Rear Hub Seal F60S LAAT

[Lynn Eades]

Tony means BB-1175-C.

The 4 digit number (1175) in the middle is a base number and if you get the prefix or suffix wrong, you get a different hub seal for some other type of Ford. These seals have a tin extension that drops any leaked oil into a tin shield, which lets that oil run to the back of your brake backing plate, through a hole. It only works as a tell tale if the hole is clear. The bearings are supposed to be grease packed, so that an oil leak means oil has travelled through the outer and inner hub seals from the diff. There is normally an outer seal that stops the diff oil and grease mixing.

[Hanno Spoelstra]

Hello Mark,

Please see the thread Modern part numbers for CMPs. Best to start at the last page for the latest updates and/or use the "Search this Thread:" feature.

[rob love]

Originally Posted by Lynn Eades

Tony means BB-1175-C.

There is normally an outer seal that stops the diff oil and grease mixing.

On a chev truck...yes. But on a Ford there are inner axle seals that are to prevent the oil from travelling to the bearings. You have to split the banjo to get to them.



The chev ones are used on the universal carriers, and can be fitted to the trucks. They are somewhat hard to find. There is a guy on ebay in Australia that sells them for a very reasonable $5 each.

[Jacques Reed]

Hi Mark,

A Google search came up with a Timken number from another Ford forum and the attached link which may help.

I haven't got one handy to check measurements but photo of it looks the same as the BB 1175. Timken numbers are often used as the industry standard.

https://www.motionindustries.com/products/sku/01295087

Cheers,

[rob love]

I always had it as a National 5751, but there has been so much takeover in the seals and bearings manufacturers in the past while, I can't keep up with it anymore.



Here is a link to the outer wheel seals for those who use them.
https://www.ebay.ca/itm/284800333547...IAAOSwLU9hT~X-

[Lynn Eades]

Rob, for a trip down memory lane there is a thread:
MLU FORUM > MILITARY VEHICLES > The Carrier Forum. Rear axle seals.
FORD Timken axles as found in a carrier or civvy axles do not have seals in the axle tubes and do not have a machined surface on the half shaft for a seal to run on. There is also no specific stepped area inside of the rivets that a seal might sit against. (I have a carrier diff in pieces at the moment) I assume the F60S LAAT is the same??? (other than the ratio)
There are obviously two types of outer seals (leather and metal- see the other thread) and it seems that in some applications there was never an outer seal fitted. I don't know of a variation that has tube seals, but I am a learner.

[rob love]

On my KL, which I did back in the 90s, I opened the axles to replace the inner seals. If I recall correctly, on the front axle you need to separate the axle in order to do the long side....the short side could be done from the outside. It was a PITA, and theoretically you would need the correct thickness gasket as that sets the backlash for the differential.



I just checked a 3 ton manual sitting behind me, and group 4702 is for those seals.....4 used on the Ford split type axle and located right next to the differential bearings.
The UCs for some reason did not use that method and instead used the GM seal in between the adjusting nuts for the wheel bearing.

[Mark Towers]

Thank you all for your help , useful links and support, your advise is very much appreciated.

I will endeavour to order the seals over the weekend and hope to have my lorry rolling by the end of the summer.

I will report back soon.

Kind regards

Mark