The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - How to change gasket: Timing cover I6-250

68gmsee · 11-26-2014, 05:32 PM

Pop out from inside to the outside. If you have the cover off use a backing of some kind when tapping it back in. I use couple of pieces of 2X4. If it's on the engine just tap it in carefully so you don't damage the edge. Also, I coat the edge of the seal with gasket sealer just in case.

Another thing you can do if the cover is off is to leave it loose so the seal centers itself on the crankshaft and slowly tight all around until snug before tightening all the way down.

Forgot to add: As an FYI. Installing it without removing the cover is not recommended. I've only done it once and it went in okay.

11-26-2014, 05:32 PM	#4
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: How to change gasket: Timing cover I6-250 Pop out from inside to the outside. If you have the cover off use a backing of some kind when tapping it back in. I use couple of pieces of 2X4. If it's on the engine just tap it in carefully so you don't damage the edge. Also, I coat the edge of the seal with gasket sealer just in case. Another thing you can do if the cover is off is to leave it loose so the seal centers itself on the crankshaft and slowly tight all around until snug before tightening all the way down. Forgot to add: As an FYI. Installing it without removing the cover is not recommended. I've only done it once and it went in okay. __________________ 68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...