Inspection Of Main Wheel Assembly - Piper Navajo PA-31 Service Manual

10
1211.
6. CONE
BEARING
13. SNAP RING
7. RETAINER, GREASE
SEAL 14. HUB CAP
Figure 7-14.
Main Wheel Assembly
CAUTION
Do not pry between the wheel flange and tire bead with sharp
tools, as this could damage the wheel and tire.
f. Remove the bearing cone (6) by removing snap ring (9) securing the grease seal (8) and seal
retainers (7). The bearing cup (5) should be removed only for replacement. See Paragraph 7-46a for bearing
cup replacement instructions.
7-45. INSPECTION OF MAIN WHEEL ASSEMBLY. Inspect brake disc for cracks, excessive wear or
scoring, rust, corrosion and warpage. Remove rust and blend out nicks, using fine 400 grit sandpaper.
Replace disc if cracked or when disc is worn below minimum thickness. (Refer to Figures 7-16 or 7-16b.)
Ascertain that latest revision of Piper Service Letter No. 766 is complied with if applicable. In addition also
perform the same inspection given for nose wheel in Paragraph 7-42.
7-46. ASSEMBLY AND INSTALLATION OF MAIN WHEEL. (Refer to Figure 7-14.)
a. Ascertain that the bearing cup (5) in each wheel half (1 and 2) is fully seated in the wheel
housing. Lubricate the bearing cones (6) per lubrication chart in Section II. Install cone, grease seal retainer
(7), grease seal felt (8), and snap ring (9) into the proper wheel halves.
b. Inflate the tube sufficiently to round it out. Install tube into tire so that balance mark (yellow or
white band) is radially aligned with the tire balance mark (red dot).
Revised: 3/11/81
LANDING GEAR AND BRAKE SYSTEM
PIPER NAVAJO SERVICE MANUAL
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