Topic: 1957 Johnson QD18 10 hp – Antique Outboard Motor Club,Inc

This topic has 25 replies, 8 voices, and was last updated 1 month ago by Michael Purpura.

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January 11, 2024 at 4:50 pm #283847
Michael Purpura
Participant
US Member - 2 Years
I wish I could search these forums because my question has probably been answered hundreds of times. I have a Johnson 10 hp, 1957, QD18. I ordered a seal kit for the lower end and one seal is the wrong size and it is missing an O ring. The seal I need has an O.D. of 1.250″, it fits over a shaft that is 0.625″ and measures 0.3100″ thick. If anyone has a number for this seal I would love to have it.

The O ring measures approx. (it is a little rubbery), I.D. 1.790, O.D. 1.440″, and thickness of 0.119″. If anyone has a source for these items let me know.

Also let me know how to search these forums so I don’t have to ask a question that has already been answered.

Best regards,

Mike
January 11, 2024 at 5:13 pm #283849
Steve Martin
Participant
US Member
I use the SKF seal finder website below for seals.

https://www.skfextranet.com/crsealsfinder/
January 11, 2024 at 5:24 pm #283851
crosbyman
Participant
Canada Member - 2 Years
info call these folks up they probably have all you need

https://www.vintageoutboard.com/collections/johnson-evinrude-water-pumps-impellers-lower-units/products/22-30001-gear-case-seal-kit

Joining AOMCI has priviledges 🙂
January 11, 2024 at 7:00 pm #283852
frankr
Participant
US Member
The original seal was part number 302495
January 11, 2024 at 7:34 pm #283854
crosbyman
Participant
Canada Member - 2 Years
I have used SKF seals actually I installed 2 back to back on one oldy and since they were not SS or bronze I coated the outside one with a couple of layers of latex based glue to offer some protection from a freshwater only environment

seems to work ok. ( to many oldys… can’t kep track 🙂 )

Joining AOMCI has priviledges 🙂
January 12, 2024 at 2:39 am #283859
John Gragg
Participant
US Member
I was able to get a 302495 for my QD15 at marineengine.com. A bit pricy I will say, the suggestion to search the SKF site is a good one.

If your o-ring is the same as mine, it will be a 302493. Frank might be able to verify that for you. I found a good source on flebay, about $9.

Good luck

Best Regards

John Gragg
RIverside, CA

Just starting in the hobby, please be patient.

48 Sea King 5hp GG9014A
49 Sea King 5hp GG9014A
48 Johnson TD20
49 Johnson TD20
54 Johnson QD15
55 Johnson CD12

1 user thanked author for this post.

Michael Purpura
January 12, 2024 at 5:51 am #283861
Steve D
Participant
The 302493 o-ring number is correct. The 302495 seal is also SKF 6280 also on ebay right now for just under $20. Any SKF 6280 I ever bought was stainless.

I’m guessing you received the smaller diameter seal in that seal kit. I bought some bushings a while back from a member who made them that allows you to use that smaller seal in that bearing head.

If you want to do that I can send you one…email me at sdpiazza (at) aol.com
January 12, 2024 at 10:21 am #283871
Michael Purpura
Participant
US Member - 2 Years
Thank you Steve. I did find the CR 6280 on ebay (Stainless) and bought it. Thanks too for the parts list.
January 12, 2024 at 10:24 am #283872
Michael Purpura
Participant
US Member - 2 Years
Thank you for the info. I found the CR6280 in stainless and ordered it. Marine Engine is sending the right O ring to me. Problem solved.
January 12, 2024 at 10:26 am #283875
Michael Purpura
Participant
US Member - 2 Years
Thank you Steve, and thanks to everyone that helped me out on this seal and o-ring problem. If I can keep the motor maintained it will outlive me.
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