How to Determine the Correct Replacement Grease Seals for a Trailer

Question

Question:

Will re-pack my bearings on rv. Need to replace grease seals. As best as I can measure, the O.D. is: 3 7/16 inches. I.D. is: 2 7/16 inches. Which seals to buy?

asked by: Charles B

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Expert Reply:

Measuring running gear parts such as seals or bearings requires an accurate measurement to the thousandth inch. This would require dial or digital calipers. Or, since it sounds like you have the hub off already, and because seals can be hard to measure, I can determine the correct seals by the bearing numbers stamped into the inner and outer bearings.

expert reply by: Michael H

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Answer 1

The spring you are referencing is what makes a grease seal a double lip seal. The #10-1 is a single lip seal, and the 10-10 part #RG06-090 is the double lip seal.

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Answer 2

You can verify that the 10-19 grease seal included in Bearing Kit #BK2-100 is the correct one for your spindles by taking two measurements. First you want to measure the rear hub bore where the seal is inserted. The seal's outer diameter needs to…

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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

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 5

Hey Bryan, that's a good question. The pricing can definitely be misleading, but I wouldn't use it to judge the quality of the tire. A lot of that comes down to promotions, inventory, and whether you're looking at a tire by itself or…

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Answer 6

You can use leaf springs that are rated higher than the axle without any issues as long as they measure the correct measurement for your trailer. For example the 6-leaf double eye spring for 7,000 lb axles part #e64SR measures 24-7/8" eye to…

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Answer 7

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 8

Hi Calvin! All of the pre-greased hubs/drums, like the Terran Industries Trailer Hub and Drum Assembly - 3.5K Axles - 10" Diameter - 5 on 4-1/2 #TX68VJ, come with bearings made overseas and are all basically the same quality. At least that I…

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Answer 9

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 10

Hey Ian, great to hear from you again! The differences between the MORryde CRE3000 #MR87ZR and AllTrek 4000 #MR89DR that fit a 33" wheelbase is the height between the hanger and equalizer bolts, and the amount of travel the suspension style will…

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Answer 11

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 12

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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How to Determine the Correct Replacement Grease Seals for a Trailer

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