Meritor 53-123568-002 or 53123568002 is an X30 balanced brake drum, 15.00 in. x 4.00 in., with a 4.76 in. brake surface width and 8.89 in. overall depth. It mounts outboard on disc wheels and has 10 bolt holes of .94 in. diameter on an 11.25 in. bolt circle, with an 8.78 in. pilot.
The drum is the rotating surface the brake shoes press against, and it is made to wear slowly. Fine hairline heat checks are normal, but a crack through the wall, hard dark spots or blue discoloration point to excess heat and mean the drum needs replacing. Oil or grease staining means a leak has to be traced as well. This is a genuine Meritor part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
X30 balanced brake drum
Brake size 15.00 in. x 4.00 in., brake surface width 4.76 in.
10 bolt holes, .94 in. diameter, on an 11.25 in. bolt circle
Pilot diameter 8.78 in., overall depth 8.89 in.
Outboard drum mounting, disc wheel type
Through-wall cracks, hard spots or blue discoloration mean the drum is done
