S.O.S. 833 pops out of 3rd without load.

[hemidup]

Just made my first attempt rebuilding an 833 4 speed. All new parts except for shifter fork. Shifts great, however while cruising around town in 3rd and if you let off the gas, the trans pops into "N". Using offset dowel pins, the Lakewood bellhousing is within .002". Quadrupled check the linkage and everything is fine. Need help.

Need help. Thanks in advance,

Jerry

[Mike Taylor 3601]

Bell housing was going to be first suggestion, may make sure it's fully engaged in gear,also could be thrust issue that pops it out when letting off gas.
mike Taylor 3601

[buzzinhalfdozen]

Not familiar with this particular trans , however I'll assume it has a detent system for the shift rails? If so is it possible for some reason rail is not moving enough for detent to sit in rail groove? That is what basically holds it in gear along with any back cut on the shift sleeve. Take the linkage off and by hand move the shift arm you should be able to feel the detent drop into the shift shaft rail. Joe

[Arnold Greene]

i would check the adjustment on the shifter to insure it is all the way in 3rd, as well as the stops on the shifter.

[FED 387]

Ditto on the stops/alignment of the shifter---also check the bushings on the trans shifter arms might be a cracked one----I think it also could be a shifter fork or a slider might be worn--- is it only third???? Do you have to "hold" it in gear to keep it from popping outa gear???

[hemidup]

Originally Posted by FED 387

Ditto on the stops/alignment of the shifter---also check the bushings on the trans shifter arms might be a cracked one----I think it also could be a shifter fork or a slider might be worn--- is it only third???? Do you have to "hold" it in gear to keep it from popping outa gear???

Yes, it only does it in 3rd and no, I don't have to hold it in gear as long as its under a very slight load. When puttin around town in 3rd and as long as my foot is on the gas its fine. It's only when I let off the gas is when it pops out of gear. I put the transmission in 3rd and pulled the linkage rod off. 3rd gear was fully engaged. I even pulled the shifter stop out and it did the same thing. I'm replacing the side cover and shifter fork since those are the only items that were reused. I'll look into the shifter itself tomorrow.

Thanks

[FED 387]

thinking more about this the 3rd gear synchro is MOST likely bad-- this is a classic symptom of a worn synchro---same symptoms in any make of trans if the synchro is bad when either decelerating or just coasting it will jump out of gear what ever gear it is in at that time ---comp

[hemidup]

Originally Posted by FED 387

thinking more about this the 3rd gear synchro is MOST likely bad-- this is a classic symptom of a worn synchro---same symptoms in any make of trans if the synchro is bad when either decelerating or just coasting it will jump out of gear what ever gear it is in at that time ---comp

Yes, your correct. However every part in this transmission is brand new with the exception of the shifter fork and side cover.

[FED 387]

Well try the fork and side cover see if that works if not look at the 3rd gear synchro next--about the cover look at the hole the shifter fork goes thru see if it is wallowed out from use and check the fork to for excessive wear---are both forks the same if so reverse their positions swap one for the other see if that cures it--I'm still saying synchro is messed up some way

[hemidup]

Originally Posted by FED 387

Well try the fork and side cover see if that works if not look at the 3rd gear synchro next--about the cover look at the hole the shifter fork goes thru see if it is wallowed out from use and check the fork to for excessive wear---are both forks the same if so reverse their positions swap one for the other see if that cures it--I'm still saying synchro is messed up some way

I'll try all your sugestion's tomorrow. Thanks a ton.

Jerry