TROUBLES AI Symptom and Probable Cause Slips Out of High Gear a Transmission loose on differential carrier b Control linkage does not work freely binds or does not fully engage c Damaged or missing mainshaft pilot bearings d Clutch gear bearing retainer loose or broken e Dirt between transmission case and differential carrier Noisy in All Gears a Insufficient lubricant b Worn countergear bearings c Worn or damaged clutch gear and countergear d Damaged clutch gear bearing or mainshaft rear bearing 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 roller bearings Noisy in All Reduction Gears a Insufficient lubricant b Worn or damaged clutch gear or countergear Noisy in Second Only a Damaged or worn second speed constant mesh gears b Worn or damaged countergear bearings Noisy in Low and Reverse Only a Worn or damaged first and reverse sliding gear b Damaged or worn low and reverse countergear Noisy in Reverse Only a Worn or damaged reverse idler gear teeth b Worn reverse idler gear bushings c Damaged or worn countergear reverse teeth Excessive Backlash in All Reduction Gears a Worn countergear bushings b Excessive end play in countergear Leaks Lubricant a Excessive amount of lubricant in transmission b Loose or broken clutch gear bearing cover c Clutch gear bearing retainer gasket damaged d Cover loose or gasket damaged e Shifter shaft seal leaks f Countershaft loose in case VD REMEDIES Probable Remedy a Tighten mounting bolts b Adjust and free up shift linkage c Replace pilot bearings in clutch gear d Tighten or replace clutch gear bearing retainer or bearing e Clean mating surfaces a Fill to correct level b Replace countergear bearings and shaft c Replace worn or damaged gears d Replace damaged bearings a Replace damaged bearing b Replace damaged bearing a Replace damaged bearing b Replace damaged roller bearings a Fill to correct level b Replace faulty or damaged gears a Replace damaged gears b Replace countergear bearings and shaft a Replace worn gear b Replace countergear assembly a Replace reverse idler gear b Replace reverse idler gear c Replace countergear a Replace countergear b Replace countergear thrust washers a Drain to correct level b Tighten or replace cover c Replace gasket d Tighten cover or replace gasket e Replace shifter shaft seal f Replace case CORVAIR SHOP MANUAL