I have an 86 f150 4x4 300 6cyl. NP 435 & it is stuck in 2nd. I've removed the top of the trans. & have tried everything I could think of to get it free. Any Ideas? I was shifting to 3rd & the shift lever was like it was in neut. the only gear slot that worked was reverse, but then the truck would not move at all. I was able to get it out of reverse & drive it back home in 2nd. I would appreciate ANY help with this. thanks

 

it maybe shifted into two gears at once. like the first and low or somthin. check the shiftforks if they are in gear.

 

Bringing this post back from the dead, but I have the exact same issue that the Original Poster of this thread has/had. NP435 Stuck in second, but could shift into reverese (did not drive in R, just would bind it up) Drove the truck home in 2nd that day...27mph 3200rpm. Glad i only work 10 miles from home.

From searching I'm thinking retaining cap on the shifter or nylon cap/bushing on one of the shift forks.

Planning on pulling the shifter and the top off tonight. Any suggestions or tips would be greatly appreciated. I need to get this thing going so I can start hauling firewood!



'77 F150 351w 4x4 NP435 NP205 3.50 open

 

ok guys push the cap and lock down and turn remove the shifter and take a screw driver and alighn.the ball box into a even row that will be i netrual again put shifter back in hole and set cap and lock.. be sure to hold shifter in N make sure cap is locked and let me know!

 

Pulled the shift lever out to align the ball box into an even row as suggested above. It already was so I then took off the top cover to investigate more. Trans is engaged in 2nd gear still. 1-2 Shift fork is missing the nylon bushings and had a lot of wear on it. Ordered a brand new 1-2 shift fork from ebay with nylon bushings on it. ($25 shipped ) I'll put it on later this week when it comes in the mail and let you know. Everything else looked nice inside the trans with no other signs wear. By the looks of the were on the fork the bushing had been off of there for a while. Just not enough metal left on the fork to grab the ring anymore I guess. Glad the fork is softer than the ring!

 

Clean out the debris in the bottom or it'll eat your bearings next...

Replacing the fork without replacing the slider will lead to fork failure again, however depending on how galled up the slider is dictates how long it will last.

This is a common problem with Arm Rester's! (Using the gear shifter for an arm rest), though it is not the only way it can happen.

-Enjoy
fh : )_~

 

I'll empty it out and clean out the bottom before I'm done. Easy time to refill it with the top off!

The Slider looked very good and really did not look at all galled. I was surprised considering how the fork looked.

I am an "arm rester". However, I don't really cruise around in 2nd that much. (Loud exhaust) Usually happens in 4th, but I'll try and stop that now I guess. Thanks for the tips!

 

Sorry double posted

 

Also a great time to pour a bunch of your preferred cleaning solvent through and rinse it out throughly...

-Enjoy
fh : )_~

 

Here's the old fork vs. the new fork. Can you guess which is which?

 

Their should be a magnet in the btm of Np435 and pull it out and clean through pto door. kind of a pain to get out but possible. Now that shift fork is wore out. Never seen one that worn. That tranny is probably 35 yrs old or older if guessing but they are good tranny's, I have broke acouple before but extreme situations.

 

where did you buy the parts i ve been looking for all the shift forks and sliders for months can t find them anywhere

 

parts seller on ebay.

www.cityautopartsal.com