Problem
Leak at front slip yoke, an occasional drop of lubricant leaking from splined yoke is normal.
Cause
Rough outside surface on spline yoke. Defective transmission rear oil seal.
Solution
Replace seal if cut by burrs on yoke. Minor burrs can be smoothed by careful use of crocus cloth or honing with a fine stone. Replace yoke if outside surface is very rough or badly burred. Replace rear transmission oil seal. Bring transmission oil up to proper level after correction.
Problem
Knock in drive line, clucking noise when car is operated under floating condition at 10 mph or 16 kph in high gear or neutral.
Cause
Worn or damaged universal joints. Slide gear hub counter bore in differential worn oversize.
Solution
Replace universal joints. Replace differential case or side gears as required.
Problem
Ping, snap or click in drive line. Usually occurs on initial load application after transmission has been put in gear either forward or reverse.
Cause
Loose bushing bolts in upper or lower control arm. Loose companion flange.
Solution
Tighten bolts to specified torque. Remove companion flange, turn 180 degrees from its original position lubricate splines and reinstall. Tighten pinion nut to specified torque.
Problem
Roughness at low speed light load at 15 to 35 mph or 24 to 56 kph.
Cause
U bolt clamp nuts excessively tight.
Solution
Check and tighten to specified torque. If torque was excessive or if brinelled pattern on trunnions. Replace U joints.
Problem
Scraping noise.
Cause
Oil slinger, companion flange or end yoke rubbing on rear axle carrier.
Solution
Straighten or replace oil slinger, companion flange or end yoke rubbing on rear axle carrier to remove interference.
