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Workman MD/MDX Page 7 -- 7 Chassis
Adjust Front Wheel Camber
1. Adjust front tire pressures to 12 PSI (82 kPa) before
checking front wheel camber.
2. Either add weight to the driver’s seat equal to the av-
erage operator who will run the machine or have an op-
erator on the v ehicle operator’s seat. The weight or
operator must remain on the seat for the duration of this
front wheel camber procedure.
3. On a level surface, roll the vehicle straight back from
6 to 10 feet (2 to 3 meters) and then straight forward to
the original starting position. This will allow the suspen-
sion to settle into the normal operating position.
4. Make sure that the front wheels are facing straight
ahead.
5. Measure the front wheel camber on both front
wheels:
A. Place a 90
o
square on the ground with the vertical
edge touching the face of the tire (Fig. 4).
B. From the same part of the rim, measure the dis-
tance from the top and bottom of the rim to the
square. Record the two (2) measurements.
C. The measurement at the bottom of the rim should
be 0.090” (2.3 mm) larger than the top measure-
ment. This measurement allows for a camber of
0+1/2 degree.
D. Repeat measurement procedure for other front
wheel.
6. If camber measurement for either wheel is incorrect,
adjust shock absorber spring to correct camber for that
wheel:
A. Chock wheels to prevent the vehicle from mov-
ing. Use a jack to raise vehicle and allow s hock ab-
sorber to extend. This will allow easier shock spring
adjustment.
B. Use spanner wrench (TOR6010: see Special
Tools in this chapter) to rotate shock absorber collar
which changes thelength of the shock spring (Fig.5).
If the bottom c amber measurement was too short,
rotate the collar to reduce the length of the shock
spring. If the bottom camber measurement was too
long, rotate the collar to increase the length of the
shock spring.
C. Lower vehicle to level surface.
7. Repeat steps 2 through 6 until front wheel camber on
both wheels is correct.
8. After camber adjustment, check front wheel toe--in
(see Adjust Front Wheel Toe--in in this section).
1. Front wheel
2. 90
o
square
3. Top measurement
4. Bottom measurement
Figure 4
3
4
2
1
1. Shock absorber spring
2. Collar
3. Spring length
Figure 5
2
1
3
Rev. A