How To Determine Bearing And Grease Seal Size For A 1987 Boat Trailer

Question

Question:

I have a 1987 Basstracker TX17 with the original trailer. The inside seals are leaking grease. Id like to change the hub assembly to freshen up the trailer with new bearings, hubs and seals. Due to age I cant identify the correct numbers. Can you help?

asked by: Steven B

0

Expert Reply:

Yes, since we can't look up the numbers you'll just have to remove the hub and measure the journals of the spindle at points B, C, and D in order to find the inner diameter of the grease seals. You can then measure the hub for the outer diameters for the grease seal and bearings. Since these numbers are very precise you'll need to use a set of calipers # PTW80157 to get an accurate measurement. I'll also need to know the bolt pattern for your wheels so I can find the correct replacement hubs. If you know the axle capacity it will help narrow down the search as well.

If you can get me these measurements I'd be happy to find the correct replacement parts to get your trailer back up and running.

expert reply by: Kevin C

0

Spindle/Hub Measurement Guide
(click to enlarge)

Answer 1

I wish we could help but none of our hubs fit a spindle that is 1-1/4 inch in diameter all the way across. If instead the spindle was 1-1/16 inch diameter for both bearings you'd want the part #8-258-50UC1-EZ which is standard for a 2,200 lb…

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Answer 2

If the axle tag on the trailer does not include the axle capacity then you'll have to pull the hubs and either measure the bearings and seals or record their part numbers. The most common bearing combo is a L68149 (1.378" inner diameter) and…

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Answer 3

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 4

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 5

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 6

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 7

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

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Answer 8

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 9

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 10

There typically aren't any part numbers stamped onto the trailer spindle that can be used for identification. There are however numbers stamped onto the hub most times which can be used for identification. The TDE46210 tells me you have a 3,500…

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Answer 11

The BTR and BT8 denotations refer to the spindle, not the trailer hub. The difference between a BTR and BT8 spindle is that the BTR spindle uses a 1.063" diameter L44649 bearing and the BT8 spindle uses a 0.99" diameter L44643 bearing. In…

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Answer 12

You will need to measure the diameter of the spindles where the seal and bearings ride. Check out the picture I attached that shows where this is. You will need an exact measurement so either a digital or dial caliper will be needed. To pick out the…

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How To Determine Bearing And Grease Seal Size For A 1987 Boat Trailer

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