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Old 09-25-2012, 01:47 PM   #1
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Question Demco KarkaddySS Questions

Although related to the Demco Karkaddy which I purchased used with my RV, my questions are of a general nature. The dolly has a hydraulic brake which is activated by a surge cylinder. (1) Does it damage the dolly to slowly back it up for short distances with a car mounted, i.e. at a gas pump, or campsite ? (2) Is there an acceptable method for making sure the brakes on the dolly are actually functioning? Thanks. Bob
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Old 09-25-2012, 01:50 PM   #2
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1. No, although you won't back it very far before it jackknifes on you.
2. I don't know of any way.
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Old 09-25-2012, 02:01 PM   #3
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Quote:
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1. No, although you won't back it very far before it jackknifes on you.
2. I don't know of any way.

+1 on this one.
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Old 09-25-2012, 03:41 PM   #4
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You should still have a emergency breakaway device. Activate it by pulling the cable to simulate a breakaway. Then try to move the dolly by hand or a few inches with the motorhome. The wheels should not turn. If they do then you know the brakes and or the emergency breakaway is inop. Demco must have a way to check that it works I would also check with them.
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Old 09-25-2012, 03:43 PM   #5
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I've backed up a little before but only 1-2 feet. I did make a block of wood that I can bungee to the dolly under the plunger to keep the hydraulic cylinder from compressing if I ever need to. But with that in mind you would have to disable the auto steer or as said above you would jack-knife in short order. I don't know of a good way of testing other than hitting the brakes firmly. I can feel the initial push then a tug as the breaks apply. It is not highly pronounced but I can feel it. Being able to apply and test the electric brake models is a plus we don't have. On the other hand I really like the simplicity. I've had both & prefer hydraulic.
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Old 10-04-2012, 12:09 AM   #6
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I have hydraulic brakes on my boat trailer, it came with a small duck foot shaped metal object on a wire. When there is a need to backup, one inserts this duck foot lever in the slot. Then start to back up and the plunger will not travel to apply the brakes!
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Old 10-04-2012, 12:16 AM   #7
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You should still have a emergency breakaway device. Activate it by pulling the cable to simulate a breakaway. Then try to move the dolly by hand or a few inches with the motorhome. The wheels should not turn. If they do then you know the brakes and or the emergency breakaway is inop. Demco must have a way to check that it works I would also check with them.
That would test the breakaway but not the actual functioning of the brakes under normal use. There is a big difference in fully locking the brakes and partial application under normal use.
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