TM 9-2320-266-34
(3) Remove the piston boot and discard it.
(4) Using a pointed wooden or plastic stick, remove
the piston seal from the caliper cylinder bore and discard it.
b. Cleaning and Inspection.
(1) Clean all rust from the surface of the caliper
housing.
(2) Clean all parts using denatured alcohol. Blow dry
with air.
(3) Blow out all the drilled passages.
(4) Inspect the cylinder bore, piston, seal, and boot
groove for damage. Replace, if necessary.
NOTE
If corrosion is present in the boot or seal
groove, remove it using a fiber brush.
(5) Use a wire brush to remove rust or corrosion from
the surface of the adapter.
Figure 22-9. Installing Piston Dust Boot.
(6) Inspect and clean the anti-rattle spring and the
caliper support spring and key. Replace, if damaged.
(5) Coat the piston with brake fluid.
c. Assembly.
(6) Spread the boot with your fingers and work the
(1) Clamp the caliper in a vise with protected jaws.
piston into the boot (figure 22-10). Push it down until it
bottoms.
(2) Lubricate the new piston seal with clean brake
fluid.
(3) Position the seal in the groove of the cylinder
bore (figure 22-8).
NOTE
Be sure the seal is not rolled or twisted.
Figure 22-10. Installing Piston.
22-3. Wheel Cylinders.
Figure 22-8. Installing Piston Seal.
(4) Coat the new piston boot with brake fluid. Use
your finger to install the boot in the caliper by working it
into the outer groove (figure 22-9).
Change 1
22-3
