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Add Diff lock Ford 3400

S

seadog

New User
Hello all, thanks for having me.

Is it possible to add a diff lock, Ford 3400?

Bought one that sat for a while and with a commercial fishing / mariner background I know at least enough about a deisel and hydraulics to get it home from the field if needed. Fixed a handful of leaks and seems to operate as expected.

Already see the value of a diff lock, I know it was an option but can one be added now and is it reallt worth it?

Thanks in advance.
 
I believe they have an advantage in tillage situations that are in the 90% of the engine capacity. The advantage is small when compared to weight
balancing/ballast. If you discover that the parts cost and labor don't pencil out, maybe trading for one with the lock is easier, quicker, and
cheaper. Jim
 
Probably a factory added option only. Would need to find a Donor (next to impossible) with the option to make the swap possible and affordable.
 
Not an easy(or cheap) undertakeing.A major 'redo' of the rear end would be in order. Easier to just deal with a nonlocker,or trade it for one
with diff lock.
 

Understood, at least it has PS.

I'll be using this as utility mostly, and for what it's worth it doesnt sound like a viable alternitive for me to add anything other than maybe a ROP for a backhoe someday.

Plenty of preventive maintenence, and as long a she keeps running I should be ok with what I have, certainly beats a shovel.
 
A 3400 is just a 3000 with a heavy non
adhustable front axle. So the parts from a
3000, 3600 and a few other models would be
a direct swap. You would swap the entire
rear axle. Having fooled around with a
couple dozen of that size Fords I can say
it is a simple swap and I would be willing
to do it to get diff lock. In the meantime
I would add weight and more weight to the
rear end.
 
(quoted from post at 16:13:08 07/19/21) A 3400 is just a 3000 with a heavy non
adhustable front axle. So the parts from a
3000, 3600 and a few other models would be
a direct swap. You would swap the entire
rear axle. Having fooled around with a
couple dozen of that size Fords I can say
it is a simple swap and I would be willing
to do it to get diff lock. In the meantime
I would add weight and more weight to the
rear end.
Click to expand...

Now thats an alternitive I can handle. Not in a huge rush but would start to look in that direction. Maybe find one from a junk tractor or classified somewhere?
 
I don't know this tractor but I suspect it has independent rear brakes,
that is a separate pedal for each side. If so you can apply the brake to
the tire that spinning and make the tire with traction pull. You need to
practice this when it's not necessary to get the feel of it.
Dave.
 
Sure you can put one on. All it takes is time and money.

Most likely on an old tractor like that you won't be able to find it as a "kit" or as new parts at the dealer. You will need to find a tractor at a salvage yard. These tend to be in the differential so you will have to pull the entire rear end of the tractor apart to get what you need, then you will have to tear the entire rear end of your tractor apart to install it. You'll need to set up the ring and pinion so it doesn't instantly fail or make lots of noise. It's a lot of work. Alternatively you can do a complete rear end swap, but then you don't know what you're getting from the salvage tractor. Is it any good?
 
About 2000 mile round trip for me. Dont think I could afford the gas and rear end right now.

Thanks
 
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