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Acme tow dolly reference for brakes and bearings

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  • OwnPC: Yes
  • NewUsed: Used
  • PurchDate: August 2018
  • Model: 2551
  • ModelYear: 2010
  • Slide: Yes
  • IntColor: Gray
  • ExtColor: Gray
  • Location: Michigan
Acme tow dolly reference for brakes and bearings
« on: August 08, 2019, 09:08:39 am »
Ran across this link and thought I would share for all that have an acme tow dolly.  It gives info on brakes and bearings.  Of particular interest is how to check used ones for proper piston pressure.  So if you look at a used on you can tell if the system is in good condition.

“This dolly comes with the Vault wheel bearings/axle assemblies by UFP. The Vault grease system uses a small spring loaded piston to keep a little bit of pressure inside the axle (prevents water from getting in the bearings).  The status of the pressure system is easy to determine,  simply look at the hub. The black piston should be protruding 1/8 inch or so from the center of the hub.  If its flush with the hub,  then there’s no pressure.”


Ron S