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Proper adjustment is necessary for any mirror system to perform as designed.
The following adjustment sequence should be used to allow the driver maximum
viewing area with the mirror system.
1. Adjust the driver's seat to the desired position.
2. Adjust the right-side, flat, driving mirror so that the tops of the side windows
are visible in the upper edge of the mirror, and the right side of the bus body
is visible in the inside edge of the mirror.
3. Adjust the right-side, convex, driving mirror so that the view in the top of the
mirror overlaps the view provided by the right-side flat driving mirror, and
the right side of the bus body is visible in the inside edge of the right-side
convex mirror.
4. Adjust the left-side, flat, driving mir-
ror and the left-side, convex, driving
mirrors using the same procedures de-
scribed for the right-side mirrors. Refer
to Steps 2 and 3 above.
5. Adjust the elliptical cross view mirrors
by positioning each mirror head so that
the center of its field of view is aimed at
the eyes of the driver.
6. Make a final adjustment to the mirror
system so that the seated driver can
view the areas required by Federal
Motor Vehicle Safety Standard 111 —
including the entire top surface of cyl-
inders M and N when located as illus-
trated, and rearward a minimum of 200
feet (measured from the mirror surface)
— using the outside rearview driving
mirrors. The elliptical cross view mirrors
should be adjusted to provide the seat-
ed driver a view of the entire surface of
any cylinder A thru P (when located as
illustrated) not visible by direct view of
the driver. The view provided by the el-
liptical cross view mirrors must overlap
the view provided by the outside rear-
view driving mirror system.
All mirrors should be cleaned once a week
(or more if needed), preferably with an am-
monia solution. Keep the mounting fasten-
ers tight so that mirrors will not vibrate.
Check weekly and tighten, if necessary.
ORIENTATION
12 ft. from
A
B
front bumper
6 ft. from front
D
E
bumper
FRONT
G
H
Face of front bumper
FRONT
Centerline of front axle
J
Centerline of rear axle
L
M
C
F
I
K
Test cylinders A-O are
1 ft. tall × 1 ft. diameter.
Cylinder P is
3 ft. tall × 1 ft. diameter.
N
O
P
33
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