Cessna 188 Series Service Manual page 105

MODEL 188 & T188 SERIES SERVICE MANUAL
5-10.
REMOVAL AND INSTALLATION OF MAIN
a.
Deflate tire and break loose tire beads.
WHEEL AND AXLE.
(See figure 5-1.)
b.
Remove thru-bolts and separate wheel halves,
a. Disconnect brake hose at wheel cylinder and
removing tire, tube, and brake disc, and the center
drain hydraulic fluid.
Protect fittings from dirt.
spacer on the optional wheel.
b.
Remove wheel in accordance with paragraph
c.
Remove grease seals and bearing cones.
5-11.
NOTE
NOTE
The bearing cups are a press fit in the wheel
Note the number and position of any wheel
halves and should not be removed unless re-
alignment shims next to strut. Mark these
placement is necessary.
To remove the bear-
shims or tape them together so they may be
ing cups, heat the wheel half in boiling water
reinstalled in exactly the same position to
for 15 minutes.
Using an arbor press, if
ensure that wheel alignment is not disturbed.
available, press out the bearing cup and press
in the new one while the wheel is still hot.
c.
Remove bolts securing axle and brake torque
plate to strut and remove axle and plate.
5-13.
CLEANING AND INSPECTION OF MAIN
d.
Reverse the preceding steps to install the wheel WHEEL.
and axle, making sure that wheel alignment shims
a. Clean all metal parts and grease seal felts in
are installed correctly.
Refer to Figure 5-1 for
solvent and dry thoroughly.
torque requirements when 8. 50x10 wheel is installed.
b.
Inspect wheel halves for cracks. Cracked wheel
Refer to paragraph 5-15 for wheel installation.
halves must be replaced.
Sand out nicks, gouges,
e.
Remove plugs or caps from brake hose and con-
and corroded areas.
Where the protective coating
nect. Bleed the brake system.
has been removed, the area should be cleaned,
primed, and repainted.
5-11. REMOVAL OF MAIN WHEEL.
c.
Inspect brakes in accordance with procedures
outlined in paragraph 5-45.
NOTE
d.
Bearing cups and cones must be replaced if
damaged or discolored. After cleaning, repack
It is not necessary to remove the wheel to
bearing cones before installation.
reline brakes or remove brake parts (other
than the brake disc or torque plate).
5-14.
REASSEMBLY OF MAIN WHEEL.
a. Insert thru-bolts through brake disc and position
a.
Jack wheel, using universal jack point.
in inner wheel half, using bolts to guide the disc.
b.
Remove outer dust cover or hub cap.
Assure that disc is bottomed in wheel half.
c.
Remove cotter pin and axle nut.
d.
Remove bolts and washers securing back plate.
NOTE
e. Pull wheel from axle.
On optional wheel, re-
move bearing cone as wheel is removed.
Assemble tire and wheel halves in position
marked during disassembly. If a new tire
5-12.
DISASSEMBLY OF MAIN WHEEL.
is being installed, place tube in tire with
balance mark on tube at red dot on tire.
NOTE
Refer to paragraph 5-17 for wheel balanc-
ing.
If wheels are not out of balance, mark wheel
halves and tire before disassembly.
b.
Position tire and tube in outboard wheel half with
inflation valve extending through hole. On optional
WARNING
Injury can result from attempting to separate
wheel halves with the tire inflated. Avoid
damaging wheel flanges when breaking tire
beads loose.
SHOP NOTES:
5-23