Parts Needed To Replace Hub Assembly And/Or Axle For 1987 Mastercraft Prostar Boat Trailer
Question:
I have an 87 mastercraft prostar with what I assume is a matching mastercraft trailer. I had a set of bearings go bad and have substantial spindle damage and need to replace a hub assembly as well. What parts would I need for repairs? The current spindle is welded in and I am thinking a new axle would be the fastest easiest repair. Thanks.
asked by: Andrew
Expert Reply:
Based on the information you sent, you will need to find the size of your bearings, weight capacity of your trailer and axle, and your bolt pattern.
You can determine your bearings size by either finding the stamped part number on them or by measuring them. To measure them, use a digital caliper like Item # PTW80157 to measure the spindle at the bearing seats. Measure both the inner and outer bearing seats on the spindle as well as the spring seat to get the most accurate measurement possible so that you find the correct replacements. I have linked articles and pictures to help. With this information, I can recommend replacement bearings and hubs.
Given that your spindle has substantial damage, I recommend considering the replacement of the axle and all of its related components. You will need to find your axle's weight capacity, spindle size, and length as well as the bolt pattern to replace it (normally sticker/plate on axle with most of information). For example, if your axle has a 3,500-lbs capacity axle with standard spindles that is 89 inches long then you could replace it with Dexter Trailer Axle Item # T3584F-8974. If you want to get everything in a kit (brakes, hubs, drums, race, seals, axle, etc.) like the Trailer Axle w/Electric Brakes Item # e43SR then you would also need to know the bolt pattern.
Send me more details on your trailer and axle and I will make a correct recommendation for everything you need.
Links to additional information and videos attached.
Products Referenced in This Question
Trailer Axle w/ Electric Brakes - Easy Grease - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs
- Trailer Axles
- Leaf Spring Suspension
- Easy Lube Spindles
- Electric Brakes
- 3500 lbs
- 5 on 4-1/2 Inch
- 74 Inch Long
- 89 Inch Long
- No Drop or Lift
- etrailer
more information >
Dexter Trailer Axle Beam with Standard Spindles - 89" Long - 3,500 lbs
- Trailer Axles
- Leaf Spring Suspension
- Standard Spindles
- No Hubs
- 3500 lbs
- Spindles Only
- 74 Inch Long
- 89 Inch Long
- No Drop or Lift
- Dexter
more information >
Product Page this Question was Asked From
4" Carbon Fiber Digital Caliper
- Hand Tools
- Measuring and Layout Tools
- Digital Calipers
- Carbon Fiber
- Performance Tool
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: CE Smith Trailer Axle w/ Idler Hubs - 5 on 4-1/2 - 57-1/2" Long - 1.8K
- Shop: 3-Leaf Slipper Spring w/ Radius End for 1,500-lb Trailer Axles - 24-5/8" Long
- Article: How Much Does a Boat and Trailer Weigh?
- Search Results: shackle kits
- Search Results: aps3se
- Search Results: ce23102
- Search Results: axel
- Search Results: axel kit
- Q&A: How to Measure for the Correct Replacement Trailer Axles
- Shop: Shackle Bolt with Locknut for Double-Eye Springs - 3" Long
- Shop: Step Bolt For Double Eye Springs - 9/16" Diameter - Plain - 3" Long
- Shop: CE Smith U-Bolt Kit for Mounting 1-1/2" Square Trailer Axles - 3-3/8" Long U-Bolts - Zinc
- Shop: Shackle Bolt For Double Eye Springs - 9/16" Diameter - Plain - 3-1/4" Long
- Shop: Spring-Eye Bolt with Locknut for Slipper Springs - 4" Long
- Search Results: fulton
- Q&A: Replacement Brakes and Bearings for 1993 Mastercraft Boat Trailer
- Q&A: How to Determine Replacement Wheel Bearings for Forest River Travel Trailer
- Video: etrailer Trailer Brakes - Hydraulic Drum Brakes - AKUBRK-35 Review
- Q&A: Tips for How to Identify a Trailer Axle
- Search Results: mastercraft~trailer
- Q&A: Hub And Drum Replacement for 90865 Rockwell Hub and Drum
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Q&A: Seal With Dimensions to Replace 171255UC
- Article: Trailer Tire Sizing
- Video: Timbren Axle-Less Trailer Suspension System Installation
- Shop: Trailer Wiring
- Article: How to Choose the Right Trailer Hitch Class
- Shop: Brake Controller
- Q&A: Replacement Clearance Lights Needed for GLO-BRITE 122R and 122Y Lights
on Hand Tools
