FarnorthMN Posted Friday at 12:11 AM Share Posted Friday at 12:11 AM Good evening guys! have trouble shifting in to 8/4 hole on my 9 speed, kinda new to shifting this trans but I believe im shifting it right. all other gears and spliter work fine. Is there anything I can look for in the top cover or rear case? I also noticed and few clutch housing bolts missing along with some loose. the rear main is leaking pretty good so I plan on pulling it out anyway and checking the clutch. The 9 speed is on a 1986 superliner with and 350 E6. Any input would help! Thanks Guys. Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/ Share on other sites More sharing options...
Joey Mack Posted Friday at 12:46 AM Share Posted Friday at 12:46 AM Pull the shift cover and check the set bolt in the 4th-8th shift fork.. it will also be a good time to inspect the rails,detents and poppets as well. Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585512 Share on other sites More sharing options...
FarnorthMN Posted Friday at 12:54 AM Author Share Posted Friday at 12:54 AM will do much appreciated. If I do need to put a reman in is there a better option? 10, 13? I would like to keep the .71 OD or faster. Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585516 Share on other sites More sharing options...
Joey Mack Posted Friday at 01:05 AM Share Posted Friday at 01:05 AM Don't know. But if the shift cover needs some tuning, just do it and run what you have Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585517 Share on other sites More sharing options...
FarnorthMN Posted Friday at 01:10 AM Author Share Posted Friday at 01:10 AM sounds good thank for the advice I'll take a look Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585518 Share on other sites More sharing options...
FarnorthMN Posted 9 hours ago Author Share Posted 9 hours ago Finally got around to pulling the top cover off. I have attached a parts diagram to help me explane what I found. when looking over the top cover I found #20 and #21 super loose witch was causing a lot of play in what I believe to be the shift fork for 4/8 gear. About a 1/4" to be exact on the end of the shift fork. when I flipped the cover over the nut #17 that holds the bolt #21 in had backed out and almost fell off. do you guys think this could cause the 4/8 syncro gear to not engage? I have also attached a pic of what I think the 4/8 syncro gear seems a little ground down but do think it will still work? whay should there torque spec be for the #17 nut? and what else should I be checking? sorry for all the qestions thanks everyone! Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585707 Share on other sites More sharing options...
Joey Mack Posted 9 hours ago Share Posted 9 hours ago Your doing good. Is the trans still in the truck ? The 4th-5th sliding clutch is worn badly and is easy to replace with trans out. The synchro is in the back box. Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585708 Share on other sites More sharing options...
FarnorthMN Posted 8 hours ago Author Share Posted 8 hours ago 42 minutes ago, Joey Mack said: Your doing good. Is the trans still in the truck ? The 4th-5th sliding clutch is worn badly and is easy to replace with trans out. The synchro is in the back box. currently the trans is in the truck but will be pulling it out due to a pretty bad rear main leak. 4th and 5th or 4th and 8th? Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585712 Share on other sites More sharing options...
Joey Mack Posted 8 hours ago Share Posted 8 hours ago The small gear between the speed gears is called a sliding clutch. It is not a synchronizer. The synchronizer in that trans is in the rear box and looks like a large 2 sided motorcycle clutch. With the Trans out and up on its nose, you can take it apart without special tools. Do you have the book? Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585713 Share on other sites More sharing options...
FarnorthMN Posted 8 hours ago Author Share Posted 8 hours ago I do not have a book but I will be ordering one tonight, ebay has them.1984 should be the same as 1986? I will also find a book for the clutch as well 12 minutes ago, Joey Mack said: The small gear between the speed gears is called a sliding clutch. It is not a synchronizer. The synchronizer in that trans is in the rear box and looks like a large 2 sided motorcycle clutch. With the Trans out and up on its nose, you can take it apart without special tools. Do you have the book? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585714 Share on other sites More sharing options...
Joey Mack Posted 8 hours ago Share Posted 8 hours ago The clutch is in the book. I have 3 sets of driveline books. If you need a newer version, I can sell them cheap. IE: a T-2090 book. $50, shipping included.. Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585715 Share on other sites More sharing options...
Joey Mack Posted 8 hours ago Share Posted 8 hours ago Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585716 Share on other sites More sharing options...
FarnorthMN Posted 8 hours ago Author Share Posted 8 hours ago I'll message you thank you! Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585718 Share on other sites More sharing options...
Joey Mack Posted 7 hours ago Share Posted 7 hours ago 880joe, has a few 2090,s. You may want to P.M. him 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76143-another-t2090-shift-problem/#findComment-585719 Share on other sites More sharing options...
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