Mounting Hole Spacing for Demco Hydraulic Brake Actuator

Question

Question:

I have a couple questions regarding the following actuator Demco Hydraulic Brake Actuator - Drum - Zinc - 2 Ball - 7,000 lbs Item # DM72VR 1. What is the mounting hole spacing? 2. If I have free braking drums do I need the solenoid actuator or can I buy the DM72VR? Thank you

asked by: Anthony

0

Expert Reply:

I went ahead and attached a diagram below with the bolt patter for the Demco Hydraulic Brake Actuator # DM72VR. Free backing brakes are exactly what you need to use this brake actuator. It does not have a reverse lockout so free backing is required to prevent the brakes from engaging in reverse.

expert reply by: Robin H

0

Bolt Pattern for Demco Hydraulic Brake Actuator DM72VR
(click to enlarge)

Answer 1

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 2

The Atwood 85778 actuator has been discontinued so I recommend the Dexter DX7.5L A-60 Brake Actuator - Bolt On - Drum - 2" Ball - Zinc - 7,500 lbs #DX33FR. If you need a higher capacity, then you will need to use a 2-5/16 inch hitch ball.…

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Answer 3

The replacement I recommend for an Atwood Surge Brake Actuator 85778 is the Demco Hydraulic Brake Actuator part #DM62VR. It has the same ball size, offers a bolt-on install, and has a greater capacity. The only difference is it has an electric…

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Answer 4

While we may have an option for you, we do not have the exact specs on your Allis grease seal part number 5013 29772. However, with the 1.6" ID and 2.5" OD measurements you provides, that is very close to our #58846. This particular grease…

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Answer 5

We have a really great kit that comes with everything you'd need to convert your 2021 Vanleigh Pinecrest 335RLP from tandem 6k drum brakes to electric over hydraulic disc brakes with the HydraStar Disc Brake Kit w/ Actuator for Triple Axle…

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Answer 6

The AL-KO trailer hub part number 8700 that you have is a 3,500 lb trailer hub/drum with a 5 on 4-1/2 inch bolt pattern. Based on that the #AKHD-545-35-EZ-K is the correct fit and would work great.

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Answer 7

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 8

I checked with Curt and they do show the Curt Trailer Hitch Receiver part #C13233 as a fit for a 2022 Volvo XC90 All Models which includes the Recharge.

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Answer 9

The two sizes you mentioned are pretty similar and fit many of the same 15 inch wheels. The 205/75-15 fits rim widths of 5 inch to 6-1/2 inch whereas the 225/75-15 fits widths that are 5 inch to 6 inch. The 205 is 27.1 inches tall and the 225 is 28.4…

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Answer 10

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 11

The old version of the #HBA-CAM used 4 wires, but the product was updated awhile back and now uses only two wires as shown in the photo on the product description page. The white wire from the HBA-CAM would tap into the white ground wire and the blue…

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Answer 12

The correct replacement for a Demco Master Cylinder 05680-C is the Replacement Master Cylinder part #5650. I spoke with Demco to confirm this for you.

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Mounting Hole Spacing for Demco Hydraulic Brake Actuator

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