The Stovebolt Site Forums The Parking Lot Big Bolts Oil Seals for a Timken H300 3ton

We are refurbishing a 48 453 with a duel speed Timken rear end and was wondering if there were any sources for the oil seals.
We have found other seals but are having a tough time finding these. Help!

I don't know a lot about the big trucks but Rob who runs the GMC site aquired a large AD truck last year. What a mechanic did for him was install oil seals that fit the shaft but had a slightly smaller outside diameter. The mechanic wrapped the outside with several layers of electrical tape and apparently that is a good fix that is commonly used.

Is there a name, and/or part number on the old seals. That will help with cross referencing.

Hy fireman290, if I'm reading your post correctly you're working with a double reduction Timken two speed. The following are the numbers I found for that rear axle
Pinion GM-2240314 = C/R 23841 = Napa NOS23841 $23.99
Inner rear wheel [hub] seal GM-2227352 = C/R 36314 = Napa NOS36314 $26.49
Outer wheel seal, two different options on this one late
with grease packed bearings, with shaft 4.063" and 5.506" O.D. = C/R 40590
Outer wheel seal early with shaft 3.938" and 5.506 O.D. = C/R 39423, seal with sleeve C/R 40360, or kit C/R 1219, hope that helps.

Sorry guys, I had to work today .I just got home. Thanks alot for the ideas and the #s. I realy fell in love with this old big bolt because it was the first fire truck out community owned and we were able to bring it home after 30 years. It is alot like Virginiafiretruck's story. When I am able to I will post some pics. This will be a labor of love for the few of us that love this truck. Thanks 3B, That is what we are working with. We have a man that has a 36' Gmc wreaker that has the wheel seals and I will get the numbers to him. He use to be the mechanic for the truck.

the bearings if i am correct were lubed from the transaxle oil, right? roller bearings recieved the oil through the end of the outer axle at each end.

Hey fireman290, I would indeed like to see pictures of the 450 series Firetruck. I'm particularly fond of the '47-'55 450 3 ton, & 470 3 1/2 ton Jimmies. Is there anyway you can get a couple of pictures of that '36 GMC Wrecker also. And 3B, Thanks for the part numbers.

I had to sign up on webshots. The post starts with the truck when it was new enjoy! We were able to find a maintenance manual
for the big bolt the manual covers fc 300 thru fcs450. quite informative. If I can help others through ths publication just get in touch. the pub # is x-4704

Nice truck.

Oh yeah, That's a "Beauty". Love that chrome grille. Think you can get photos of that '36 GMC Wrecker?

I'll see if he has some. in the meantime I have a curious issue.
the rear hub looks like the one in the top right hand corner of this pic http://rides.webshots.com/photo/2959912030102942578QjbtAf
there is a tag on the pinion gear drive shaft but it is hard to read the diaphram for the high low is about 45 degrees to the drive shaft, there is no tag in the glovebox. I hope 3B is out there? Is it a duelpreformance? Whare on the axle would the # be?

Sorry about that. I had to double check the axle - I found the seal No. we are needing,It is a 618M3-L CR. I'm not sure if there is a cross ref.# for it.

Go to a good bearing house with the axle tube & hub diameters & your old bearing. They can search by dimension. I'm sure you know this but pay attention to which is the air side & which is the oil side when re-installing. Seen a few guys forget that the oil side faces outboard on a floating axle inner hub seal. Nice pics!
Doug

Thanks desertdog, I have been overwhelmed by the bolters out there that want to help others get the classic back on the road