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Discussion Starter · #1 ·
Hey guys, I'm in the last stages of getting this long time project on the road and running into some problems. I did a diesel swap and have a remanned transmission with a set of crawler gears. When I engage the clutch, the motor spins freely. When I put the transmission in any configuration (forward-reverse-neutral, in gear or out of gear, or in crawler, the motors stalls. I must note the truck is upon Jack stands, all tires are free
spinning, 4wd and diff locks disengaged. The transmission has had new
output seals installed using the proper tools.

Any insight you guys mighthave would be greatly appreciated!!
Stefan
207-730-1023
 

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'88 U-1300L, '70 406, '78 406, '78 416 project, '82 406, '57 404, '65 404, '70 404, '68 Haflinger.
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1,852 Posts
Try it in 6th gear, forward, and let us know if that was successful.

What's the history of the tranny?

That has to be a very frustrating situation...Good luck,

Bob


Hey guys, I'm in the last stages of getting this long time project on the road and running into some problems. I did a diesel swap and have a remanned transmission with a set of crawler gears. When I engage the clutch, the motor spins freely. When I put the transmission in any configuration (forward-reverse-neutral, in gear or out of gear, or in crawler, the motors stalls. I must note the truck is upon Jack stands, all tires are free
spinning, 4wd and diff locks disengaged. The transmission has had new
output seals installed using the proper tools.

Any insight you guys mighthave would be greatly appreciated!!
Stefan
207-730-1023
 

· Registered
Joined
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7 Posts
Discussion Starter · #3 ·
Try it in 6th gear, forward, and let us know if that was successful.

What's the history of the tranny?

That has to be a very frustrating situation...Good luck,

Bob
So far I have figured out one of the issues. I replaced the lower left side transmission cover bolt with one that was too long, and it was locking up the counter shaft. Now the motor will run in neutral and in 6th. I'm trying to make sure none of the shift forks popped out of place during the output seal replacement, but I'm working alone so a lot ofback and forth.
 

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round one , square one
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Those shift forks are a PIA. I took my cover off, probably 4-6 times trying to align everything. Then I had a shift fork bust as I tried to engage fwd. rev., luckily the piece did not drop into the tranny. It's still sitting on my dresser...lol

G Vavra
 

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mogless, except for my friends MB4-94. And a bunch of other diesel junk.
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2,513 Posts
If it was recently rebuilt, it's possible that the top cover was not aligned properly when installed. If those shift forks don't line up right it's murder to figure out if you've never done it before. We ended up hauling a 406 to to Von cause I couldn't figure it out. Pull the side cover and watch the forks move the collars as a friend shifts for you. If you figure out which one it is, you might not even need to pull the top cover all the way to get it in the right spot. Good luck.
 
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