How to Determine the Correct Replacement Dust Caps for a 2011 Haulmark Cargo Trailer

Updated 09/23/2014 | Published 09/22/2014

Question:

will this dust cap fit my 2011 haulmark cargo trailer? with 6 bolt drums

asked by: Den

Expert Reply:

To determine the correct dust caps for your trailer you will need to measure the inner diameter of the hub/drum where the cap fits. The measurement has to be as accurate as possible so you will need to use digital or dial calipers. If that measurement is 2.446 inches then cap set # RG04-060 will fit.

I also can most likely figure out the correct one by going by the outer bearing number. You will not have to remove the hub/drum to get the number. You should be able to see it by removing the castle nut and any washers and wiping the grease away to see the number stamped into the side of the bearing.

expert reply by: Michael H