TROUBLES Symptom and Probable Cause Slips Out of High Gear a Transmission loose on differential carrier b Control linkage does not work freely binds c Does not fully engage d Damaged mainshaft pilot bearing e Clutch gear bearing retainer broken or loose f Dirt between transmission case and differential carrier Slips Out of Low and or Reverse a First and or Reverse gears damaged from operating at part engagement b Improper mated splines on inside of first and re verse gear and or external spline on 2nd and 3rd clutch sleeve I c Improperly adjusted linkage Noisy in All Gears a Insufficient lubricant b Worn countergear bearings c Worn or damaged clutch gear and countershafl drive gear i d Damaged clutch gear or mainshaft ball bearings e Damaged speedometer gears Noisy in High Gear a Damaged Clutch gear bearing b Damaged mainshaft bearing Noisy in Neutral with Engine Running a Damaged clutch gear bearing b Damaged mainshaft pilot bearing roller Noisy in All Reduction Gears a Insufficient lubricant b Worn or damaged clutch gear or counter drive gear kND REMEDIES Probable Remedy a Tighten mounting bolts b Adjust and free up shift linkage Torque reactions of engine should not cause the lever on transmission to move The movement of transmission with respect to body should be transferred to the control linkage c Measure length of engagement pattern on clutching teeth If less than check for bent levers shifter shafts detent cam plates control rods and other shift linkage Replace or straighten defective parts d Replace pilot bearing e Replace clutch gear bearing retainer f Clean mating surfaces a Determine cause for example worn shift fork control lever or rod interference Replace worn or bent parts b Replace 2nd or 3rd speed clutch sleeve and or first and reverse sliding gear Possible correction is to change index of gear on clutch sleeve approximately 180 and or turning the rear side of first and reverse gear to the front of the transmission c Adjust linkage a Fill to correct level b Replace countergear bearings and shaft c Replace worn or damaged gears d Replace damaged bearings e Replace damaged gears a Replace damaged bearing b Replace damaged bearing a Replace damaged bearing b Replace damaged bearing roller a Fill to correct level b Replace faulty or damaged gears CORVAIR SHOP MANUAL