Nice sharp syncro crown teeth but some broken off,
fast hard shifts, clutch not fully engaged during shift or speed
shift.
Rounded off teeth and some broken, rounded off is
the most common problem, causes that grind sound you here going into second
gear, 1st and even 3rd in some cases. the coresponding teeth of the slider are
skipping off the tips of the syncro crown, instead of passing by each other to
make engagement. New syncros and sliders only go so far if the syncro crown
teeth are bad.
Nice sharp teeth all around as pressed
off of gear. this is what we call a syncro crown used on all 5 gears there are
non-moly type, 105-115 Moly type and 116-119 Moly type.
| Example of a worn out main shaft ball end and the receiving drive
shaft snout bushing. This is an extreme case, but a slightly worn set cause
problems. This joint is responsible for keeping the driveshaft spinning in a
line, not an elliptical pattern. This important centering joint is often
overlooked reason for shuttering on take off in 1st gear and shifter shake on
the freeway. Ball end of the trans. main shaft should have a thin polished line,
if that gets wider on one side, it needs to be fixed. Inside of the receiving
bushing should be checked also. |