Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

T56 can't shift into 1,3,5,6, or Reverse

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Old 01-18-2011, 06:38 PM
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Default T56 can't shift into 1,3,5,6, or Reverse

I just put in my trans and I can't get into to any of these gears. I can get into 2nd and 4th. I have searched on this topic and am waiting to hear back from the guy who was having the same problem, but he never posted a fix. I am going to bleed the clutch again, but I am thinking that it is something other the hydraulics. The clutch, slave, master, and pilot bearing are all new.

Any help on this would be great!
Old 01-18-2011, 06:41 PM
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Did you find the post about shifter stops and to remove them?
Old 01-18-2011, 06:59 PM
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No I didn't read anything about those. I will check it out right now.
thanks
Old 01-18-2011, 07:07 PM
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its also a stock shifter
Old 01-18-2011, 07:24 PM
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cant find anything on shift stops except for aftermarket shifters.
Old 01-19-2011, 07:48 PM
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had the same prob, could only shift into 1st and 3rd, sorry no fix tho just had rebuilt with warranty
Old 01-20-2011, 12:34 AM
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yep thinking thats what I'm going to have to do. I bleed the **** out of the clutch today and it feels like its going into 2,4,6 but everything else is still a no go. Thanks for the advice.
Old 01-20-2011, 11:27 AM
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If you have the 2 solenoids switched, it will also do this. Did you have them out for any reason?
Old 01-21-2011, 09:47 PM
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Have you tried to shift it into gear when the car is off? If it goes in fine when the car is off and you didnt remove the solendoids then you need to check your clutch, Assuming you replaced your pilot bearing. If you also know how to put in the clutch and know that you didnt put the clutch disk in backwards then I would look into your hydrolics.
Old 01-22-2011, 02:24 AM
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Going to check out the skip shift deal. I broke down the whole trans and I don't really see anything out of wack. Even the pad on the shift forks look good. If it is just the skip shift being a bitch I am going to be pissed!
Old 01-22-2011, 03:29 PM
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The skip shift solenoid is located on the main case and has a white plastiv connector. The reverse inhibitor solenoid is on the extension casting and has a black plastic connector. Both connectors are identical other than color. Both solenoids are identical-looking as well, but they are oposite-acting. The skip extends with power , the reverse retracts with power.
Old 01-23-2011, 11:47 AM
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So found out that the 2 soleniods don't have power to them when the car is on. So I got rid of the reverse lockout spring and will unplunge the skip shift. I am running this in a 240sx, so I don't plan on get past 5th gear. Which is good becuase as you will see in the picks 6th gear look beat up from a fork bushing going bad. Also anybody that knows about sync's can you watch the vid and let me know what you think. I am not sure what a syncro is suppost to slide like, so any help would be great.














the bottom pic is the video
Old 01-23-2011, 04:59 PM
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pretty positve that the syncro's are bad. I put it all back together and still can get into 1,3,5,6, or reverse. rebuild time! FFFUUUUCCCCKKKKKKKKKKKIINGGGG bullshit!
Old 01-23-2011, 06:03 PM
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you must have a shifter problem.
the syncros may, or may not be any good,the wear area's arent visible, but in pic 3 I see the shift teeth on that gear are pretty bad - you could dress em up a little.
I'm no t-56 pro, but I really think your problem is in the internal rail shifter.
Old 01-23-2011, 07:32 PM
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Originally Posted by 3pedals
you must have a shifter problem.
the syncros may, or may not be any good,the wear area's arent visible, but in pic 3 I see the shift teeth on that gear are pretty bad - you could dress em up a little.
I'm no t-56 pro, but I really think your problem is in the internal rail shifter.
In pic 3 that is gear #6, I know that the teeth are worn, but it doesent explain why i cant get into 1 3 or 5th gear. I can get into 6th but its a pain. Im more concerned with 1 3 and 5th. could this be a shifter problem?

any help is appreciated!
Old 01-23-2011, 07:37 PM
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also, how can I identify said shifter problem. The shafts seem straight and all the bearings seems to run smooth. what else could the problem be?
Old 01-24-2011, 07:59 AM
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Pic 3 shows the 6th clutch teeth are beyond repair...a new drive gear and sychro will be needed. As far as the shift probs go, are you sure you got the two case bolts that guide the linkage ( on the top of the case) in the correct position? If they are out of the grooves , the linkage will not work correctly.
Old 01-25-2011, 04:04 PM
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so i think figured out the problem. the ******* that sold me the trans put a GTO offset lever in it and its throwing everything off. ordered a new one. I'm pretty sure this will fix the problem.
Old 01-25-2011, 05:11 PM
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Not really that bad at to rebuild and all you need is a puller, press, a couple of bolts, washers, and some PVC pipe.
Pretty sure I figured out the problem. The ******* who should me the trans put a GTO shift lever in it.


The GTO is on the right f-body on the left, so I know why it wouldn't get into those gears! Not enough throw!
Old 01-25-2011, 09:19 PM
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Originally Posted by drift donkey
so i think figured out the problem. the ******* that sold me the trans put a GTO offset lever in it and its throwing everything off. ordered a new one. I'm pretty sure this will fix the problem.
If you had first mentioned this trans was never in your vehicle before, someone probably would have suggested this and saved you a lot of time&effort...


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