Cessna 1969-1976 172 Series Service Manual page 96

NOTE
Tighten thru-bolt nuts or capscrews evenly
to the torque value specified i n figure 5-2A.
Beginning with 17261441,
McCauley steel -flange
wheels replace McCauley
aluminum-flange wheels.
1. Retainer Ring
2. Grease Felt Retainer
4. Wheel Flange
5. Spacer
6. T i r e
7 . Tube
8. WheelHub
9. Wheel Flange
3. Bearing Cone
0
10. Thru-Bolt McCAULEY NOSE WHEEL
11. Grease F e l t
12. Bearing Cup
13. Capscrew
~~
Figure 5-8. Nose Wheel (McCauley)
d. Remove bearing retainer rings, g r e a s e seal
rings, felts and bearing cones.
NOTE
The bearing cups (races) are a press-fit in
the wheel halves and should not be removed
unless a new part is to be installed. To
remove the bearing cups, heat wheel half in
boiling water for 30 minutes, or in an oven
not to exceed 149°C (300°F). Using an
ar-
bor p r e s s , if available, p r e s s out the bear-
ing cup and p r e s s in the new cup while the
wheel is still hot.
5-30. NOSE WHEEL INSPECTION AND REPAIR
(Cleveland Wheel).
solvent and dry thoroughly.
halves shall be discarded and new p a r t s used. Sand
out nicks, gouges, and corroded areas, When pro-
tective coating has been removed, the area should be
cleaned thoroughly, primed with zinc chromate and
painted with aluminum lacquer.
damage and discoloration. After cleaning, pack
a.
Clean all metal p a r t s and grease seal felts in
b. Inspect wheel halves for cracks. Cracked wheel
c. Carefully inspect bearing cones and cups for
bearing cones with clean a i r c r a f t wheel bearing grease
(Section 2) before installing in wheel half.
I
5-31. NOSE WHEEL REASSEMBLY (Cleveland
Wheel).
t i r e and tube.
valve s t e m through hole in wheel half.
secure with nuts and washers. Take
care
to avoid
pinching tube between wheel halves. Tighten thru-
bolt nuts
to
the torque values stipulated i n figure 5-2A.
a. Insert tube in tire, aligning index m a r k s on
b.
Place t i r e and tube on wheel half and position
c. Insert thru-bolts, position other wheel half, and
Uneven or improper torque on the thru-
bolt nuts may cause bolt failure with re-
sultant wheel failure.
d. Clean and pack bearing cones with clean aircraft
e. Assemble bearing cones, seals, and r e t a i n e r s
f. Inflate t i r e to seat t i r e beads, then adjust
to
wheel bearing grease (Section 2).
I
into the wheel halves.
c o r r e c t p r e s s u r e (figure 1-1).
5-18 Change 3