Farm Equipment - D17 f gaskets

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D17 f gaskets

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=174607
Printed Date: 11 Sep 2025 at 7:48am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: D17 f gaskets

Posted By: Doobletango
Subject: D17 f gaskets
Date Posted: 22 Sep 2020 at 6:35pm

So I have these f gaskets in my gasket set. I read on another post to use them only if the main cap is shimmed. I had nothing under my main cap upon disassembly.
The post also said to apply a small bead of silicone under the main cap if the cap was not shimmed. Why would I do this to the rear but not the front also? These AC engines are really testing my engine knowledge, but I want to make sure that I have this thing together right the first time.
Thanks guys!

Replies:

Posted By: DrAllis
Date Posted: 22 Sep 2020 at 6:45pm

The front main cap is INSIDE the engine. The rear cap is exposed. I never use the F gaskets and don't really care what others do or don't do. I use oil resist RTV where the F gaskets go and under the main cap a little bit and on the ends of the rear seal tips. Rear seal glued in place (bottom of groove) with 3M8001 top and bottom. Thinly wipe grease on the inside of the rear seal for lube keeping away from the split points. Install the pan gasket parts correctly !!

Posted By: Doobletango
Date Posted: 22 Sep 2020 at 6:55pm

I see what you’re saying now. *smh*
Is there a specific torque on the timing cover bolts?

Posted By: DrAllis
Date Posted: 22 Sep 2020 at 7:05pm

Just whatever a bolt that size should be.

Posted By: Doobletango
Date Posted: 22 Sep 2020 at 7:13pm

Thanks! Just making sure.