I am working on the 5th gear synchro replacement (actually 2nd and 3rd if I can get in that far) but I am curious how to get everything back on that requires a puller to get off? all I have to go by is the write-ups on the 5th synchro, and the FSM of course. this is the 1st tranny job I have attempted, so any other info or tips you could provide would be great.

 

The parts that need pulled for 5th synchro are bearings.

Ideally, use a properly sized pipe to drive them on. Second best, use a punch and tap the parts (bearings) on by driving on the INNER race of the bearing. Never, ever, apply force to the outer race of a bearing that you're putting onto a shaft.

Make sure to drive it on perfectly evenly - you don't want it getting the slightest bit crooked.

Dave

 

question: it makes sense when you say never put force on the outter race of a bearing. but in all the write-ups I've seen, the gear pullers are pulling on the outter race. are these always replaced during this job? it never seems to be mentioned as one of the replaced parts.

if that's the case, then do you do the same w/ the countershaft bearing? how about the fronts, shouldn't they be changed at the same time?

 

Yep, the roller bearings technically are destroyed by pulling them.

If you're taking things apart, it would make sense to replace at least the big input shaft bearing. That one seems to puke most often. Unfortunately the needle bearing between the input shaft and mainshaft also tends to wear out and damage the journals on the shaft. So to do a 'full' rebuild would take a lot more labor to tear things completely apart.

 

2nd gear is directly in the middle of the mess. in short, getting to the 5th gear syncro is only about 1/10 of the job to get to the 2nd and 3rd gear syncros just as a general idea how much of a pain it is to get the rest of it apart.