Availability of 12x3 Inch Electric Trailer Brakes for a Parker Grasshopper Grain Trailer

Question

Question:

I have a parker grasshopper gooseneck grain trailer model number J5000 Serial number 7691098 unknown year but probably from the 75-85 year range. I have four bolt backing plates with shoes that measure 12inch x 3inch not 12 1/4 x 3 3/8inch like most of what you offer. They are all steel backing plates. The drums measure Exactly 12inch inside diameter. I am finding nothing to fit these axles. These use a 10-63 Seal if that helps. Old oil bath axles. Thank you for any information you can give on the proper brake assemblies available.

asked by: Brandon

0

Expert Reply:

As you have found, 12 x 3 inch brake assemblies are not available. It is possible though that your drum will accept a different size. If you can measure the width of the inside of the drum (where the pads make contact with the drum) you might find that 12x2 assembly like # 23-105-09 and # 23-106-09 will fit as long as the bolt pattern has the two lower bolt holes closer together than the top 2. And these assemblies are also designed for 6K axles.

But I think that what is going to end up happening is replacement of the axle due to a lack of compatible parts. We carry some axles, linked to the right, but not all possible options. You will likely have to go to a local tractor or trailer supply store to order and axle to meet the specifications you need. The benefit is that you will get all new parts and replacement parts will be readily available.

expert reply by: Michael H

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Answer 1

Based on the photo and information you provided, I can tell you have 12 x 2 inch Dexter brake assemblies for 5.2K axles, for which the Electric Trailer Brake Kit #AKEBRK-7-SA will be an excellent replacement. These are self-adjusting brakes so they…

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Answer 2

The center hole in the Dexter Electric Brake Assembly for 4 Bolt or 5 Bolt Flange, 12 inch, Left Hand, 6,000 lbs Axle #23-105-09 measures 3-1/4 inches in diameter. This is the same on the right hand brake assembly, part #23-106-09.

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Answer 3

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 4

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 5

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the '90s.…

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Answer 6

Traditionally, trailer manufacturers did not use electric brakes on boat trailers because the brake magnet wiring and trailer wiring did not always have the best insulation or water protection. These days, more and more manufacturers are using…

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Answer 7

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 8

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…

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Answer 9

The recommended lug nut torque for your 7,000lb axle depends on a few factors like wheel size, stud size etc. Check out the attached photo which shows the torque specs for a variety of applications. I see you were looking at the Dexter Nev-R-Adjust…

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Answer 10

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 11

There really isn't a particular maximum trailer weight that is used to determine when brakes need to be added to both axles of a tandem axle setup. While I do still recommend checking your local laws, I am also not aware of any general laws that…

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Answer 12

If your trailer has 7 wires running all the way back to the brakes, then yes, you can tap into the existing wiring. Each of your new brakes will have two wires for the brake magnet. One wire is for 12 volt power to the brake magnets and the other…

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