Topic: Triple Tree Help new bearings -Solved

[briancwynn]

Taking apart the triple tree as I got new All Balls bearing set as recommended by the Forum. Does this rubber and metal base on the bottom come off or do I leave it on?   It does not want to come off easy and I am not going to force it off and mess it up.   

[Dunk]

Yes that is the lower bearing race. I sliced mine most of the way with a cutoff wheel then whacked it with a chisel to split it. Came off easy after that. Then install new lower bearing. I believe there is a spacer you must install and your kit may have come with a seal too that goes below the bearing.

[briancwynn]

 

Yes that is the lower bearing race. I sliced mine most of the way with a cutoff wheel then whacked it with a chisel to split it. Came off easy after that. Then install new lower bearing. I believe there is a spacer you must install and your kit may have come with a seal too that goes below the bearing.

Thanks Cadunkle - I don't have a chisel so I am going to try knock er loose and hope that works.   

[briancwynn]

Thank you Calj! Freezing it now.

[bjbuchanan]

Put the nut on the top of the stem, or tape if it is still shiny chrome. If you take a larger screwdriver and tap back and for 180deg apart it will come down. I wedge in between the seal and race so to not ding up the stem

[Dunk]

Also, check/adjust the new tapered bearings at about 500 miles. Had 500 miles on the odo this AM and put about 125 on it today and at one point it tried a little head shake on me, just a little shimmy and done but scared the crap out of me as I went down in a tank slapper before. Tightened up 1/8 turn easily then a little more for preload. I'll check it again in another 500 miles or so but it's good to at least give any new bearings an earlier than normal inspection/adjustment interval as they may wear in a little.

[briancwynn]

Soooo, nothing is working at this time and getting scared. If someone says you cant teach stupid.. Its on!!!  Any who I put it in the freezer, I put knock er loose on it. I purchased a dremel just to try and cut the thing. Let me know what I should do at this point as I am worried I am going to mess it up.  Thanks all for the help.

[Stev-o]

Buy a chisel and a big Effin hammer!

[briancwynn]

That worked!  lol thank you.

[Stev-o]

Have you read the tapered bearing thread for install?

[briancwynn]

Nope, I saw a video that is on youtube that included putting the race into the freezer. I will look for the thread!   Thank you Steve-O .

[Stev-o]

Nope, I saw a video that is on youtube that included putting the race into the freezer. I will look for the thread!   Thank you Steve-O .

Here....

http://forums.sohc4.net/index.php?topic=1516.0;nowap

[briancwynn]

Wow.. that's a lot to take in.  Are they saying this does not go back together and I need to fabricate a new part or this is only for some bikes?  You don't have to answer but I will start reading this in deeper detail as I should be working now! 

Thanks all.

[Stev-o]

Wow.. that's a lot to take in.  Are they saying this does not go back together and I need to fabricate a new part

no

[70CB750]

Wow.. that's a lot to take in.  Are they saying this does not go back together and I need to fabricate a new part or this is only for some bikes?  You don't have to answer but I will start reading this in deeper detail as I should be working now! 

Thanks all.

Back together as getting new head bearings on the triple tree? Just take your time and you will be fine. Use the old race, piece of pipe and hammer to drive the inner race back on - in this order. The old race is to protect the new ring from getting damaged.

I was bored once and calculated the dimensional change in bearing cooling or heating and ever since I dont bother to cool or heat bearings. The difference in diameter is so small that it makes zero sense. Clean and polish the surface, much better use your time than abusing wife's oven or freezer

I tapped on a bearing for the input shaft of np435 transmission without heating/cooling too and that is a much bigger job than steering head on a motorcycle.

[Stev-o]

+1 - I did not use the oven or freezer, not necessary.

[seanbarney41]

I have done this job 5 or 6 times on sohc4's and have never had to freeze or cook anything...although it might make things slightly easier.  Caduncle's got it right, if you adjsut the new bearings according to the factory service manual, they will loosen up quickly.

[briancwynn]

Thanks all! How do you pack them with grease and what type?

[70CB750]

Thanks all! How do you pack them with grease and what type?

Any grease will do, I usually use moly because I always have some.  Here is a good how to:

Hand Packing a Bearing

[briancwynn]

Thank you. This is perfect

[briancwynn]

All the triple tree came out great.  Now on to removing the engine to paint the frame.
Thanks all for the help super appreciated.

[Stev-o]

Looks good. Did you use that clear?

[briancwynn]

I did use it with 3 coats of color and 2 coats of primer. They look really good.  The top coat I was going to sand but decided not to as they look really good. Only 2 coats of clear with no sanding in between.

[briancwynn]

I have seen that but was does it do? I thought it was to lighten the frame or something?

[70CB750]

I have seen that but was does it do? I thought it was to lighten the frame or something?

It allows you to work on the head of CB750 without taking the engine out of the frame; even to take the head out I believe.