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Need help identifying a vintage two drum vibratory roller..Duomat?


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Old 06-12-2017, 09:58:45 PM
K-Tron K-Tron is offline
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Default Need help identifying a vintage two drum vibratory roller..Duomat?

I recently picked up this nice vintage two drum walk behind vibratory roller. It has a Hatz ES786 diesel engine for power. Although everything is in good working order, I am trying to figure out who manufactured this machine. I believe the manufacturers name was written on the water tank on the front of the machine. All that I can make out is a "UOH?" half way through the name. Obviously something German or European. I have been looking at two drum rollers on google images for hours and have not found an identical machine. Dynapac has a similar hand control on some of their models, but it looks like a Duomat in more ways than one. So far I have not found any identification plate or anything. Perhaps it was a decal that was painted over? I really do not think it is a Wacker, Bomag, Stone, Rammax, Amman, Mikasa, Weber or Ingersoll. Can anyone positively identify what I have?




Chris
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Old 06-13-2017, 12:38:23 AM
K-Tron K-Tron is offline
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Default Re: Need help identifying a vintage two drum vibratory roller..Duomat?

I finally found a machine "identical" to what I have. I believe it is a BK-Ammann Duomat DR77 made in West Germany. There are not many of these posted online, but the few I have found have two water tanks, slightly different controls, and an embossed belt drive cover. The muffler on this one is threaded on, whereas the others have the later style oval shaped automotive type muffler. The intake horn on this machine is probably not original. It likely had a Mann/Hatz rain cap or a pre-filter. Now to find an operators and service manual for this machine. I believe it should have a hydraulic relief valve somewhere so that the machine can be moved around with the engine off. Currently it does not move at all when the engine is not running. It is a huge dead weight that multiple guys cannot even budge. Simple things like that, what it is rated for, and how much hydraulic oil to use are the current questions I have. Otherwise this machine works really well.

Chris
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