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Old 09-04-2018, 08:33 PM   #1
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Brake drum for 1984 T-2751

I've got brake drums that use bolt-style lugs instead plain old nuts. Never seen this type of set-up before. One the drums has stripped threads on one of the 5 holes. Any thoughts on how to fix it?

Any advice on how to ID the size for wheel bearings?
Attached Images
File Type: jpg Dexter Drum 8-207.jpg (127.3 KB, 8 views)
File Type: jpg Drum Inside.jpg (112.2 KB, 6 views)
File Type: jpg Drum ID.jpg (121.5 KB, 6 views)
File Type: jpg bearing.jpg (64.9 KB, 6 views)
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Old 09-04-2018, 10:09 PM   #2
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Quote:
Originally Posted by JeffDonovan View Post
I've got brake drums that use bolt-style lugs instead plain old nuts. Never seen this type of set-up before. One the drums has stripped threads on one of the 5 holes. Any thoughts on how to fix it?

Any advice on how to ID the size for wheel bearings?
I have seen lugs bolts before. It is very common on outdoor equipment, garden tractors, agricultural machinery. But I have not seen them on a travel trailer until now.

Assuming you cannot buy a new drum, there is a thread repair kit called a Helicoil which is intended to fix stripped threads in just about anything. Aluminum cylinder heads where the spark plug threads stripped out etc. They also use these in very expensive metal parts that use fasteners being put on and off a lot. If they strip out a thread, the part is already prepared for a Helicoil and they just change the thread insert.

There are a few styles and materials.

See here
https://www.stanleyengineeredfasteni...ands/heli-coil

HeliCoil

You can buy kits to do this yourself OR find a local machine shop and they can do it for you.

Auto Parts stores have the kits and online Here is one at NAPA if you have them in your area. https://www.napaonline.com/en/p/BK_7703085

And here for a 1/2" - 20 thread kit. I'm assuming your lug bolts are 1/2"-20. That is a very common size for the wheel on our campers. https://www.amazon.com/Helicoil-5528.../dp/B000RFOORI

The bearings, they are most likely standard size cup and cone tapered roller bearings. If you take them to the a NAPA auto parts store they can match them up. They will have the seal too. There are small little numbers on the bearing cone. The cup or outer race, the numbers are on the inside where you cannot see them until you knock out the race. If you are changing bearings, you need to change both parts, the race and the bearing. They are matched sets. Do not use a new bearing in an old race it's life will be limited.

And if you can find the numbers on the bearings and the races, then it is not hard to get a cross reference to the bearing/race number and find parts that way.

If you strike out and no luck at the autoparts store, do you have access to a caliper or micrometer? Or a very good graduated scale? If you can get:
- The shaft OD or bearing bore ID
- The brake drum housing bore
- The width (length) of the bearing bore
- The width of the race when removed

I can lookup what bearing would fit that axle.

If you need more explanation on this, just ask. Glad to explain more if needed.

Hope this helps.

John
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Old 09-04-2018, 10:22 PM   #3
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A thought,

I'm making an assumption you may have a 10" brake drum. Is the brake diameter 10".

It might be cheaper to buy an entire new drum. See here. Before doing this, we have to verify several things to make sure this drum will interchange with yours. Dexter has very good customer service and a call to their service dept will get you fixed up if it will convert or not.

This link is to E trailer who sells a lot of Dexter Parts

https://www.etrailer.com/Trailer-Hub.../84546UC3.html

NOTE: I edited the link to the non EZ lube drum kit
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Old 09-05-2018, 09:32 AM   #4
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But I have not seen them on a travel trailer until now.
Lug bolts were very common on travel trailers throughout the '70s and early '80s. They started out being used on the Dexstar trailer wheels in the early/mid '70s (see pic below) and then were incorporated into normal steel wheels/electric brakes shortly after. My '79 has them.

Back when I was selling RV parts about 10 years ago, we stocked and sold quite a few of these lug bolts. Luckily they seem pretty standard among travel trailers, we only had the one size.

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Old 09-05-2018, 10:10 AM   #5
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Hi John,

Lots of good info in your post. Thank you.
I’m going to take some measurements tonight.

SunLineFan......That’s a crazy looking rim!
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Old 09-05-2018, 03:23 PM   #6
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SunLineFan......Thatís a crazy looking rim!
It is, but you've probably seen one before! They don't look as weird on the trailer. A lot of them had some plastic cross hub covers that covered over that open area too. This one does not, but here's what one looks like mounted:



I believe Sunline trailers had them through 1975.
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2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9461.2 (as of 10/01/16)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR
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Old 09-05-2018, 09:45 PM   #7
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Quote:
Originally Posted by Sunline Fan View Post
Lug bolts were very common on travel trailers throughout the '70s and early '80s.
Well.... learn something new every day here on Sunline Owners Club!

Thanks

John
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Old 09-05-2018, 10:01 PM   #8
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Now that I'm on my home computer...the 1975 Sunline Orbiter featuring Dexstar wheels!





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File Type: jpg 1975 Sunline Orbiter.jpg (60.5 KB, 34 views)
File Type: png 1975 Sunline Orbiter 22 RB.png (297.2 KB, 35 views)
File Type: jpg 1975 Sunline Orbiter Fifth Wheel.jpg (89.0 KB, 34 views)
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2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9461.2 (as of 10/01/16)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR
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Old 09-08-2018, 07:33 AM   #9
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There is a old camper sitting in my friends yard it's not a sunline and it has the same type wheels they were common on utility trailers years ago also. Large trailer stuff had bolted wheels too I have the remains of a trailer of some sort it once had 2 axles and it had open type wheels not a star but open face with bolts. It leaves little rust deposits where ever it goes on the farm but it's a great firewood hauler!
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