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Discussion Starter #1
I'm replacing the center section on a 9" rear. And a long time ago I heard someone say that they didn't use a gasket when installing the pumpkin. That all they did was use a bead of silicone around the edge. Can you do this? When I've replaced a pumpkin, I've always used a gasket. But I don't have one laying around now. So can I use silicone or do I make a run to a parts store?
TIA

Rob
Member: Slightly Modified
66 coupe 302
66 fastback 351W
 

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Silicone is fine. Just make sure the surface is completely clean and oil free. Let it set for at least 4 hours before adding lube and you'll be just fine.

Hal
Love hard, drive fast, wear your seat belt.

PS, that's my 'bird...... My Mustang is too ugly to take pictures of yet........*G*.

http://www.teleport.com/~cosa/bird2.jpg
 

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Discussion Starter #3
Thanks. It was a long, long ago that I heard that and couldn't remember fer sure.

Man, I do love this new forum.....got an answer before I could even move my butt out of the chair. /forums/images/icons/smile.gif

Rob
Member: Slightly Modified
66 coupe 302
66 fastback 351W
 

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hehe...... that's only 'cause it was an easy question...............*G*.

Hal
Love hard, drive fast, wear your seat belt.

PS, that's my 'bird...... My Mustang is too ugly to take pictures of yet........*G*.

http://www.teleport.com/~cosa/bird2.jpg
 

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I too will be replacing the pumpkin on my 9" rear. Probably this weekend. I got a new (lower) gear set and a Tru Track limited slip. I asked this same question of Randy's Ring and Pinion http://www.ring-pinion.com/ where I bought the unit. Rats, why didn't the URL show up as a hyper-link? Sorry.

They said the silicone would be fine. You might want to check their site. They have some pretty good tech. info since randy writes a monthly magazine column for off-roaders.
 

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If your rear is a new or rebuilt unit, you should break it in first to prevent damage from overheating. After driving it for the first 15 or 20 miles, it is best to stopand let the differential cool before proceeding. Maybe take a lunch break. Then return home.

After the first 500 miles, change the 90 wt. gear oil to remove any metal particles or phosphorous coating that has been losened from the gear during the beak-in / gear setting. During this first 500 miles, avoid overloading, heavy use or over heating.

Ford 9" rears can be difficult to fill completely with gear oil. Most 9" housings hold at least 3 quarts and sometimes as much as 5 quarts. Take your time and be sure that the oil has settled into all of the crevices.

Good luck and have fun!
 
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