Trouble shifting my M35

[military police]

I am new to the organization. I bought a M35 truck and I am having trouble shifting it. It will go into reverse and first, however, I can not shift it into 2,3,4, or 5. It slides over in neutral, however, I can not put it into gear. Any help or suggestions you might offer will be greatly appreciated.

 

[Kaiser67M715]

My first though is all the syncros are shot, but you can look through the tech manuals and find the part that describes how to pull the top off the shifter, because another possibility is the shift forks are messed up. Either way I would say to pull the top cover is your next step.

Technically you should be able to throw it in any gear without syncros


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[dmetalmiki]

As mentioned you should be able to select gears "clutchless". However if you are not conversant with this procedure, remove the top cover and examine for damage or strained parts under there. Also check the engagement movement at that time.

 

[Tracer]

As mentioned you should be able to select gears "clutchless". However if you are not conversant with this procedure, remove the top cover and examine for damage or strained parts under there. Also check the engagement movement at that time.

I agree. Also drain your transmission oil, this will give you a better look at the internals of your transmission with the top cover off, and also look for metal particles in the oil.

 

[MWMULES]

Also is your transfer case all the way in High range?

 

[military police]

It will not shift with the clutch or without. I am planning to take your advice and remove the top plate. Do you suggest which part I should inspect? Thanks in advance for your help.

Military Police

 

[military police]

I have tried the transfer case in low, high and neutral with no success. Thanks for your advice and concern.

Military Police

 

[M543A2]

The top cover has plugs in the side under which are springs and detent pins or balls that prevent shifting into two gears at once. They engage milled slots in each fork rail. When shifted into one gear, they shift into the detents in the other rails to prevent two-gear engagement. Something might be wrong with them, like rusted in place. If they are not moving correctly they will prevent shifts. Sometimes moisture in the transmission rusts things under the top cover. The rails for the other gears might also be rusted in place in the cover. Even if the synchros were bad it should still move into gear if other problems did not exist. So, pull the cover and check for damage, rust, or detent problems that are inhibiting movement of the rails.