MOM 0 FRONT I i x 3 4 FORK 1 2 FORK Fig 6D 54 Shift Forks Installation tially into the case The interlock end two opposite notches of the shaft goes to the rear of the case Engage 1 2 shift fork fig 6D 54 which is identified by the thru gate at the shift location with the 1 2 synchronizer Align the pin holes in the shaft and fork then tap shaft rearward until it engages interlock and secure fork to shaft with roll pin 19 Install detent ball spring gasket and cap in 1 2 detent channel fig 6D 55 Cap used at this location has the longer shank 20 Drop remaining interlock into 3 4 detent channel then push 3 4 shift fork shaft partially through hole in front of case Engage 3 4 shift fork fig 6D 55 in 3 4 synchronizer align pin hole in shift r w 4 Fig 6D SS Installing 1 2 Shift Fork Detent Components fork and shaft then push shaft fully to rear of case until it engages interlock Secure shift fork shaft with roll pin 21 Install remaining detent ball spring nylon washer and cap in 3 4 detent channel at left rear of case 22 Prior to installing front bearing retainer and side cover test operation of shift forks by actuating the shift selector lever with a small pin punch inserted in the hole in the shifter shaft If transmission shifts satisfactorily install front bearing retainer using a new gasket and secure with seven bolts tightened 15 20 ft lbs Complete assembly of transmission by installing side cover with new gasket and secure with eight bolts tightened 3 4 ft lbs CORVAIR SHOP MANUAL