Symtech SCA 1 - Manual (Page 6)

6
3. OPERATION PROCEDURES
3.1 PREPARATION, ALIGNMENT BAY(s)
Prior to any headlamp alignment using the SCA 1
ISOColor, the floor slope of the bay, or bays must be
determined, this is done by using the floor slope laser assembly and noting the position of the rear floor slope
wheel.
If the correct floor slope of the bay is not adjusted prior to any headlamp alignment, the technician will align
the headlamps in a higher, or lower position than what is correct. The SCA 1
ISOColor must be on the same
plain as the vehicle that is to be aligned, if the vehicle is positioned on a floor that has an upward slope
running from fore to aft of vehicle, then the SCA 1
ISOColor must be adjusted to have the same slope.
3.2 FLOOR SLOPE MEASUREMENT
Tool Required: Tape Measure or Ruler
Move the SCA 1
ISOColor to the service bay to be used for headlamp alignment and place the SCA 1
ISOColor at the front of the vehicle, off to one side. If multiple bays are to be used, procedure for
determining floor slope will need to be performed in each bay and recorded.
Lower the optical head to the bottom of the mast. Adjust optical head by rotating eccentric wheel at rear of
base until level vial registers level. Turn the laser on with the thumbscrew on the front of the laser assembly.
MEASURE MEASURE
At the center point of the front wheel of the vehicle measure the distance from the floor to the point where the
laser strikes the tape measure, RECORD.
Move to the center point of the rear wheel of vehicle and measure the point where the laser strikes the tape
measure, RECORD.
If the measurements at the front and rear wheels are not equal, the
bay has a slope.
Rotate the floor slope handle on rear wheel until equal
measurements are registered at the front and rear wheels.
NOTE: When rotating eccentric axle on SCA 1
ISOColor, both
measurements will change at front and rear vehicle wheels,
to achieve equal measurements, more than one eccentric
axle adjustment may be required.
FLOOR SLOPE REGISTRY
Bay# Slope Date Bay# Slope Date
_____ _____ ______ _____ _____ ______
_____ _____ ______ _____ _____ ______
_____ _____ ______ _____ _____ ______
_____ _____ ______ _____ _____ ______
Note the number on the floor slope gauge and record that number
along with the bay designate on floor slope sticker provided. Repeat
procedure for other bays and record.
NOTE: After measurements have been taken, remove laser and
store in a secure place
3.3 VEHICLE PREPARATION
•
Remove ice or mud from under the fenders.
•
Set the tire inflation to the values recommended by the manufacturer.
•
See that there is no load in the vehicle unusual to normal driving conditions.
•
Check vehicle springs for sag or broken leafs.
•
Check function of any automatic leveling systems and specific manufacturers instructions pertaining to
vehicle preparation for headlamp alignment.
•
Clean lenses (foggy and or yellowed lens can lessen the lamp intensity by up to 80%), check for bulb
burnout, broken mechanical aiming pads, moisture in lens and proper beam switching.
•
Stabilize suspension by rocking vehicle sideways.