Output Shaft Seals

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   Group 18-01 

Part # A-958
Spicer # SP-62-463-2
 These were my take outs...probably original...Victor 49372...Leather Seal Material, backside view, These are about 1/2" thick. They get destroyed during removal.

Front View...

A selection of suitable replacements...showing front and back

Left to Right, 
#1 Generic Brand from a dealer 1/2" Thick, single seal lip, from 'Crown' Gasket set
#2 National # 473229 1/4" Thick, double seal lip
#3 Generic Brand 1/4" Thick, single seal lip, probably from 'Novak' rebuild set

I have been using the National seal. I think it is a better seal because of the double seal lips where they contact the yoke. The double lip seals the oil, like the single lip, but also has the forward lip to work with the felt dust seal to keep dirt away from the oil seal lip and possibly damaging that lip. The 1/2" thick seal that comes in the 'Crown' gasket set is single lip. I have used all three of these seals, they all work. I am not sure about their durability over time. The National seals I have had in service for seven years without trouble. 

This is the 1/2" Thick Single lip seal,

Also the # A-1134 Gasket from GROUP 18-04, shown below, I do not use. This paper gasket is not in all Parts lists for the 18 Transfer case. 

This gasket is probably not needed with the new style seals, even the one thick one I show which has a split back, would not leak like the old leather ones would with their split back. There is no way for oil to get through there on these new seals. This gasket is still sold however.
This is the spacer washer I use with the National Seal...to compensate for the thickness difference and to locate the seal lip in the correct place on the yoke sealing surface.

Edited by Howard - 07 Jan. 2010 at 9:52am

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Howard Members Profile Send Private Message Find Members Posts Add to Buddy List Member Sponsor Member Joined: 17 Feb. 2006 Location: New Mexico Status: Offline Points: 883	Post Options Post Reply Quote Howard Report Post Quote Reply Topic: Output Shaft Seals Posted: 06 Jan. 2010 at 7:50pm
	Group 18-01 Part # A-958 Spicer # SP-62-463-2 These were my take outs...probably original...Victor 49372...Leather Seal Material, backside view, These are about 1/2" thick. They get destroyed during removal. Front View... A selection of suitable replacements...showing front and back Left to Right, #1 Generic Brand from a dealer 1/2" Thick, single seal lip, from 'Crown' Gasket set #2 National # 473229 1/4" Thick, double seal lip #3 Generic Brand 1/4" Thick, single seal lip, probably from 'Novak' rebuild set I have been using the National seal. I think it is a better seal because of the double seal lips where they contact the yoke. The double lip seals the oil, like the single lip, but also has the forward lip to work with the felt dust seal to keep dirt away from the oil seal lip and possibly damaging that lip. The 1/2" thick seal that comes in the 'Crown' gasket set is single lip. I have used all three of these seals, they all work. I am not sure about their durability over time. The National seals I have had in service for seven years without trouble. This is the 1/2" Thick Single lip seal, Also the # A-1134 Gasket from GROUP 18-04, shown below, I do not use. This paper gasket is not in all Parts lists for the 18 Transfer case. This gasket is probably not needed with the new style seals, even the one thick one I show which has a split back, would not leak like the old leather ones would with their split back. There is no way for oil to get through there on these new seals. This gasket is still sold however. This is the spacer washer I use with the National Seal...to compensate for the thickness difference and to locate the seal lip in the correct place on the yoke sealing surface. Edited by Howard - 07 Jan. 2010 at 9:52am
	Howard F Jewett 1946 CJ2A #23353 43 GPW 106505 USA #20366014 43 Bantam Trailer T3 #14844

Mark N Members Profile Send Private Message Find Members Posts Add to Buddy List Member Joined: 28 Apr. 2010 Location: North Dakota Status: Offline Points: 34	Post Options Post Reply Quote Mark N Report Post Quote Reply Posted: 11 May 2010 at 9:46am
	the National you indicate is 1/4". Couldn't you use two of those instead of one seal and a washer?

Howard Members Profile Send Private Message Find Members Posts Add to Buddy List Member Sponsor Member Joined: 17 Feb. 2006 Location: New Mexico Status: Offline Points: 883	Post Options Post Reply Quote Howard Report Post Quote Reply Posted: 16 Feb. 2011 at 8:52pm
	Hi Mark, Sorry about being soooo long to respond to your question about doubling the seal. I also considered the idea...however as I recall two will not fit properly and place the sealing lip(s) in the correct location(s) I also recall some interferance with the yoke felt as well. The use of a Speedie Sleeve to repair the yoke seal surface is also limited for width in this area...I have forgotten the exact scenerio but It won't work correctly ... Edited by Howard - 16 Feb. 2011 at 8:53pm
	Howard F Jewett 1946 CJ2A #23353 43 GPW 106505 USA #20366014 43 Bantam Trailer T3 #14844