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G0527 18" Wide Belt Sander
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 right-hand side of the
machine. Note—The brake caliper is located
underneath the rotor, which is attached to the
motor arbor.
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.
Figure 15. Disc brake components.
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.
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.
Caliper