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If misalignment of the wheels is suspected, carry out a tracking check, as follows:
Draw a straight line on the studio floor at least 4 m (13 feet) long.
Ensure that the pedestal is carrying a payload of approximately 90 kg (200 lb)
Set the pedestal to crab and carefully align the wheels under the crab knob and one of the
front wheels with the line on the studio floor.
Push the pedestal 3.6 m (12 feet) along the line. The pedestal should not deviate more than
50 mm (2 in.) from the line.
Push the pedestal back to the starting point. The pedestal should not deviate more than
50 mm (2 in.) from the line.
Reposition the pedestal to align the wheels under the crab knob and the other front wheels
with the line on the studio floor and repeat the above check.
If the deviation exceeds the above limits, re-align the wheels as follows:
Remove any payload from the pedestal. Remove all trim weights from the weight tray and
stowages.
Lower the column and lock in the fully depressed position.
With the aid of a second person, invert the pedestal and stand it on the weight tray. Use a
suitable material under the pedestal to prevent damage.
Adjust all three cable guards
to their highest position.
Select STEER and turn the wheels until the two wheels furthest from the clutch wheel
lock in the straight-ahead position.
At each axle mounting, slacken the lock screws
.
Push a substantial straight edge
(at least 1 m long) against the tyres of the two pairs
of wheels until the wheels are aligned. Tighten the lock screws
.
Select CRAB and turn the wheels until all wheels lock together.
Turn the wheels until the clutch wheel is approximately aligned with either of the other
wheels.
Slacken the lock screw on the clutch wheel.
Push the straight edge against the tyres of the two pairs of wheels until they are aligned.
Tighten the lock screw on the clutch wheel.
Check the alignment of the clutch wheel against the other wheel, then recheck the align-
ment of the two wheels furthest from the clutch wheel. Repeat the adjustment until align-
ment is satisfactory.
Ensure all lock screws
are fully tightened.
With the aid of a second person, turn the pedestal upright.
Carry out a tracking check as detailed above.
If problems are still experienced with the steering, it is probably due to backlash in the steering
ring, or slackness in the steering belt or chains. Please refer to the appropriate section in the Main-
tenance Manual.
