removing an M46.

[Gilfy]

So i am in the process of removing a m46 trans. it is unreasonably difficult.

any hints? i have it out enough where it will rotate, but it seems to be stuck where the splines go into the clutch disk. sigh.....

 

[Gilfy]

i forgot to mention that the engine is out of the car.

 

[mr.volvo]

Well, having the motor and transmission out and on the floor, is a huge help, for certain. First, spray a good, pinpoint stream penetrating lubricant, (PB Blaster=excellent) in the bellhousing, and as much on the input shaft and clutch as possible. Use a series of screwdrivers, and prybars as wedges, between the bellhousing and block, spread equally around the perimeter, and just work the two apart. It may be difficult, if it's stuck good, but this is going to be about the best method for you to get them apart. Good luck.

 

[Gilfy]

I've gotten them to the point where it is spinning freely, like i can spin the transmission 360 degrees on the input shaft. but that is where i am having the difficulty seperating them =(

 

[mr.volvo]

I've gotten them to the point where it is spinning freely, like i can spin the transmission 360 degrees on the input shaft. but that is where i am having the difficulty seperating them =(

It's because the input shaft is frozen-seized in the chutch splines. As I said before, the remedy is plenty of penetrating spray, and constant pressure applied with prybars or wedges. The worst case of this I ever ran up against, was on a 1951 model Farmall 140 series tractor. If you know anything about tractor construction, to access the clutch, you basiclly have to split the tractor in half, at the middle. This one was so bad, it took a 10 ton porta-power with hydraulic wedge, and a torch, to get the shaft to come out. Just keep at it, there is no shortcut or trick, other than the one I have already shared with you.

 

[Gilfy]

thanks for the info mate, i'll keep at it.

 

[dl242gt]

Usually it gets stuck in the pilot bearing. But if it's been sitting a long time it can also seize in the clutch splines. I usually try to wedge both sides at once. But definitely soak it with penetrating oil for awhile. That will help.

 

[Gilfy]

Usually it gets stuck in the pilot bearing. But if it's been sitting a long time it can also seize in the clutch splines. I usually try to wedge both sides at once. But definitely soak it with penetrating oil for awhile. That will help.

I think this is the case, as i can move the transmission up, down, left and right a good 4 inches.

wish i had some 2x4s and a prybar.....

stupid daylight savings time.

 

[Gilfy]

I am thinking i am going to try and unbolt the pressure-plate through the clutch fork hole. and undo it that way.

 

[lateferdinner]

I had this issue once but not as severe. When I finally did get them apart, I found the shift fork bolt had fallen out and the shift fork was tangled in a way that held them together. Odd thing was the even with that bolt missing everything worked fine prior to removal. Try yanking or pushing or ??? on the shift fork.....

 

[Texas240]

I am thinking i am going to try and unbolt the pressure-plate through the clutch fork hole. and undo it that way.

Good luck, that clutch for hole, ,more like square is pretty small. I recommend you go spend a few bucks on a pry bar and go at it like so

 

[John242Ti]

Yup, pry bar will be your best bet. Spray everything down with PB, then let it sit overnight, and go at it again.

-J

 

[John242Ti]

I had this issue once but not as severe. When I finally did get them apart, I found the shift fork bolt had fallen out and the shift fork was tangled in a way that held them together. Odd thing was the even with that bolt missing everything worked fine prior to removal. Try yanking or pushing or ??? on the shift fork.....

Ah, yes, the red '83 wagon. I remember when the bolt disappeared on that car. Was driving north from Kent into Renton on 84th Ave South, when it decided to go bye-bye.

-J

 

[Gilfy]

Ok so update. I got the trans seperated by undoing the pressureplate bolts. The pilot bearing was indeed the culprit. Moving it around so much made the edges of the clutch disc splines a bit sharp, so i'm going to try and resurface those.

The main reason I pulled it was to get the pressure plate flush all the way around. As it was It was, one of the alignment dowels was not letting the plate sit super flush on the flywheel.

It was flush at every other point, just not that one alignment dowel. I was inspecting it once I had gotten it off, and it seems it had bent at that one point. It sits flush everywhere else just not at that dowel.

Is this going to be a problem when I go to reinstall it?

Oh and I had to cut the pilot bearing off with an angle grinder. That was 12 bucks down the drain.

 

[dl242gt]

Make sure you aren't missing the retainer clip for the pilot bearing. I've had a couple of clutch jobs that when taken apart the clip was missing and the pilot bearing had been moving around back and forth on the input shaft. The retainer clip sits in a groove inside the crankshaft.

 

[Gilfy]

Do you guys think that the pressure plate will be ok to install even though it is not flush all the way around? It is only off at that one alignment dowel.