Newly rebuild 201 engine leaking oil in front..

JuelDK

Member
Hi Fellow Ford enthusiasts :)

My 4610 with the 201 Diesel engine, just had the engine rebuild. But after 2 hours use, its now leaking oil at the front crankshaft seal :roll:
My plan is to pull the tractor apart again and replace the seal and the Crankshaft Collar. I didn't replace the Crankshaft Collar the first time, my hope is that that's the problem.

But looking at the spare part drawing is confusing me:
https://partstore.agriculture.newho...-search.html#epc::mr52323ar361255bi2248320-18

Number 6 and 9 on the illustration is the parts I'm talking about above. But what are parts 18 and 8 for??

I think I remember part 8, but as I remember, it was on the other side of part 9, the oil seal.

But I can for the life of god not figure out where part 18 the O-ring should be placed? :shock:

Can anyone enlighten me before I order new parts? :D
 
Your clue is in the way the parts are numbered. Notice that it goes 6, 7, 8, 9, 10, and then jumps to 18, which is at the very bottom of the
parts list. The #18 o-ring was added to later models (likely around 1990 or so), even though the description states that it is used at the
start of 4610 production. The o-ring was used in conjunction with a chamfered spacer #6 to eliminate the possibility of oil leaking between
the crank snout and the spacer. If you look at a 4600 parts catalog (link below), you'll notice that the #18 o-ring is not there, but
everything else is.

I've never seen a #6 spacer bad enough to need replacing. If it leaked right after you put the engine together, I'm going to guess that you
either damaged the seal putting it in, or else put it in backwards.

#8 is a dust seal. As far as I'm concerned, it does little good, and you could do without it.
4600 seal assy
 

Both photos are a little deceiving, they call #7 the dust seal and #8 the seal, but #7 is behind the seal.
I've always placed the dust seal #7 in the timing cover and then drove the seal #8 in against it.
I haven't seen a spacer worn to badly but I have flipped them around to get a fresh wear surface.
 
Thanks for clearing up the mystery of number 18 :)

But I still don't get why the drawing is showing that the dust seal goes on the inside. Should I make the O-ring upgrade?

I was very careful installing that seal, but I guess I have to do it again. I'm still replacing the spacer, I think I remember it was a little corroded.
 

No matter what the drawing shows the dust seal goes in the cover first so it's to the outside then the oil seal is drove in against the dust seal holding it in place.

Question! did you install the spacer and then put the timing gear cover on over it or did you install the cover and then push the spacer in place.
If you install the spacer first it's easy to roll the lip on the seal when you put the cover on.
 
As Destroked said, the dust seal goes on the outside - the pic is backwards. Do NOT install the o-ring, you'll squish it as flat as a
pancake. You need the chamfered spacer to use the o-ring.
 
Ok, new seal are ordered.

I think I installed the spacer first, but I'm not 100% sure. I'll do it the other way around this time.

Thanks for all your good answers as always :)
 
(quoted from post at 02:33:50 08/20/18) Ok, new seal are ordered.

I think I installed the spacer first, but I'm not 100% sure. I'll do it the other way around this time.

Thanks for all your good answers as always :)

Did you check to see if there is a groove worn in the shaft where the seal sits? Is so, you will need a speedy seal kit. Just went through that on a 51 chevy.
 

You don't need a speedy sleeve for these engines, the seal doesn't ride on the crank shaft, there's a spacer that goes between the crank gear and balancer that the seal rides on. If the spacer gets a wear grove in it you simply flip it around for a fresh wear surface or replace it.
 
Yes I have ordered a new spacer also, its cheap, and I don't want to the 4610 apart a 3rd time :lol:
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top