CAT B,C replacement covers for AFRC and FF primer - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 3 (permalink) Old 12-04-2011, 04:33 PM Thread Starter
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CAT B,C replacement covers for AFRC and FF primer

If you want to completely remove the AFRC, CAT p/n 8N-3799 is the cover to replace it. Why not (no pun intended) you probably have it set at the smokiest setting anyway?!
You'll need the big yellow o-ring and the smaller 3 ones and a 5/16 Dia X 3/8 L X 24 tpi bolt to plug a oil port on the lower end, block side of it. And a 1/8" NPT plug to plug the intake manifold line hole. Use the short 2 old adjustment cover bolts to install the new cover.

Credit to Ynot for the heads up on this piece.



Do away with the fuel filter primer pump.
CAT p/n 6N4414 and 1P-0436 gasket is the replacement cover.

Whatever your reason to eliminate the primer. Potential source of air leak or In my case I use a Fuel Preporator which fills all the filters.

A tip is to drill the passage in the cover and filter head to 3/8".

Credit to Charlie Eckstam - www.pureflowtechnologies.com/

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post #2 of 3 (permalink) Old 01-26-2012, 05:15 AM
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I did the removal of the hand primer and drilled it out, but I put the hand primer in a plastic bag and keep it in the toolbox in the truck just in case.
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post #3 of 3 (permalink) Old 02-04-2012, 06:10 PM
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Parts list for AFRC cover.
8N-3799 cover
(2) 5B-7040 (1/4-20 X 1'') or 5P-6935 and 5P-0537 washers like I did, which are
the same ones in the small AFRC cover.
4J-7533 Seal o-ring (for plug below) instead of 5/16x24 bolt as stated in
earlier posts)
9S-4180 plug
8M-8515 seal o-ring
5P-6620 seal o-ring
300-5879 seal o-ring
8J-8343 seal o-ring
9F-2247 1/8 hex pipe plug for line going to manifold.
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