Brake Service - Piper AZTEC D PA-23-250 Owner's Handbook Manual

SECTION V
THE PIPER AZTEC "D"
In the event the oleo strut slowly loses pressure and exten-
sion, the most probable source
of
trouble is the air valve attach-
ment to the leg, or the core of the air valve. These parts sh.ould
be checked first to determine whether or not air leaks are oc-
curring.
If
hydraulic fluid is evident on the exposed chrome
plated oleo strut, the "0" rings on the piston tube bearing units
may need to be replaced.
BRAKE SERVICE
The brake system is filled with MIL-H-5606 (Petroleum
base, red) hydraulic brake fluid. This should be checked at
every 100 ·
hours inspection and replenished when necessary.
Do not use vegetable base brake fluids (blue) when refilling
the system. When it is necessary to add fluid, open the left nose
access panel, exposing the brake reservoir. Then add fluid to
the reservoir, bringing the fluid to the indicated level.
If
it is necessary to bleed the brake system to get air out of
the lines, fluid should be added under pressure at the bleeder
attachment on .the brake unit.
No adjustment of brake clearances is necessary on the
Aztec brakes.
If
after extended service, braking action requires
Brake Reservoir
68
too much movement of the toe
pedal, new brake linings can
easily be installed by re-
moving the four bolts which
a~tach
the brake units, then
replacing the brake linings
held in place by brass rivets.
Main wheels are quickly
removed by · first cutting the
safety wire and removing eight
bolts to drop the brake lining.
Remove the dust cover, hub
cap, cotter pin and axle nut.
The wheel will slip off the
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