Replacing Brakes
The only regular maintenance to perform on the brakes is to keep the rotor clean. This is a simple process and can be performed by spraying both sides of the rotor with automotive brake parts cleaner. The brake rotor must be free and clean of any dust, dirt, oil or moisture.
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 the 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 1Ú8" (approx. 3mm), replace both.
To replace the brake pads:
1.Disconnect the sander from the power source and remove the 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 33.
Figure 33. Removing caliper to replace
brake pads.
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.
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 with a new one. Clean the rotor with automotive brake cleaner to remove any oil or dirt. Handle with a dry rag and install exactly the reverse of removal.
6.Install new brake pads, mount the caliper and reconnect the air line.
G9983 15" |