Attention: TDR Forum Junkies My getrag is driving me nuts. I have tried on a few other message boards and have spoken to a few rebuilders; however, I am coming up empty on solutions.
I’ve owned the truck for 4 years. Shortly after buying it I noticed a a few issues mainley the shift er vibrating and difficulty going into third gear.
The previous owner had ran delo 15w40 in the trans. I immediatly drained it out and filled the trans with 5 quarts 5w30 mobil 1 as everyone ssems to reccomend. While this helped a bit shifting into 3rd was still extremely slow. As the transmission was/is difficult/ extremly slow to shift and the violently vibrating shifter, I decide it was time to pull it, and rebuild it over the winter.
The transmission had the follwoing issues prior to rebuild:
-Shifter vibrates violently in 3rd gear but no others.
-synchronizer noise/difficult to up shift from 1st to 2nd
-synchronizer noise/difficult to up shift into 3rd gear
-synchronizer noise/difficult to downshift from 3rd to 2nd
-synchronizer noise/difficult to downshift from 2nd to 1st
-One time on a steep incline the trans popped out of 1st gear. I had kind of “stepped on it”. It has not happened since, however I haven’t tried to replicate it.
I rebuild the transmission myself. It got new bearings (except the needle bearings) synchronizers and input shaft. The only part with visable wear was the mainshaft output bearing which was pitted. Surprisingly there was no visable wear to the inputshaft/race or pocket bearing, I replaced them nevertheless. Even though the old synchronizers were in good shape( I was astonished), I still replaced them.
The rebuild manuals spec for bearing preload is .006-.008 I set it at .007. I filled it with 5 quarts of conventional 5w30 as Craig from Zumbrota advised the only getrags they had rebuilt that came back for shift issues was caused by runnging synthetic oil(something about a varnish forming on the gears?)
The Sachs clutch was slipping so I replaced it with a HD singledisk/ new flywheel with pilot bearing from south bend. I replaced the throwout bearing, fork and pivot ball as well.
Now, I have about 400 miles on the truck since rebuilding it and I am (still) having the following issues:
-Sychroniser noise difficulty to shift from 1st to 2nd.
-Synchronizer noise difficulty to shift from 2nd to 3rd.
I want to make it clear I am not attempting to "speed shift" the transmission, and correct me if i am wrong, but I don’t believe I should have to shift into neutral then count: one, onethousand , two onethousand, three onethousand before i am able to shift without grinding/synchronizer noise( even when waiting that long it still grinds at times.
About the only way I can shift into 3rd without noise is to go from 2nd into neutral then slightly pull it back like im going into 4th then up into 3rd.
Because of this slow shifting, even on the slight hill (totally unloaded only my 180 lb. self in the truck) I can barely shift into third without lugging it.
Its driving me nuts considering it shifts great from 3rd to 4th and 4th to 5th.
Also, I am unsure if this is normal or not, but lets say i put 30 miles on the truck on the interstate at 70 in 5th gear(truck has 3.54s) and was to park get out and touch the trans it is to hot to be able to hold my hand on without burning it.
The only Idea I have as to the poor shifitng is the clutch hydrolics are worn internally and I need to replace them(they are bleed and there is no leaks). However,they are not cheap and I am tired of putting money into this thing if the can’t shift decently.
Does anyone have any clue as to where I can go from here?
Any folks in Indiana with getrag trucks, rebuild experiance?
Any help is greatly appreciated.
Mike
I’ve owned the truck for 4 years. Shortly after buying it I noticed a a few issues mainley the shift er vibrating and difficulty going into third gear.
The previous owner had ran delo 15w40 in the trans. I immediatly drained it out and filled the trans with 5 quarts 5w30 mobil 1 as everyone ssems to reccomend. While this helped a bit shifting into 3rd was still extremely slow. As the transmission was/is difficult/ extremly slow to shift and the violently vibrating shifter, I decide it was time to pull it, and rebuild it over the winter.
The transmission had the follwoing issues prior to rebuild:
-Shifter vibrates violently in 3rd gear but no others.
-synchronizer noise/difficult to up shift from 1st to 2nd
-synchronizer noise/difficult to up shift into 3rd gear
-synchronizer noise/difficult to downshift from 3rd to 2nd
-synchronizer noise/difficult to downshift from 2nd to 1st
-One time on a steep incline the trans popped out of 1st gear. I had kind of “stepped on it”. It has not happened since, however I haven’t tried to replicate it.
I rebuild the transmission myself. It got new bearings (except the needle bearings) synchronizers and input shaft. The only part with visable wear was the mainshaft output bearing which was pitted. Surprisingly there was no visable wear to the inputshaft/race or pocket bearing, I replaced them nevertheless. Even though the old synchronizers were in good shape( I was astonished), I still replaced them.
The rebuild manuals spec for bearing preload is .006-.008 I set it at .007. I filled it with 5 quarts of conventional 5w30 as Craig from Zumbrota advised the only getrags they had rebuilt that came back for shift issues was caused by runnging synthetic oil(something about a varnish forming on the gears?)
The Sachs clutch was slipping so I replaced it with a HD singledisk/ new flywheel with pilot bearing from south bend. I replaced the throwout bearing, fork and pivot ball as well.
Now, I have about 400 miles on the truck since rebuilding it and I am (still) having the following issues:
-Sychroniser noise difficulty to shift from 1st to 2nd.
-Synchronizer noise difficulty to shift from 2nd to 3rd.
I want to make it clear I am not attempting to "speed shift" the transmission, and correct me if i am wrong, but I don’t believe I should have to shift into neutral then count: one, onethousand , two onethousand, three onethousand before i am able to shift without grinding/synchronizer noise( even when waiting that long it still grinds at times.
About the only way I can shift into 3rd without noise is to go from 2nd into neutral then slightly pull it back like im going into 4th then up into 3rd.
Because of this slow shifting, even on the slight hill (totally unloaded only my 180 lb. self in the truck) I can barely shift into third without lugging it.
Its driving me nuts considering it shifts great from 3rd to 4th and 4th to 5th.
Also, I am unsure if this is normal or not, but lets say i put 30 miles on the truck on the interstate at 70 in 5th gear(truck has 3.54s) and was to park get out and touch the trans it is to hot to be able to hold my hand on without burning it.
The only Idea I have as to the poor shifitng is the clutch hydrolics are worn internally and I need to replace them(they are bleed and there is no leaks). However,they are not cheap and I am tired of putting money into this thing if the can’t shift decently.
Does anyone have any clue as to where I can go from here?
Any folks in Indiana with getrag trucks, rebuild experiance?
Any help is greatly appreciated.
Mike
