Replacement Surge Brake Actuator For Demco DA603 Brake Actuator

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Question:

I need to purchase a Demco DA603 Brake Actuator I dont believe these are made anymore, so I was wondering would there be a newer model thank you

asked by: Steven

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Expert Reply:

Based on the information I was able to find on your Demco DA603 it appears the Dexter DX7.5L A-60 Brake Actuator for Drum # DX83FR or Disc # DX56FR brakes is going to be the best replacement. The disc brake actuator includes an electric lockout while the drum brake actuator would require a Lockout Key # DX94FR if you do not have free backing brakes. Both these have a 2" coupler and are rated for 7,500lbs to fit on a 3" by 5" trailer tongue.

expert reply by: Bud M

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Answer 1

I have attached an image from the operation manual for the Demco Hydraulic Brake Actuator #DM8669112 that details how to bleed the brakes. The process consists of first elevating the trailer tongue about 4 to 6 inches and then loosening or removing…

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Answer 2

Since you have a wheelbase/axle spacing of 38 inches the correct hanger kit for slipper springs would be the part #HAP-105-205-01. And then for a 7k trailer axle the u-bolt kit you'd want would be the part #APUBR-8. I attached the diagram to use…

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Answer 3

If the trailer wheels scrubbed (dragged and scrapped the ground instead of rolling) when jack knifed then it could have thrown something out of alignment or damaged something. First, inspect the suspension. Look for any elongated holes where…

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Answer 4

I would be happy to help you set up your 2022 Toyota Highlander to haul your new travel trailer. The wiring harness you currently have controls your trailer's lighting functions only. You do not need to rewire your Toyota you just need another…

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Answer 5

I did some checking and the hub/drum we offer that will work for you is the part #8-430-5UC3. This uses the same bearings as the 8-415 and will be an exact fit aside from the fact this is a non-ABS setup and the 8-415 came in an ABS setup and non-ABS…

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Answer 6

If you are needing the hub and drum assembly then you will want to go with the Dexter Trailer Hub and Drum Assembly #8-201-5UC3-EZ but if you are just looking for an idler hub then you will want part #8-213-5UC1 instead. These come with the correct…

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Answer 7

I've never heard of an actual third brake light connector on a camper shell to plug in on a truck and we don't carry any parts to do that. The light generally needs to be hardwired into the truck's brake light circuit. The issue with this…

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Answer 8

To tow your trailer that uses an RV style 7-way blade style connector with your semi that has a 7-pin connector, you need to construct an adapter that will also combine the brake signal into the right and left directional signal pins. This can be…

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Answer 9

Based on my research, the Trailer Hub and Drum Assembly - 8,000-lb E-Z Lube Axles #AKHD-865-8-EZ-K will be a replacement for the 90865 Rockwell hub and drum. Both of these hub and drum assemblies are 12-1/4" diameter, have an 8,000 lb capacity,…

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Answer 10

The manual lockout on your Atwood 85778 surge brake coupler is there so that you can back up the trailer without the brakes locking up on you. Yes you can safely tow your trailer with the broken manual lockout, you just have to make sure you…

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Answer 11

Replacement arms are available for the Roadmaster EZ5 Base Plate Kit #RM-521569-5 for your 2015 Honda Fit with the part #RM-ARMS. When the original base plate brackets and arms were manufactured, they were made as one part. To be sure that the new…

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Answer 12

If your vehicle has a factory brake controller plug, you can simply use the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers – Ford, Item #3034-P, which will connect to the vehicle plug and the brake controller. On the new E-450…

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Replacement Surge Brake Actuator For Demco DA603 Brake Actuator

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