throwout bearing/detents

[bigpapajoe]

My dad and I are currently rebuilding my transmission, and we just pulled it yesterday. There are two problems/questions that came up this morning.

1) the detents. Whenever we shift into first gear and move from a stop, it pops out of gear and into neutral. We figured a rebuild would take care of this problem, but when we were looking at the transmission this morning we noticed this:



if you look at the detents, you will notice that they are bent upwards. Could this be the cause of the problem with first gear? if not, what else could this cause?

2) throwout bearing. The one we had in the car has 20,000 miles on it, and if you notice the picture there are two dimples on either side of the bearing. Should this be replaced or does it not matter?



Thanks!

[SpiderWebb]

Quote:

Originally Posted by bigpapajoe 2) throwout bearing. The one we had in the car has 20,000 miles on it, and if you notice the picture there are two dimples on either side of the bearing. Should this be replaced or does it not matter? Thanks!

[Joe Papa Sr]

OK, thanks webb. Yeah, given everything, I will (we will) replace.

[yvesmontreal]

1) the detent is there to hold the shiftrod in place. It looks like the bolt was loose, and the pressure from the ball and spring bent the retaining plate. This is very likely to be the source of the gearbox jumping out of 1st or 2nd.

2) the dimples are a result from wear at the clutch fork contact points. I don't think it's normal; I've never seen that on the few clutches I've taken out (I'm not a professional), even at 100,000 miles. The contact shoul dbe greased lightly, but even that doesn't explain so much wear.

Loose bolt + contact wear: is something vibrating like crazy?

[Geezer]

Joe,

Part of the problem is that it's almost impossible to get a socket on those hex head bolts. I just went down to Home Depot and got a couple of 6mm socket head(allen head) screws and used a little blue (not red) Loctite. That should keep the bolts from backing out.

BTW the detents don't keep the sliding collar from popping out of gear. The job of the detent is to position the shift fork and collar. The collar should stay in gear on it's own if it's in the right position and not warn out.

[Joe Papa Sr]

Quote:

Originally Posted by yvesmontreal 2) the dimples are a result from wear at the clutch fork contact points. I don't think it's normal; I've never seen that on the few clutches I've taken out (I'm not a professional), even at 100,000 miles. The contact shoul dbe greased lightly, but even that doesn't explain so much wear. Loose bolt + contact wear: is something vibrating like crazy?

[Joe Papa Sr]

Quote:

Originally Posted by Geezer Joe, Part of the problem is that it's almost impossible to get a socket on those hex head bolts. I just went down to Home Depot and got a couple of 6mm socket head(allen head) screws and used a little blue (not red) Loctite. That should keep the bolts from backing out. BTW the detents don't keep the sliding collar from popping out of gear. The job of the detent is to position the shift fork and collar. The collar should stay in gear on it's own if it's in the right position and not warn out.

[Geezer]

Joe,

The reason for using Blue is that it can be broken loose with normal tools. Whereas red, if applied properly, will require heat to break it loose.

[Joe Papa Sr]

Quote:

Originally Posted by Geezer Joe, The reason for using Blue is that it can be broken loose with normal tools. Whereas red, if applied properly, will require heat to break it loose.

[Geezer]

Quote:

Originally Posted by Joe Papa Sr Oh, sorry, I didnt mean to disagree with your tech advice....just misread. Ill get blue.

[Joe Papa Sr]

For that matter, Charlie, I guess shop manual also specifies "blue" loctite for other nuts/bolts around the casing, etc? Just want to confirm, as they use term "diring heldite", which I though was some ancient mid east civilization of the dark ages or something.....LOL!!

[yvesmontreal]

Quote:

Originally Posted by Geezer BTW the detents don't keep the sliding collar from popping out of gear. The job of the detent is to position the shift fork and collar. The collar should stay in gear on it's own if it's in the right position and not worn out.

[Joe Papa Sr]

Detents update: I am putting case back together, and noticed that the detent spring "tube" which gets inserted into the bore hole in the case will not go down all the way, as I show in my photo above (in 1st post). There is some sort of metal "junk" embedded near bottom of the bore, down almost where the steel ball would sit, preventing it from dropping down all the way. Should I just try to carefully drill it out to kind of ream the hole to original diameter, which would allow this spring "tube" to lay in there nicely, like the other 2?

Joe

[Tifosi]

Is it anything that could mabe be blown out with compressed air, or is it outright galled?

[Joe Papa Sr]

Quote:

Originally Posted by Tifosi Is it anything that could mabe be blown out with compressed air, or is it outright galled?