I have mog 404 axles. I have installed pinion conversions in them and have ran them for about a year and half. Prob put 1000 road miles on them, 1 rock race and 10 trail rides. I was pulling it off the trailer the other day in -5 degree weather and the u-joint on the drive shaft broke. Well in replacing this I noticed I have a ton on pinion slope side to side. What can I do about this? Is it my pinion bearings? If so how do I change them?

any ideas

most pinion conversions i have seen the yoke has slop in it not the pinion bearings.
Is it the pinion bearings for sure?

Most pinion flange conversions are just a flange, seal and seal housing. To service your pinion bearings you will need to remove your third member... at least I think so. A buddy of mine has one sitting in his shop, I will try and get a look at it later today.

Do you have the locking ring installed between the housing and the pinion conversion?

That often gets forgotten, I forgot it myself when I first did my pinion conversions :D

Do you have the locking ring installed between the housing and the pinion conversion?

That often gets forgotten, I forgot it myself when I first did my pinion conversions :D

I do not have a locking ring. Didnt know that I was suppose to or even what or where you are talking about having one. My pinion conversion I just popped the old seal out and placed a new seal in then slid the pinion flange on and tightened the set screws. I will try and get some pictures post up. But i feel like when I go to move it around that the pinion gear is almost just free floating in there. I can move it a ton. By that I mean maybe a 1/4in side to side or up and down.

These were best pictures I could find. I will try and take some better pictures.

ok, I looked at my friends removed third. It looks to me like there are two spanner nuts which hold the pinion shaft tight to the bearings (on the input side). They appear to be unitized ball bearing assemblies so there should be no adjusting them. The pinion can be removed once you have removed the carrier from the third assembly.

Is there anything you could see that I could do to test it before removing the third. Would rather not have to break the axle all the way down to find out. Can you tighten those nuts by going in from the front of the pinion? Got any pictures

This is good thread to see some pictures.
http://pirate4x4.com/forum/showthread.php?t=881397&highlight=pinion

I suppose it would be possible to tighten the spanner nuts simply by removing the pinion conversion. Also, with the conversion removed you should be able to visually inspect the outer bearing set. It seems to me that adjusting the spanner nuts would not change anything but I don't see how it could make it worse either so it is worth a try.

I finally managed to grab a couple pics of the pinion locking ring.

This needs to be between the diff housing and the torque tube or pinion conversion seal housing to keep the pinion bearing outer assembly tight.

http://i16.photobucket.com/albums/b18/wendleburger/IMG_0188.jpg

http://i16.photobucket.com/albums/b18/wendleburger/IMG_0189.jpg

where do I go about getting one of these?

where do I go about getting one of these?

That's the hard part, they usually get thrown out when the axles are pulled from the truck :(

I don't have the real ones in my buggy, I just made up a couple smaller sections that pick up a couple of bolts and have tabs that fold into a couple of the castelations.
They are made out of 20-gauge or similar and work fine. There's no load on them, they just need to stop that fine thread from slowly backing out.

Here are some pictures I pulled off line. Im not sure if what I have a picture of it the same locking ring. The website I was looking at the piece appears to be on the other end of the torque tube. But I could be wrong. Here are some pictures to look at.
http://www.expedition-imports.com/product/4043530073/Lock.html

There is a company out of either Virgina or Texas (cant remember right now) that I have been ordering my parts from. They are about half the price of expedition imports.

Yep, part number 403 on the torque tube drawing.

Seeing as I am a CAD monkey for a living I really should draw one up so there is a DXF available for people to have them CNC cut?

There is a company out of either Virgina or Texas (cant remember right now) that I have been ordering my parts from. They are about half the price of expedition imports.

Do remember the name of the company yet?

down at KOH last week my buddy was noticing some some slop in the pinion conversion flange in the front diff. ill have to let him know about that part. he may not be running that part either.

Just came across a couple hundred in the warehouse. At $5.50 might not be worth the effort to cut your own.

http://www.expedition-imports.com/product/4043530073/Lock.html

BTW.....Who's that company way cheaper than EI? :D

Cheers,

Scott

If there is someone out there cheaper than E.I. then I didn't know that mogs used "JAP" parts. Cheers Scott!!!

Its 5.50how much do think sometime like that is going to cost? Bbbn

Its 5.50how much do think sometime like that is going to cost? Bbbn

good thread...did you solve your pinion slop problem?

I just noticed my conversion has slop in the flang. I tore it apart to see if it was the pinion gear, but it was tight with no movement. All in the flang.


Is this going to cause problems or get worse? Anyone try some type of shimming to tighten it up at all?