Buick LeSabre 1965 Service Manual page 168

4 - 3 2 45000 SYNCHROMESH
CLUTCH, S-M TRANSMISSIONS
SYMPTOM AND PROBABLE CAUSE
SLIPS OUT OF LOW AND/OR REVERSE
a. First and/or Reverse gears damaged from
operating during partial engagement.
b. Improper mated splines on inside of first
and reverse gear and/or external spline
on 2nd and 3rd clutch sleeve.
c. Improperly adjusted linkage.
NOISY IN ALL GEARS
a. Insufficient lubricant.
b. Worn counter gear bearings.
c. Worn or damaged clutch gear and counter-
shaft drive gear.
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.
c. Damaged speedometer gears.
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 g e a r or
countergear.
NOISY IN SECOND ONLY
a. Damaged or worn second speed constant
mesh gears.
b. Worn or damaged c o u n t e r g e a r rear
bearings.
PROBABLE REMEDY
a. Determine cause, for example, worn shift
fork and 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.
c. Replace speedometer gears.
a. Replace damaged bearing.
b. Replace damaged bearing roller.
a. Fill to correct level.
b. Replace faulty or damaged gears.
a. Replace damaged gears.
b. Replace countergear bearings and shaft.