PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 2
Nov 30/06
3E12
32-40-00
(e) The wheel halves (7 and 8) may be separated by first deflating the tire. With the tire
sufficiently deflated, remove the wheel through bolts (16). Pull the wheel halves from the
tire by removing the inner half (8) from the tire first, and then the other half.
(f) The wheel bearing assemblies may be removed from each wheel half by first removing
the snap rings (1 or 14) that secure the grease seal retainers (2 or 13), and then the
retainers, grease seals (4 or 11) and bearing cones (6 or 10). The bearing cups (5 or 9)
should not be removed (except for replacement). They may be removed by tapping out
evenly from the inside.
(2) Inspection
(a) Visually check all parts for cracks, distortion, defects and excess wear.
(b) Check tie bolts for looseness or failure.
(c) Check internal diameter of felt grease seals. Replace the felt grease seal if surface is hard
or gritty.
(d) Check tire for cuts, internal bruises and deterioration.
(e) Check bearing cones and cups for wear and pitting and relubricate.
(f) Measure brake disc at 2 or 3 points for wear.
(g) Replace any wheel casting having visible cracks.
(3) Assembly and Installation
(a) Ensure that the bearing cup (5 or 9) for each wheel half is properly installed. Install the tire
with tube on the outer wheel half (7) which contains the valve stem hole. Insert the valve
stem. Position the tire and tube so the index mark on the tire is aligned with the index
mark on the tube, to maintain proper wheel balance.
(b) Join the two wheel halves, aligning the wheel bolt holes. Install wheel bolts, washers and
nuts and tighten the bolts in a crisscross pattern to about 20 inch-pounds.
(c) Assure there is no pressure on the tires. Position the brake disc (15) in the inner wheel
half and install the through bolts with the nuts on the valve stem side. Torque each wheel
nut to about 45 inch-pounds before setting the final torque. Do not use power tools to
torque nuts. Torque wheel nuts to the value embossed on the wheel casting or nameplate;
if not legible, torque wheel nuts to 150 inch-pounds dry.
(d) Inflate the tire to the specified pressure given in Chart 1, 6-00-00.
(e) Lubricate the bearing cones (6 or 10) and install the cones, grease seals (4 or 11), seal
retainer rings (2 or 13) and felt rings (3 or 12). Secure with snap rings (1 or 14).
(f) Slide the wheel on the axle and secure with retainer nut. Tighten the nut to allow no side
play, yet allow the wheel to rotate freely. Safety the nut with a cotter pin and install a dust
cover.
(g) Position the brake lining back plates between the wheel and brake disc and the brake
cylinder on the torque plate. Install the four bolts to secure the assembly. If the brake line
was disconnected, reconnect the line and bleed the brakes.
(h) Position the wheel fairing and secure it with attaching screws, bolt and remove airplane
from jacks.
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