Inspection Of Main Wheel Assembly; Assembly And Installation Of Main Wheel; Removal And Disassembly Of Nose Wheel Assembly - Piper Dakota Maintenance Manual

INSPECTION OF MAIN WHEEL ASSEMBLY

1. Visually check all parts for cracks, distortion, defects, and excess wear.
2. Check tie bolts for looseness or failure.
3. Check internal diameter of felt grease seals. Replace felt grease seal if surface is hard or gritty.
4. Check tire for cuts, internal bruises, and deterioration.
5. Check bearing cones and cups for wear and pitting. Relubricate bearing cones and cups.
6. Replace any wheel casting having visible cracks.
ASSEMBLY AND INSTALLATION OF MAIN WHEEL (figure 32-7)
1. Ensure that bearing cup for each wheel is properly installed. Install tire with tube on outer wheel half
and then join two wheel halves. Position brake disc in inner wheel half and install through bolts with
nuts on valve stem side. Tighten wheel nuts to a torque of 150 inch-pounds and inflate tire. (Refer to
chart 601.)
2. Lubricate bearing cones and install cones, grease seals, and seal retainer rings. Secure with snap rings.
3. Slide wheel on axle and secure with retainer nut. Tighten nut to allow no side play, yet allow wheel to
rotate freely. Safety nut with a flat head pin, washer, and cotter pin. Reinstall dust cover.
4. Position brake lining back plates between wheel and brake disc and brake cylinder on torque plate.
Insert spacer blocks between back plates and cylinder. Install four bolts to secure the assembly. If
brake line was disconnected, reconnect line and bleed brakes. (Refer to Bleeding Brakes.)
NOSE WHEEL ASSEMBLY
REMOVAL AND DISASSEMBLY OF NOSE WHEEL ASSEMBLY (figure 32-8)
1. Jack airplane enough to raise nose wheel clear of ground. (Refer to chapter 7.)
2. If wheel fairing is installed, remove four bolts, two on each side, and small plate on top held by metal
screws. Slide fairing up gear to access wheel.
3. Remove wheel as follows:
a. Remove nut and washer from one end of axle rod and slide out rod and axle plugs.
b. Lightly tap axle tube out from center of wheel assembly using an object of near equal diameter.
Do not damage axle tube end in any way. This can make removal
and installation extremely difficult.
c. Remove spacer tubes and wheel assembly.
d. Slide down wheel fairing and remove by turning it sideways.
4. Separate wheel halves as follows:
a. Deflate tire.
b. With tire sufficiently deflated, remove wheel through bolts.
c. Pull wheel halves from tire by removing wheel half opposite valve stem first.
5. Remove wheel bearing assemblies from each wheel half as follows:
a. Remove retainer rings or snap ring holding grease seal and seal retainers in.
b. Remove bearing cones.
c. Remove bearing cup by tapping out evenly from inside.
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
—NOTE—
2C5
32 - 42 - 00
Page - 32-17
Reissued: August 1, 1986