Bearings for 86 SN 2001 Trailer
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=27670
Printed Date: May-07-2024 at 10:21am
Topic: Bearings for 86 SN 2001 Trailer
Posted By: pepatrick
Subject: Bearings for 86 SN 2001 Trailer
Date Posted: August-30-2012 at 2:20am
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I have looked..so shoot me if I missed it. I am looking to replace my bearings on 86 SN 2001 trailer. It is the original trailer with 6 lug hub. What do I need? Does this trailer have brakes? I will have the boat off of it most of this weekend so seems like a good time to replace the bearings, brakes, leaf springs or anything else prone to failure. The main reason is grease shot up all over my boat a few weeks ago. I would rather replace them now then wait for them to lock up driving down the road. Any help would be appreciated. Thanks Philip |
Replies:
Posted By: BuffaloBFN
Date Posted: August-30-2012 at 8:53am
Bang.  ------------- http://correctcraftfan.com/diaries/details.asp?ID=2331&sort=&pagenum=12&yrstart=1986&yrend=1990" rel="nofollow - 1988 BFN-sold "It's a Livin' Thing...What a Terrible Thing to Lose" ELO |
Posted By: gn6027
Date Posted: August-30-2012 at 11:01am
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Replace ALL the leaf spring bolts & nylon bushings. Use Grade 8 bolts. I had an original bolt fail on my '87 this summer. Best way to know what size bearings you have is to pull them out and look at the numbers. Plus, you then know if you have brakes, and if any of the brake hardware needs to be replaced. Glen ------------- GN6027 http://www.correctcraftfan.com/diaries/details.asp?ID=2562 - 1987 Ski Nautique 2001 |
Posted By: Jllogan
Date Posted: August-30-2012 at 11:12am
 ------------- http://correctcraftfan.com/diaries/details.asp?ID=5792&sort=&pagenum=1" rel="nofollow - 1986 Ski Nautique 2001 |
Posted By: Jllogan
Date Posted: August-30-2012 at 11:16am
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http://www.correctcraftfan.com/forum/forum_posts.asp?TID=25386&title=trailer-bearing-and-seal-replacement" rel="nofollow - How to thread http://www.correctcraftfan.com/forum/forum_posts.asp?TID=15461&title=need-trailer-bearings" rel="nofollow - What to buy thread Dont waste your time with the sites search feature. Use google, type site:correctcraftfan.com whatiamsearchingfor ------------- http://correctcraftfan.com/diaries/details.asp?ID=5792&sort=&pagenum=1" rel="nofollow - 1986 Ski Nautique 2001 |
Posted By: 8122pbrainard
Date Posted: August-30-2012 at 11:21am
Glen, Be careful with this. Most people assume grade 8 is best not understanding the tensile strengths of bolts. In order to get the tensile up for a 8, they also become brittle and in shear will break at times. In our stamping dies, there are spots where the tool makers will drop down to a grade 5 since the 8's break. Stick with the bolts sold by the trailer parts supplies. Did someone tell you to use grade 8 or are you just assuming they would be better? ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
gn6027 wrote:Posted By: Morfoot
Date Posted: August-30-2012 at 11:42am
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Here are the NAPA part #'s I have for replacement everything for a 87'CC trailer. I can't imagine a 86 is any different but you never know. They should work your trailer as well. This should get you started in the right direction. Inner Bearing 25580 Race 25520 Outer Bearing 15123 Race 15245 Oil Seal 47017 |
Posted By: Waterdog
Date Posted: August-30-2012 at 12:09pm
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Some trailers have brakes, most don't. You NEED to know before you hitch it up! ------------- - waterdog - http://www.correctcraftfan.com/diaries/details.asp?ID=3896&sort=&pagenum=2&yrstart=1978&yrend=1978" rel="nofollow - 78 Ski Tique |
Posted By: gn6027
Date Posted: August-30-2012 at 3:06pm
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Pete, The grade 8's came from a trailer parts supplier, but thanks for the tip. Glen ------------- GN6027 http://www.correctcraftfan.com/diaries/details.asp?ID=2562 - 1987 Ski Nautique 2001 |
Posted By: 8122pbrainard
Date Posted: August-30-2012 at 3:32pm
Glen, Then it sounds like you are good to go! The one that broke, was it a grade 8? If so, maybe the trailer supplies should rethink their bolts?  ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: Gary S
Date Posted: August-30-2012 at 3:52pm
Could have been a Chinese grade 8 ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: NAUTIQUEjunky
Date Posted: August-30-2012 at 4:41pm
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Looking at your pics on carpet redo your trailer doesn't have brakes I personally have never seen one with the factory option.. Don't waste your time on replacing springs like someone stated unless yours have (flattened out) you can source new spring hanger bushings if your hangers are worn and touching the frame with boat on trailer. ------------- 1977 MasterCraft Stars&Stripes 1994 Ski Nautique 2000 Super Air Nautique 1986 Ski Nautique 2001 1999 Sport Nautique gt40 current |
Posted By: gn6027
Date Posted: August-30-2012 at 9:29pm
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All 6 bolts were original CC. Still had red paint on them from the factory. I really don't know what grade the original bolts were. The heads were naked! No ANSI marks whatsoever. I really can't believe they would have been grade 1 or 2, they would have been much too soft for the load they see. The original nylon spacers were the hat style, but I went with full length bushings. %20" rel="nofollow - http://www.lowcostboatingstore.com/UCF-AMERICA-PE182-TYPE-I-BUSHING-78-OD-12-ID_p_18294.html I had trouble finding these as the 3/4" eyes in the leaf springs are non-standard or an older design/configuration. My trailer didn't have brakes from the factory, but I added them the year I bought her. They really make a difference using a Chevy Blazer/Trailblazer to pull her! Glen ------------- GN6027 http://www.correctcraftfan.com/diaries/details.asp?ID=2562 - 1987 Ski Nautique 2001 |
Posted By: 8122pbrainard
Date Posted: August-30-2012 at 9:38pm
Really too soft? "First, unlike tensile and yield strengths, there are no published shear strength values or requirements for ASTM specifications. The Industrial Fastener Institute (Inch Fastener Standards, 7th ed. 2003. B-8) states that shear strength is approximately 60% of the minimum tensile strength." BTW, The tensile of a grade 2 is 60,000 psi. Figure out the area of your bolt and the go by the 60% figure. Keep in mind there are two shear point on each bolt so you can multiply by two. I'd have to say something was misaligned for you to break that original bolt. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: gn6027
Date Posted: August-31-2012 at 3:10pm
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Perhaps I was a little quick to say grade 2 were too soft. Going back to fundamentals in static loading in pure shear, I calculate a factor of safety for grade 2 bolts > 16 (which really surprised me!). Dynamic loading effects and the wear created on the bolts as the rear shackles pivot which reduces the cross sectional area also need to be considered. For the modest difference in price; grade 2 @ $0.55, grade 5 @ $0.86 and grade 8 @ $1.33, grade 8 all the way to protect my baby! No alignment issue. Just a fatigue failure. See the pic of the bolt from the other side that was destined to fail as well! Glen  ------------- GN6027 http://www.correctcraftfan.com/diaries/details.asp?ID=2562 - 1987 Ski Nautique 2001 |
Posted By: pepatrick
Date Posted: August-31-2012 at 6:50pm
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Its 4 inches long and bends to the left. Dont think I would have posted that... It may not be big around, but its short.
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Posted By: mark c
Date Posted: September-12-2012 at 3:54pm
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Just to add a little more info on bearings If you have Dexter 8-213 hubs with 6 bolts (the numbers are cast into the rear face of the hub between the lugs) like my 87 DV-4 trailer the proper bearings are the; 25580 inner bearing cone 25520 inner Race 67048 outer bearing cone 67010 outer bearing race. The difference between a 67048/67010 outer and the 15123 cone and the 15245 outer race is the 15245 outer race is 2.441 " in diamer, and the 67010 is 2.328" in diameter. The 8-213 hubs have a step indside the hub about an inch back in from the hub face and the larger 15245 race won't fit over that step. |
Posted By: pepatrick
Date Posted: September-12-2012 at 3:58pm
| Actually got confirmation that the PO replaced the bearings along with new tires right before I picked up the boat in July..so I should be good to go for a while. |