Servicing Brakes
Eventually the brake pads will wear out. Checking and replacing these is a simple project that can be done in the shop, with the exception of having the rotor resurfaced.
To check the brake pads:
1.Disconnect the sander from the power source and remove air pressure com- pletely!
2.Remove the four screws that secure the motor cover on the
3.The brake pads consist of a metal plate with a composite pad. With a fine ruler, measure the thickness of the composite pad only. If one of the pads is below 1⁄8" (approx. 3mm), replace both.
To perform a pad replacement:
1.Disconnect the sander from the power source and remove air pressure com- pletely!
2.Remove the nuts from the two mounting bolts. There are two snap rings on the mounting pins behind the bracket. Remove these.
3.Pull the mounting pins out of the caliper bracket and remove the air line from the caliper. The caliper should now be able to be removed as in Figure 15.
4.The brake pads are secured to the caliper with cap screws. One of these screws is eas- ily accessible; the other can only be reached by disassembling the brake caliper. Do this and remove the cap screws to remove the brake pads.
Caliper
Figure 15. Disc brake components.
5.Remove the brake rotor and have it profes- sionally resurfaced. For this, find a local machinist or auto supply store that regularly resurfaces brake rotors for automobiles. If visible cracks are present in the brake rotor, replace it with a new one. Remove oil and dirt from the rotor with automotive brake cleaner. Once clean, only handle the rotor with a dry rag and install exactly the reverse of removal.
6.Install new brake pads, mount the caliper and reconnect the air line.
G0527 18" Wide Belt Sander |