Rear axle seals

[Marc van Aalderen]

Maurice & Hanno,

I have emailed some scans from the British Chilwell Catalogue and manual for the UC to you both that show these parts very well. I could not post as the scans are 3Mb.

Cheers,

[Maurice Donckers]

Hanno your truck should have them . The seal we are talking about is the seal on the picture from Lynn. it is a metal washer with a leather lip ., there is no spring in it to expand it just a washer with a leather surround .
Marc in your exploded view, I cant see which way it is pointing , Chev manual is not clear , Ford not , and carrier is also not pointing it out , because they are drawings.

[Marc van Aalderen]

Maurice,

If I look at the seal it is an U-shape and cylindrical on the outside. It falls over the outside of the steel plate with the U groove. Because it is cylindrical on the outside diameter it shouldn't matter which way you install it? It is only to hold the grease in so not very critical if it doesn't seal a 100%. It is called: Retainer, grease, shaft (split ring). I have a couple NOS in my workshop but will not be there till Saturday. If you want I can have a look at them and get back to you.

Cheers,

[Richard Farrant]

Originally Posted by Marc van Aalderen

Maurice,

If I look at the seal it is an U-shape and cylindrical on the outside. It falls over the outside of the steel plate with the U groove. Because it is cylindrical on the outside diameter it shouldn't matter which way you install it? It is only to hold the grease in so not very critical if it doesn't seal a 100%. It is called: Retainer, grease, shaft (split ring). I have a couple NOS in my workshop but will not be there till Saturday. If you want I can have a look at them and get back to you.

Cheers,

Marc,
I believe that "mechanical seal" is the British version, the Canadian one has the leather lip, interchangeable, the plate is also a locking device for the inner hub nut which has a peg / dowel in it. A good seal due to the stepped joint on the U shaped ring.

regards Richard

[Hanno Spoelstra]

Originally Posted by Marc van Aalderen

I have emailed some scans from the British Chilwell Catalogue and manual for the UC to you both that show these parts very well. I could not post as the scans are 3Mb.

Thanks Marc,

I've grabbed some of the pictures in your scans, see attachments.

The "Retainer, grease, shaft (split ring)" you mention is no.54 in the first drawing.

Hanno

[Maurice Donckers]

Hanno and Marc these are the British seals . T he ones used on Canadian CMP`s and canadian carriers have a lip which faces to one side or the other

[Hanno Spoelstra]

I would mount them so they keep the grease in.

Where can you buy them?

[Maurice Donckers]

Maybe, Dirk Leegwater. Set up for bearing is first hexagon nut with pin , then lock washer, then that seal , and finally another hexagon plain nut to lock everything .
I always put these seakl back in the*way they came out , but now because they were both different in , it made me think about how they realy should go in , most vehicles I worked on had them the way in to keep the grease in the Bearings.

[Lynn Eades]

Hanno the modern grease is not going to move, where as the oil might. I would put mine in to keep the oil out. (i have said already that the need for a seal at all, is dependant on how steep the sidings are that you might run / park on.
As the carrier is very likely to throw a track sidling a hill, I would be inclined to not worry too much about which way it is fitted. It is recommended to a ascend or decend hills directly, rather than sidling
I believe it was made to keep the oil out(of the wheel bearings) and limited to the diff and axle tube.
Paul, me and my photos are in another country, from my carriers ( a bit like you being in Poland) so can't help with the physical stuff.
Phill, sorry, I can't help.

[Michael R.]

Ford Canada calls for four (4) of the same seals in the rear axle. (EDIT NOTE: Info Lynn E., an error in the manual, the inner and outer seals are not the same part or part number)

The Canadian manual FUC-03 did call for the standard British seal, LV3/FD BB 4245-B. However, when stocks were depleted, the Canadian seal was to be supplied. That seal shows up with two different Canadian part numbers, C01T-4702 being the final replacement of both LV3/FD BB 4245-B and C01Q 4702 B.

Looking at Chilwell, you can see the rear axle grease retainer in the selection of different country supplied part numbers. As Hanno indicated, the illustration # 54 points to British part number LV3/FD BB 4245-B. In Chilwell, the American part number is not GAE 4702 as found in FUC-03, but is BB-4245-B, same as the Chilwell part number.

(Edit)

(Edit)

[Lynn Eades]

Michael, your pictures are to small/ low resolution for me to see.
The inner seals you are referring to, I believe go in the axle tube, the outer being different. The inners are designed to keep the diff oil in the diff and the axle tubes dry. This is a different spec to the axles we have been discussing prior to your post. The earlier axles never used any of those inner 4702's, and the diff oil could inhabit the axle tube. The use of these seals would require a seal track to be finished on the inner end of each half shaft, and a sized area in the housings, which I don't think the early housings are finished for.The 4702 refers to an axle seal the prefix and suffix define the difference between the two. The one available from Macs is the inner one, which yes, is installed with the lip facing in toward the diff, to keep the oil in the diff.

So far we don't have anything on the leather outer seal, other than my photo. it's counterpart being variously; (from Michael's post)
CO1T 4702
O1T 1124
BB 1124 B