Cessna 1969-1976 172 Series Service Manual page 88

/
/ 7.l
PLACE CARPENTER'S SQUARE
AGAINST STRAIGHTEDGE AND
LET IT TOUCH WHEEL JUST
BELOW AXLE NUT-
\
'\
-
ALUMINUM PLATES, APPROXIMATE
18" SQUARE, PLACED UNDER WHEE
GREASE BETWEEN PLATES
NOTE
Rock wheels before
checking wheel alignment.
BLOCK STRAIGHTEDGE AGAINST
TIRES JUST BELOW AXLE HEIGHT
TOP VIEW OF TOE-IN CHECK
Measure toe-in
at
edges of wheel flange. Differ-
ence i n measurements is toe-in for one wheel.
(half of total toe-in.)
CARPENTER'S SQUARE
T
FORWARD
-
.
L
I
STRAIGHTEDGE
f
FRONT VIEW OF C A M B E R CHECK
Measure camber by reading protractor level
held vertically against outboard flanges of
wheel.
NEGATIVE CAMBER
7 r
POSITIVE CAMBER
INBOARD
I)
u l ) v
NOTE
Setting toe-in and camber within these tolerances while the cabin and fuel tanks are empty will give
approximately z e r o toe-in and z e r o camber a t g r o s s weight. Therefore,
if
normal operation is at
less than g r o s s weight and abnormal t i r e wear occurs, realign the wheels t o attain the ideal setting
for the load conditions. Refer to sheet 2 of this figure for shims availability and their usage. Al-
ways use the least number of shims possible t o obtain the desired result.
Figure 5-4. Main Wheel Alignment (Sheet 1 of 2)
5-12 Change 3