View Single Post
  #5  
Old 18-02-15, 04:40
Bob Carriere Bob Carriere is offline
Moderator
 
Join Date: Mar 2003
Location: Hammond, Ontario
Posts: 5,259
Default Yep its a Chevy tranny...

...and it originated froman enquiry from Herman.

It seems that the front bearing.... Hyatt 1206 is no longer available but NTN as a substitute that does not fit.

The counter shaft is 38.mm the ID of the new substitute is 38.44 and loose/

I have ordered both the 1207 and the offending 1206 and await there arrival..... will go into town with the countershaft and try them there for size.

The reverse gear shaft MUST BE driven from the front towards the back or the case will crack for sure. the front end of the shaft is cut semicircle and fits into a beefed up section that effectively keeps the shaft from spinning. The reverse gear rotates on that shaft supported on two brass sleeves/bushings.

To remove the countershaft from the bottom of the case you need to hammer the visible end of the shaft at the rear towards the front..... that will push out the sheet metal cap that sit tight over the front 1206 bearing.

The 1206 from bearing has an insert or bearing race that needs to be removed to fit over the shaft. The shaft measures just under the original 38mm and the OD of the insert is 38.44mm making for a loose fit.
Attached Thumbnails
IMG_0251crop.jpg   IMG_0252crop.jpg   IMG_0249cropa.jpg   IMG_0260crop.jpg  
__________________
Bob Carriere....B.T.B
C15a Cab 11
Hammond, Ontario
Canada
Reply With Quote