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Parts Needed To Convert Triple Axle Boat Trailer With 3,500LB Axles From Grease to Oil Lube  

Updated 06/09/2024 | Published 05/28/2024

Question:

Im interested in converting my boat axles to oil bath. It has 3 3500 axles with drum surge brakes. Can you help

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Expert Reply:

First you are going to want to confirm the bearings, grease seal and cap used on your axles. Some older and boat specific 3,500lb axles use different size seals and caps. The Kodiak XL ProLube Kit # XLPROLUBE1980KIT you found fits the standard 3,500lb axle sizes. The grease cap fits a 1.98" hub bore and the included seal fits a 1.72" spindle landing for the seal. If this matches what you have you will need 3 of these kits and I recommend getting 6 of each Inner Bearings # L68149, Inner Races # L68111, Outer Bearings # L44649 and Outer Races # L44610. This will be much easier than trying to clean all the grease out of your current bearings and the new races ensure the new bearings wear in correctly with the races.

If you find you have a different seal size or hub bore please let me know so I can verify the correct parts needed.

expert reply by:
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Bud M
Wayne profile picture

Wayne

6/1/2024

If I get you the seal number, will that tell you what the axle spindle size is? I have spare bearings and seals already.

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Bud M.

6/1/2024

@Wayne Yes, I should be able to get the seal size off its number.
Wayne profile picture

Wayne

6/5/2024

The seal number is a CR seal 16657

Bud M. profile picture

Bud M.

6/9/2024

@Wayne Currently we only have the Grease Seal # 168233 as a replacement for your CR 16657 seal. We do not have a oil specific seal to replace your current seal. You may be able to find one locally to fit your dimensions.
Wayne profile picture

Wayne

6/9/2024

@BudM Are youvsaying there isn't a way for me to convert to oil bath bearings for my trailer?
Bud M. profile picture

Bud M.

6/9/2024

@Wayne No, simply we do not have the correct oil seal for your hub. This is common on some older hub/spindle combinations.

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