Needle bearing in Tii tuna can

[rapandi]

Hi team

 

As I refurbish my engine I took a closer look at the tuna can assembly on my tii. I noticed that it has two needle roller bearings pressed in to the aluminium where the the throttle rod goes through. 

 

These bearings are are in pretty poor state. I am guessing back in the day Bmw would not have bothered replacing the bearings. They would have just replaced the entire assembly. 

 

Judging from the the way the bearing are pressed in I don’t think it was designed to be overhauled with a new one. Can these be replaced? I can’t work out how I would pull it out though.  

 

Just fishing for thiughts and ideas before I make a decision. 

 

Raj 

 

[chargin]

You may want to try flushing it out with some penetrating oil and spinning the shaft just to see if it may look worse than it is 

[OriginalOwner]

Raj,

 

+1 chargin ......  those will clean right up with with solvent, penetrating oil, whatever.   IMHO those bearings carry no real load to speak of, so they don't wear out, they just get dirty.

 

Cheers,

 

Carl

 

[JohnS]

The real wear area on the tii throttle body is the other hole that has the pressed in bushings (brass I think).  Those bushings get worn because of the spring tension from the throttle return spring.  I've heard that people sometimes get that area re-bushed, but I don't know where they get it done.  The needle bearings are on the shaft for the butterfly, no?