| Author |
Message |
gillig-dan
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 23, 2004 - 9:44 am: | |
Can anyone tell me the where I should begin to troubleshoot a problem with my 5-speed Spicer slipping out of gear in my Gillig 636? I am hoping it is just a linkage adjustment. It did not do this before my engine was R&R'd. It only happens in high gear (5th) when going down hill.
"Imagine all the people
living life in peace..."
Happy Holidays and Merry Christmas,
Gillig-Dan
'70 Gillig 636D |
TWO DOGS
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 23, 2004 - 1:31 pm: | |
I guess it could be a shifting adjustment...normaly it is a bent shifting fork |
BrianMCI
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 23, 2004 - 1:44 pm: | |
Bent shift fork? Maybe... but since this occured only after an engine R&R, perhaps a bent shift rod is the answer, an ajustment might fix that if it would be difficult to straighten the rod.
The timing seems suspect, since it only occured after work was done, but it could be something internal to the tranny like a syncro if it has them...
Brian |
BrianMCI
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 23, 2004 - 2:07 pm: | |
Bent shift fork? Maybe... but since this occured only after an engine R&R, perhaps a bent shift rod is the answer, an ajustment might fix that if it would be difficult to straighten the rod.
The timing seems suspect, since it only occured after work was done, but it could be something internal to the tranny like a syncro if it has them...
Brian |
TWO DOGS
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 23, 2004 - 2:28 pm: | |
did they remove the trans ???? |
Rick 74 MC8
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 23, 2004 - 7:52 pm: | |
Not sure about this app But on a car sometimes it's the pilot bearing in the back of the crank
Rick 74 MC8 |
Phil Dumpster
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, December 26, 2004 - 1:22 am: | |
A misalignment between engine and transmission can also do it. Are the bellhousing bolts nice and tight?
Better take a torque wrench to them and see if they are. If you can't find torque specs for this, go by the size of the bolt. |
Gillig-Dan
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, December 26, 2004 - 10:13 pm: | |
I guess it's time to crawl under and take a look. I had the engine reinstalled by an outfit in Toldeo. That's as far as the bus made it on our Virginia to Wisconsin trip this year. I had this place pull the engine so I could bring it back to Virginia to rebuild it. So far, I have not been impressed with the work they did. It's not like I'm going to take it back to them though, 500 miles away....
Phil, your comments on the loose bolts make me think. On the way back from Ohio, my exhaust fell apart in three places from loose or missing bolts, I had several electrical problems and a fuel and air leaks I've had to fix. In hindsight, I should have put the bus on a flatbed; it would have been much cheaper, and I would have done better work!
I just hope this problem doesn't have me pulling the transmission out. For now, I'm just keeping my hand on the stick and my fingers crossed when I'm coasting downhill. I don't really feel any pushing against my hand. I don't have much experience with transmissions (hope it stays that way for now!). Sound like it might be a linkage problem according to some posts. I'm still trying to recall if they pulled the tranny when the engine was pulled. Maybe they just left it hanging by the linkage!?
Thanks for the help so far, if it's decent out tomorrow, I'll crawl under there and poke around a bit.
Gillig-Dan |
Tony H. (Bluegrass)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, December 26, 2004 - 11:56 pm: | |
Dan
Would you please post the place In Teledo that did the screwed up work on your coach, I live near there and would like to know so I dont fall Into the same trap that you did.
Thanks |
Tony H. (Bluegrass)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, December 26, 2004 - 11:57 pm: | |
Dan
Would you please post the place In Teledo that did the messed up work on your coach, I live near there and would like to know so I dont fall Into the same trap that you did.
Thanks |
Phil Dumpster
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, December 27, 2004 - 2:21 am: | |
Definately retorque the bolts holding the bellhousing to the engine, and the bolts holding the transmission to the bellhousing.
Remember, high gear (1:1) is achieved by connecting the output shaft directly to the input shaft. This is done with a slip coupling inside the transmission. The countershaft(s) in the transmission continue to turn, but no power goes through it/them.
The input shaft must be held true in order for this slip coupling to stay engaged. If the input shaft isn't held true, the joint will wiggle apart on its own. The input shaft is supported by the front bearing of the transmission and the pilot bearing in the center of the crankshaft of the engine. Any slop between these two supports will cause misalignment of the input shaft.
If the bellhousing-to-engine and bellhousing-to-transmission bolts are loose, you may be able to get away with just snugging them up as they are and everything will be fine. The proper thing, of course, is to repeat the transmission installation properly, starting with aligning the friction disk in the clutch.
If your pressure plate is the adjustable type, and your friction disk is nearing the end of its service life, you may be able to back off the pressure enough to allow it to align itself on the transmission input shaft, then readjust the clutch.
Try the easiest thing first, snug up the bolts and see if the problem goes away. |
Gillig-Dan
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, December 27, 2004 - 9:30 am: | |
The shop in Toledo was called CFS. It is located out near the Toledo airport. I don't want to tell anyone not to use them, since I am only one customer. I may change my tune if I have to pull the tranny though. They were the only shop that would take on the work. The shop that towed the bus from the interstate wouldn't touch it, saying there was just too many unknowns on my oddball California student hauler.
Gillig-Dan |