Can the Replacement Atwood Master Cylinder 85736 Still Be Obtained

Question

Question:

I was given a boat and trailer and the trailer is a dual axel and the drum brakes were locked up. I took the 82543 part off and the master brake cylinder off. It was filled with soot and It got hard like concrete. I cant move the trailer and I need to find a solution quick. The push rod looks like it broke I found a replacement kit but I cant get that soot out of the reservoir. Im trying to not spend alot of money but can you please Help me Im new to this but am a fast learner and would like to resolve this issue so I can check on the boat and get it ready to take out on the water..

asked by: Paul D

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Expert Reply:

I do have an option for you but the coupler on your trailer is very old and we simply don't carry parts for them anymore as they were discontinued by the manufacturer. Therefore, the only option we can offer is a new coupler, the Demco Hydraulic Brake Actuator part # DM72VR would be our best cost effective option.

If other parts aside from the master cylinder are bad then you'll spend more time and money then you would be just replacing the coupler from the start.

expert reply by: Conner L

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Answer 1

Your best route is to replace your entire surge brake assembly as Atwood no longer produces any parts for their brake actuators. The Titan Zinc-Plated Brake Actuator #T47457207K is going to be your best replacement available. It is specific to disc…

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Answer 2

Unfortunately the Atwood 85736 cannot be replaced so you'd actually need an entirely new actuator. The closest replacement we have is the Demco Hydraulic Brake Actuator #DM72VR. This actuator has a gross towing weight capacity of 7,000-lbs, a…

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Answer 3

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 4

The best recommendation I can give you since we don't carry the Gabriel actuators would be to check out the link I attached that will take you to a page that has all of the actuator shocks we carry. On the product pages for each there will be…

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Answer 5

Hi Chad! That 4 bolt mounting plate with 2-7/8" measurement is pretty much the standard for 3,500 pound axle brakes (which the Dexter 8-247 drum also fits), so that makes it nice and easy. We have a lot of option, but I recommend the two I have…

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Answer 6

Thank you for the photo of your trailer hub/drum assembly which shows its diameter to be 10-inches. More than likely the drum depth dimension is 2-1/4-inches since 10 x 2-1/4-inch hubs are quite popular. Please refer to the photo I linked for you.…

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Answer 7

I do have a solution for you, but the Demco Hydraulic Brake Actuator #DM8101802 is made to fit the more common 3" wide trailer tongues, so the mounting bracket won't work with your 4" trailer tongue. Instead, I recommend the Demco…

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Answer 8

I would be happy to help you. The Brake Actuator with Manual Lockout - Bolt On - Drum - 2" Ball - 7,500 lbs item #T4500600 you referenced is recommend to be mounted on a 3" wide tongue. It is an industry standard actuator and has an inside…

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Answer 9

Kenny, those bolts for the B&W Companion 5th Wheel Trailer Hitch #BWRVK3500-5W should be torqued to 40 ft. lbs. Also, the pivot arms would need to be torqued to 80 ft. lbs, the draw down bolt should be tighten to 60 ft.lbs and the arms should be…

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Answer 10

Hi Hans; the Manual Lock Out Kit for Demco DA75 Trailer Brake Actuators #DM93CV is not compatible with the Demco DA70 like #DM72VR. The design is different and won't allow for the installation of the lockout. If you want to add a lockout to your…

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Answer 11

Okay, so there's a number of things you'll need to convert your Keystone travel trailer from drum to disc brakes, and I'll detail how to determine that. You'll need a hub and rotor disc brake kit, though we don't have a way of…

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Answer 12

If the inner diameter is 1.719 inches and the outer diameter is 2.565 the #RG06-050 would be the closest matching grease seal we offer. You will need a digital or dial caliper for this measurement. The grease seal number you referenced doesn't…

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Can the Replacement Atwood Master Cylinder 85736 Still Be Obtained

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