Dexter Suspension Kit For Tandem Trailers With Equalizers Measuring 7-3/4, 6, or 5-3/4

Question

Question:

Working on a utility trailer suspension rebuild. Not sure which is best choice HD Suspension Kit for Tandem Axle for my application. K71-448-00 or K71-359-00? Not sure you can see my cart?

asked by: David N

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Expert Reply:

The Dexter suspension kits are high quality and include "wet bolts", bronze bushings instead of nylon and thick shackles. Properly maintained these would likely outlast typical factory kits three times over! To determine which kit is right for you simply measure the distance across the equalizer and use item # K71-449-00 for 7-3/4" long, item # K71-448-00 for 6" long, or item # K71-359-00 for 5-3/4" long. I have included a picture of the 7-3/4" equalizer showing where to measure.

If the holes in the spring hangers are wallowed out and you need new weld on hangers just email me the dimensions for a recommendation.

Once you get your wet bolts installed you will need to lubricate them. If you don't already have grease and a grease gun available, just add the Lubrimatic item # L30132 Grease and gun to your cart. The grease should be rated at least GC-LB which is pretty standard. If your gun is already loaded with high speed bearing grease that will be good also.

Upon learning that you want to replace your entire suspension set up, other than the 3” round mobile home axles, and with your information that the trailer has an 8000 pound capacity, this informs us that your tandem axles must be rated for at least 4000 pounds that that the four suspension leaf springs must be rated for at least 2000 pounds each. Additionally you said you would consider the Dexter item # 8327830-EB axle in the future as it matches the hub-face to hub-face measurement of 89” and a measurement of 74” between spring seats on your current axle.

To attach your springs to your frame and equalizer, you can use the Redline # H248 Hanger Kit measuring 3-1/4” tall with 9/16” hole diameter, that fit your 1-3/4” wide springs

To attach the 1-3/4” wide springs to the existing 3” round axle you will need the Redline item # APUBR-8 U-Bolt Kits.

You may also want to consider the article I have added a link to regarding axle placement.

expert reply by: Les D

0

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Answer 1

The Tandem-Axle Trailer Hanger Kit for Double Eye Springs #APT5 may have the correct equalizer but you will need to measure the current equalizer to find out. The length from the center of the left-most eye to the center of the right-most eye of…

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Answer 2

The Equa-Flex Cushioned Equalizers part #LC279687 is designed for tandem axle trailers with axles capacities ranging from 3,000 - 6,000 lbs. In order to determine if they will work for you, you will need to measure the equalizers you currently have…

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Answer 3

With the information you provided on your current equalizers having 7-3/4" center on center you would need Dexter Heavy-Duty Suspension Kit Item #K71-449-00 for tandem axles with 35" spacing. Item #K71-359-00 would not be compatible…

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Answer 4

Excellent question, and the difference between the two kits comes down to the dimensions of the equalizers. What you will want to do is match up the size of your equalizer with the size of the equalizer in these kits. - 6" Long, 4"…

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Answer 5

It sounds like the 6K might be referring to 6,000 pounds although I cannot be 100 percent sure on that. I could tell you for sure if you could tell me the inner and outer bearing numbers stamped in to the bearings. A 7K axle will use inner bearing…

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Answer 6

You will want to use a 1" diameter wet center equalizer bolt like #7-136-2-6-112 which inserts in the center hole and bolts to the hanger. I have attached a helpful article about the Slipper Spring Trailer Suspension System. The equalizer…

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Answer 7

Yes, you can use the seal part #RG06-070. I looked up the K71-386-00 seal that you mentioned and it has matching dimensions, an inner diameter of 2.25 inches and an outer diameter of 3.376 inches. This seal is commonly found on Dexter axles rated…

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Answer 8

The part number you are in need of is the part #RG06-070 which includes two 10-36 seals that match the dimensions you mentioned exactly.

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Answer 9

As your axles measure 35" apart from center to center but the frame hanger spread (FHS) measured 58-3/4", you did go the correct way. The axle spacing is definitely important, but the FHS is more so. Just be aware that you axle…

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Answer 10

Yes, we do have the wet equalizer bolts you can use with the Equa-Flex Cushioned Equalizers. You will need #126B2. I have included a picture showing a typical installation of the bolts being used to secure the springs to an equalizer. Installation of…

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Answer 11

It looks like the slipper springs for 7,000 pound axles are 2 inches wide which is good because that is a very common size for slipper springs so there will be options available. We have a 3-5/16 inch long wet bolt in a 9/16 inch, #126B2, but I do…

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Answer 12

I reached out to MORryde and the MORryde Rubber Equalizers for Tandem Axle Trailers - 35" Wheelbase - 8K #MR27ZR you were looking at is designed for 35" axle spacing and would not work with your trailer with 36" axle spacing. My…

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Dexter Suspension Kit For Tandem Trailers With Equalizers Measuring 7-3/4, 6, or 5-3/4

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