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Order Ford NAA Parts Online

NAA No Reverse--LOUD banging

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Author  [Modern View]

02-20-2012 17:37:13

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I have an NAA with a Pippin Backhoe. I was doing some work with it in the woods and needed to back up. I put it in reverse and upon releasing the clutch, heard a LOUD "bang bang bang" from inside the transmission. The tractor shakes as this happens (as if it is trying to go in reverse). After a couple of more tries (same result) I pulled the cover and took a look. I cannot seem to find anything wrong, although I will admit I don't have a lot of experience with these.

I was looking at the IT manual, and it seems that the shifter fork for the reverse gear is held in place on the shifter rod by a set screw and lock nut. Is is possible this may have come loose (or slid down the shifter rod), so my reverse gear doesn't fully engage?

Any other thoughts on this would be appreciated. I took a look through the archives and can find some discussion of this, but nothing like this case. Any pointers or help would be appreciated. Even a picture of how the reverse gear should line up in a good transmission for comparison purposes would be appreciated.

Thanks in advance,

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02-20-2012 21:06:23

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 Re: NAA No Reverse--LOUD banging in reply to Dave41A, 02-20-2012 17:37:13  
Did you try to go forward after the big bang? You may have sheared the rivets that hold the ring gear to the carrier if it won't go forward either. Even more dreaded is the fact that the NAA had a weak rear axle housing and you may have broken it. The housing breaks internally.

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02-21-2012 07:40:26

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 Re: NAA No Reverse--LOUD banging in reply to awhtx, 02-20-2012 21:06:23  
I tried in in a couple of forward gears immediately afterwards to see if there was any problem with them. In short, no, the forward gears seem unaffected.

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