Parts Needed To Add Surge Brakes To A 2019 Stehl To Dolly
Published 12/21/2021
Question:
Kevin did a great job answering my initial question about adding brakes to my 2019 steil tow dolly. I would prefer surge brakes so any car or Motorhome could tow it without a controller. Thanks,
asked by: Dennis R
Helpful Expert Reply:
To add surge brakes to your 2019 Stehl Tow Dolly you'll need to know the bearing size and bolt pattern of the brake flange. Most likely you have a 4 bolt pattern brake flange which would mean you likely have a 3,500lb axle but we would still want to be sure. The easiest way to determine which bearings are used on your trailer axle is to take the idler hub off and check for the numbers stamped into the bearings. If the bearing numbers cannot be read, the next best solution is to find the bearings' inner diameter and outer diameter. You'll need to use some calipers like the # PTW80157 to measure the inner diameter and out diameter of both bearings. If your bearings are damaged you can also measure the spindles at the inner (C in diagram) and outer (D in diagram) bearing surfaces as well as the seal contact surfaces (B in diagram). I've attached an article that goes over typical bearing numbers with there dimensions listed in a chart but I can verify the bearing if you send in the dimensions as well. Once we know the bearings and bolt pattern of the brake flange we can find the respective drum brake assembly, hub and drum, surge brake actuator, and brake line kit.
If you can get me the bolt pattern and bearing numbers or sizes then I can find the correct components for you.
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