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General Category => General Discussion => Topic started by: cobraffr on 2011-11-28 15:37

Title: 3 speed manual synchronized?
Post by: cobraffr on 2011-11-28 15:37
I have a 3 speed manual on the tree. Currently 1st gear is not synchronized, but 2nd and 3rd are.  Is that by design or do I have a problem with 1st gear.  I may have have to pull the engine and was wondering if I needed to include some transmission work along with that. 

Donny
Title: Re: 3 speed manual synchronized?
Post by: JimNolan on 2011-11-28 15:56
Donny,
   What you see is what you get. It's working the way it suppose to. Remember the old truckers that double clutched the transmissions. That was why they did it, gears weren't synchronized. Jim
Title: Re: 3 speed manual synchronized?
Post by: 57tudor on 2011-11-28 16:08
Donny.

First and reverse are non synchromesh in those trans, only 2nd and 3rd. If you are going to pull the engine and trans, then this is the ideal time to remove the side cover and inspect the trans for ware, loose cluster gear in the case, worn syncrow rings and the fine syncrow teeth on 2nd and 3rd gears. 3rd is the input shaft that is direct drive. Also this is a great time to change the fluid in it if all is well. Check your speedo gear for wear and replace if needed. Most are 19 tooth with the 310 to 1 rearend gear. Good luck with your project.

Rick.
57 Tudor
Title: Re: 3 speed manual synchronized?
Post by: cobraffr on 2011-11-28 16:16
Thanks for the quick feedback.  I guess I need to learn some new driving skills!  This is a huge departure from my paddle shift daily driver.
Title: Re: 3 speed manual synchronized?
Post by: Hoosier Hurricane on 2011-11-29 05:47
Donny:  If you do change the fluid, be sure to find some mineral oil, rated GL1 to replace it.  The modern GL3 through GL5 oils are too slick to allow the snychronizers to work properly, gear clash and hard shifting will result.  I found a gallon of GL1 at my local farm store.  John