole in this picture. There is also a rear counter shaft bearing that rides in the lower hole in this tailshaft/

 

 

 

Front main and countershaft bearing should be checked.

 

 

 

Bad front countershaft bearing...

 

 

 

That piece sure looks like a piece of bearing spacer.

 

.

[oldschool90]

What should I be looking for in the bearings besides broken bits? And I looked at it yesterday and the shafts move side to side (^ --^(shaft)-- V) but not up and down

(V --^(shaft)-- V or ^ --^(shaft)-- ^).

 

And the assembly in this oic (on the front mainshaft) moves in and out with the input shaft about 1/4in. Is that normal?

 

 

 

And some oics of how loose the nuts were:

 

 

 

[ggzilla]

yes that's normal, it's the synchro.

 

You are looking for the right stuff:

* No broken bits

* No movement up/down (perpendicular to shaft)

[oldschool90]

Just out of curiosity, would this transmission fit my truck (z22)?

 

LINKY LINK

 

 

Edit: I found this post: OTHER LINKY LINK so if I did want to go with the above transmission, alls I'd have to do is swap bellhousings and mod the trans mount?

[metalmonkey47]

No, I don't think that dogleg will fit your truck. If I'm correct, the starters are at different locations. L vs. Z

[ggzilla]

You can swap the entire transmission case (aka front case). Just put your gears/adapter plate & rear housing on a Z-series case. There is no bellhousing per se.

 

L-series will fit Z-series but has the wrong tilt.

[datzenmike]

What should I be looking for in the bearings besides broken bits? And I looked at it yesterday and the shafts move side to side (^ --^(shaft)-- V) but not up and down

(V --^(shaft)-- V or ^ --^(shaft)-- ^).

 

And the assembly in this oic (on the front mainshaft) moves in and out with the input shaft about 1/4in. Is that normal?

 

 

That's the 4th 'gear' syncro. Check the bearing to the front for looseness or damage. It should spin freely but not wobble or move front or back. Same with the counter shaft bearing below it.

 

And some oics of how loose the nuts were:

 

 

 

 

See that little notch on the shaft? get a screwdriver and hammed the nut down just above it to prevent it backing off. Same with the bottom picture. Hammering the nut down into the dip is called staking it.

 

 

Also the insides of this tranny are rather rusty. Has it been sitting drained of oil or something?

_______________________________________________________________

 

 

 

This transmission is likely the wrong length for your truck besides the wrong bolt pattern. Measure the length of yours.. probably 31.5"

[oldschool90]

Check the bearing to the front for looseness or damage. It should spin freely but not wobble or move front or back. Same with the counter shaft bearing below it.

I took it to a mechanic yesterday and he said all the bearings were bad.

 

See that little notch on the shaft? get a screwdriver and hammed the nut down just above it to prevent it backing off. Same with the bottom picture. Hammering the nut down into the dip is called staking it.

Yep yep. I had planned on doing that when I started reassembling it just to be sure I wouldn't have to take it back off

 

Also the insides of this tranny are rather rusty. Has it been sitting drained of oil or something?

No it hasn't. Its had oil in it since we got he truck and I only drained it a few days ago. And even then its had a coating of oil on it.

 

This transmission is likely the wrong length for your truck besides the wrong bolt pattern. Measure the length of yours.. probably 31.5"

Went out and measured it last night.....31.5". Damn. Thought it'd be cool to have a dogleg. Oh well. Guess I'll be doing some research on what transmissions i can use and possibly lookin to buy another one.