-38-
Model G9983 (Mfg. Since 8/09)
figure 39. removing caliper to replace
brake pads.
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 sander FroM poWer!
2. turn the air pressure OFF and remove any
pressure in the system.
3. remove the four screws that secure the
motor cover on the right-hand side of the
machine. this will allow you to access the
brake components.
4. 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 replace the brake pads:
1. disConneCt sander FroM poWer!
2. turn the air pressure OFF and remove any
pressure in the system.
3. remove the nuts from the two mounting
bolts. there are two snap rings on the mount-
ing pins behind the bracket. remove these.
4. 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 39.
5. 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.
6. 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.
7. install new brake pads, mount the caliper and
reconnect the air line.
replacing brakes
Summary of Contents for G9983
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