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 First, knock the counter shaft...  First, knock the counter shaft out from the front of the case to the back. When you do, the cluster gear will drop down enough to disengage from the main shaft gears so you can pull the whole assembly out the tailshaft end of the housing.  This shot shows you the main-to-cluster...  This shot shows you the main-to-cluster shaft relationship. Notice there are thrust washers on both ends of the cluster. Make sure that you recover them.  The reverse gear and shaft...  The reverse gear and shaft rarely need to come out. Unless there is obvious damage, just leave it in place.  The input shaft, which is...  The input shaft, which is also Fourth gear, simply slides off the end of the main shaft. The roller bearings inside the input shaft ride on the very end of the main shaft.  Remove the snap ring to slide...  Remove the snap ring to slide the 3-4 slider and Third gear off the front of the shaft. The rest of the gears slide off the back of the shaft.  The main shaft is held in...  The main shaft is held in the tailhousing by a snap ring that fits into a grove in the rear main bearing. You'll need to hold it open while you or a friend taps the main shaft with a soft hammer to pop the bearing out of the housing.  The rear bearing has a snap...  The rear bearing has a snap ring, but it's also pressed onto the shaft so it's best to find a shop to help you press it off the shaft. The bearing holds First gear in place, so it slides right off with the bearing. Note the grooves for the speedometer gear just above the bearing.  Just one more snap ring and...  Just one more snap ring and you can pull the 1-2 slider and Second gear off the shaft. The straight cut gear attached to the 1-2 slider is for reverse. The main shaft in these transmissions seldom need replacing, but still check each bearing surface for any damage.  The kit from Zumbrota Bearing...  The kit from Zumbrota Bearing and Gear comes with everything you need to return your transmission to like-new operation. The countershaft is an extra-cost item, but in our case it was a good idea to replace it.  Don't forget to replace the...  Don't forget to replace the seal inside the bearing retainer.
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