Tapered Roller Bearing Shimming Procedure
Note: The auxiliary section may be shimmed in either the vertical or horizontal position. Vertical shimming is performed with the transmission removed from the truck while horizontal shimming takes place with the transmission still in the truck.
Before installing the auxiliary section, install countershaft
straps on each countershaft. Use three (3) 3/8" x 1" capscrews for each strap.
For vertical shimming, place the transmission in the vertical position. Place (2) wood blocks under the clutch housing to prevent the trans- mission from tipping and damaging
the input shaft. Place the auxiliary housing on the front box.