How do you change the bearings on a boat trailer?

Asked By: Fayrouz Yturriarte | Last Updated: 1st January, 2020
Category: automotive auto parts
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Similarly, it is asked, how often should boat trailer bearings be replaced?

We recommended to repack the wheel bearings on your trailer every 12 months or 12,000 miles. There is not a specific guideline as far as actually replacing the bearings. When repacking them with grease, you will also just want to check for any damage or wear and replace anything if needed.

One may also ask, how long do trailer bearings last? As long as the tire size is large enough(13 or 14 inch), bearings should last for many years given proper maintenance. Remove, clean, repack with grease, and reinstall using a new grease seal every year or two. I have Bearing Buddies that have been in for 11 Years.

Also asked, how do I know if my trailer bearings are bad?

Listen for any squeaks, grinding noises, clicking or any other sound emanating from the trailer wheels. Repeat Steps 3 and 4 for the opposite side of the trailer. If you hear any noises, the wheel bearing is defective or needs lubrication.

Are all trailer wheel bearings the same?

With standard bearings, the inner bearing is larger than the outer, but with parallel bearings they're the same size. For heavier-duty trailers there are 1.5 tonne, 2 tonne, 3 tonne sets.

37 Related Question Answers Found

Can you over grease wheel bearings?

There's no such thing as too much grease for bearings! You would not pack grease in the hub otherwise and not in the drum since the brakes would not be able to grab with grease in the hub. Grease caps, dust caps, and bearing protectors have to be installed right to avoid losing them.

How much does it cost to replace trailer bearings?

The average cost for a wheel bearing service is between $158 and $198. Labor costs are estimated between $140 and $178 while parts are priced between $18 and $20. Estimate does not include taxes and fees.

Do I need to repack bearings with bearing buddies?

When you use the Bearing Buddy Bearing Protectors like # BB2441, so you do not need to take apart the wheel hub and repack the bearings. The Bearing Buddy Protectors have a spring loaded seal that keeps the moisture and debris out of the bearings.

Do bearing buddies go bad?

Bearing going bad will start to raise temp on wheel before failure and you can pick it up when you are at a better place to change bearing, than at the side of the road.

Should trailer wheel bearings have play?


For adequate trailer wheel bearing maintenance, you need to check your bearings on a regular basis. Check wheels for side-to-side looseness – There should be a very slight amount of play in the wheel, typically 1/8-inch or less. If the wheels are loose or spin with a wobble, the bearings must be serviced or replaced.

How tight should trailer bearings be?

Pre Loading Bearings:
Tighten the spindle nut finger tight (until snug) and then with channel-lock pliers or a crescent wrench, tighten the spindle nut another 1/4 turn or about 15 to 20 ft pounds of torque.

How long does wheel bearing grease last?

A: Depending on the quality of the bearing, they normally last between 85,000 and 100,000 miles. Some premium bearings can be pushed to 150,000 miles.

How often should you grease bearing buddies?

For boat trailers, manufacturers recommend replacing the grease, which means removing, repacking, and reassembling each wheel on the trailer, every 3,000 to 4,000 miles, or annually even if you don't travel very far.

How often do you need to grease bearing buddies?

Expert Reply: Standard tapered trailer wheel bearings are recommended to be re-packed with fresh bearing grease about every year or every 12,000 miles under normal use.

What is the best grease for boat trailer wheel bearings?


Best Wheel Bearing Grease for Travel Trailer Reviews
  • Lucas Oil 10301 Heavy Duty Grease.
  • Sta-Lube SL3121 Wheel Bearing Grease.
  • Timken GR224C Wheel Bearing Grease.
  • Lucas Oil 10682 Marine Grease.
  • Star Brite Wheel Bearing Grease.
  • LubriMatic 11404 Marine Trailer Wheel Bearing Grease.

How do you size a boat trailer?

Size Matters.
Trailers are classified by length and weight. The length is easy to figure out. Use a tape measure or contact the boat manufacturer. The weight includes more than just the boat – remember to add in the engine, weight of fuel, water and gear.

What is the best marine grease?

Best Marine Grease
  • Mercury/Quicksilver 2-4-C. 28.57%
  • Yamalube Marine Grease. 22.86%
  • Green Grease. 20.00%
  • Lucas Marine Grease. 11.43%
  • Walmart Super Tech Marine Grease. 17.14%

How do you grease bearing buddies?

Expert Reply: Using a Bearing Buddy to grease a hub can easily allow you to over fill the hub and blow out a seal. The zerk fitting where you insert the grease is sitting on a spring loaded disc or piston that will move outward away from the hub as grease is added. Push on the edge of the piston with your finger.

How often do you grease boat trailer bearings?

Time Frame. Wheel bearing maintenance frequency depends on the trailer type, wheel size, and average load weight. Some manufacturers recommend inspecting and greasing an RV's wheel bearings once every season, or at least every 10,000 miles. But boat trailers with small wheels require re-packing every 2,000 miles.

How do I know what size bearings to get?


You can measure the dimensions of a bearing by using a vernier caliper like the one below or measuring accurately with a ruler. All bearings will have an inner diameter (ID), an outside diameter (OD) and width (W). Bearings are sometimes referenced by these dimensions, in that order: ID x OD x W.

What are the parts of a boat trailer?

Boat Trailer Parts
  • PWC/JET SKI TRAILER PARTS.
  • BOAT TRAILER ROLLERS & ROLLER HARDWARE.
  • BOAT TRAILER BUNKS & BOW GUIDES.
  • BOAT TRAILER WINCHES, STRAPS & ACCESSORIES.
  • BOAT TRAILER FENDERS & FRAME HARDWARE.
  • BOAT TRAILER TIRES, RIMS & ACCESSORIES.
  • BOAT TRAILER TONGUE JACKS & DOLLIES.
  • BOAT TRAILER DISC BRAKES & BRAKE PARTS.

How do I know what Trailer Axle I have?

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…