O Ring Replacement on Drive Shaft Question Mercruiser A1G1.

[1985 Century Mustang]

I have a question concerning the O rings that go on the Drive Shaft l, I'm doing my upper and lower seals on the outdrive .The seal kit came with Five O rings, 4 Black and One Orange. The Orange O ring is thicker than the other 4 and looks like it will fit fine. Do I use that one towards the yoke? Or should I just use the black one. Thanks

 

[Fun Times]

The bigger O-ring towards the coupler...Should look like the image below,

14	8M0204650	--------O-RING (.924 x .103)	29845	SS		$2.90	$2.83	2
14	8M0204654	--------O-RING (1.046)	35027	SS		$1.70	$1.66

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Genuine Mercury Marine, Mercruiser and Mercury Racing engines, parts, propellers. Authorized dealer with large inventory, great prices, fast shipping!

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[1985 Century Mustang]

The bigger O-ring towards the coupler...Should look like the image below,

14	8M0204650	--------O-RING (.924 x .103)	29845	SS		$2.90	$2.83	2
14	8M0204654	--------O-RING (1.046)	35027	SS		$1.70	$1.66

Genuine Mercury Marine parts, large inventory, fast shipping

Genuine Mercury Marine, Mercruiser and Mercury Racing engines, parts, propellers. Authorized dealer with large inventory, great prices, fast shipping!

www.mercruiserparts.com

View attachment 410486

Is that a Gen2 Outdrive? I only have 2 slots on my outdrive for O rings that are towards the yoke. Photo enclosed..

 

[Fun Times]

Yes. my mistake that's a gen 2.... Yoru's is item number 15 and uses 2 rings, https://www.mercruiserparts.com/bam/subassemblydetail/40589663/28214637

 

[1985 Century Mustang]

Yes. my mistake that's a gen 2.... Yoru's is item number 15 and uses 2 rings, https://www.mercruiserparts.com/bam/subassemblydetail/40589663/28214637

View attachment 410488

So I don't use the Orange O ring, Correct?

 

[1985 Century Mustang]

Also, the lower seal I got in the kit is hard plastic and rubber unlike the upper seal, is this normal? Photo below

 

[Fun Times]

So I don't use the Orange O ring, Correct?

Sounds Correct. What part number kit/s? did you receive?

The seal mentioned above, is that for the upper drive unit housing or lower gear housing?

Are you resealing both housings?

 

[1985 Century Mustang]

Sounds Correct. What part number kit/s? did you receive?

The seal mentioned above, is that for the upper drive unit housing or lower gear housing?

Are you resealing both housings?

The lower seal in the upper drive.