The Model “CVA 3
functions under the same principle for accuracy and dependability of an aiming screen, with the added benefit of Color
Defined Lamp Pattern and a “Visual Assist” meter, without the excessive use of valuable shop space and the confusion
of vertical and horizontal lamp placement. System design and operation has been engineered with the technician in
mind. The “CVA 3
facilitates headlamp alignment, with profitability and customer satisfaction the end result.
The Model “CVA 3
the industry leader in headlamp alignment technology to the service and body repair industries, the architect of the
Model “ELA 10, ISOColor “, “LCA 2
systems and the “AIM 200” Headlamp Intensity meter.
We are confident that the “CVA 3
selecting a Symtech “Safety by Design” product to address your headlamp alignment needs.
1.2 SYSTEM COMPONENTS
OPTICAL HEAD
Small Parts Package
2 Large Nylon Washers
2 5/16” Nylon Washers
2 ¼” x 1/2” Nylon Spacers
2 ¼” x ¼” Nylon Spacers
2 5/16” Self-Locking Nuts
4 ¼” x 20 Machine Screws
1 ½” Self Locking Nut
1 ½” Flat Washer
2 ¼” Black, Flat Washer
2 ¼”x1.5” Button head Cap
DO NOT PLACE OR POSITION “CVA 3EZ” SO THAT DIRECT SUNLIGHT ENTERS
FRONT LENS. DOING SO WILL CAUSE DAMAGE TO ISOColor SCREEN AND
VOID WARRANTY. Front lens acts like an enlarged magnifying glass which will
concentrate direct sunlight into a destructive high intensity beam on the aim screen.
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” ISOColor Visual Headlamp Alignment System is an economical optical alignment tool that
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” ISOColor features Color Defined, Lamp Pattern Definition and a “Visual Assist” meter that
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” is designed, manufactured and serviced by Symtech Corporation, Lees Summit, Missouri,
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” Visual, ”HBA 5” and “PLA 12” Electronic Headlamp Alignment
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” ISOColor will provide you with years of exceptional service. Thank you for
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FLOOR SLOPE
VEHICLE ALIGNMENT
LASER
COUNTERWEIGHT
SPRING COVER
LASER
BASE &
WHEELS
FLOOR SLOPE
GLIDE PLATE
MAST
ROTATIONAL
OPTIONAL
DUST COVER
“NOT INCLUDED”
LA SE R R AD IA TI ON
AV OI D D IR EC T EY E E XP OS UR E
W AV EL EN G TH 40 0-7 00n m
CL AS S I IIA LA SE R PR OD UC T
4
Page 5
1.5 VISUAL ASSIST METER & SWITCH
“HIGH”
“LOW”
SELECTOR
The “Visual Assist” meter is an aide for positioning the headlamp
pattern to its correctly designed position. While visually adjusting
the headlamp into position, the “Visual Assist” meter will raise in
numeric reading if adjustment is directed in the correct direction.
Adversely, the meter reading will decrease if headlamp is adjusted in
the incorrect direction. When the highest achievable reading is
attained both vertically and horizontally, the headlamp will be
positioned correctly.
The SELECTOR switch moves the “Visual Assist” meter function
between High and Low Beam patterns. Make sure that the switch is
in the correct location for the beam pattern to be aligned.
1.6 ISOColor LAMP PATTERN DEFINITION
ISOColortechnology, unique to SymtechProducts, colorizes the
lamp pattern by designating a hue to the intensities of the headlamp.
The headlamp pattern will appear on the screen with the highest
intense portion of pattern being the most inner circle of color, with
varying colors of intensity radiating outward.
2. ASSEMBLY
VISUAL ASSIST
BEAM
BEAM
Inspect all components of the CVA 3
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system to assure that no damage has occurred during shipment, compare
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contents of package with that of the exploded view to make sure that no component has been inadvertently left out of
packaging. If a component is missing, contact our customer service department at 888-884-8182 for an immediate
replacement.
2.1 BASE / WHEEL ATTACHMENT
Place base of system on floor, or table with channel facing
downward.
Front of Base
Insert a 5/16” x 6” carriage bolt into each of the holes noted, making
sure that the square carriage bolt head seats securely into the square
hole placement.
Complete wheel assembly by placing in order a large nylon washer,
wheel, small nylon washer and self-locking 5/16” nut on carriage
bolt.
Tighten self-locking nut snug against wheel, but not so tight as to
hinder free wheel movement.
Insert floor slope eccentric and wheel into mounting block on base
(rear wheel). Tighten friction bolt until floor slope eccentric can be
moved, but not loose enough to move by itself.
2.2 MAST / GLIDE PLATE / ROTATIONAL MAST MOUNT
The Mast, Counterweight Spring Cover and Spring are packaged as
an assembly.
Remove attachment screw at top of mast spring cover.
Slide Glide Plate over end of mast, between mast and mast spring
cover, ensuring that handle is pointed away from spring cover. Slide
glide plate down over mast until the spring hook of the glide plate is
even with the bottom of the spring inside of the mast spring cover.
Place bottom of spring into spring hook, and reattach screw at top of
mast spring cover.
Place rotation bearing over mast stud and insert rotational mast stud
into base. Secure mast to base with 1/2” flat washer and ½” self-
Tighten
this Bolt
5
Page 6
Nylon Spacers
Allen head
Head
locking nut. Tighten nut securely then back-off ¼ turn, or until
mast rotates freely with minor resistance.
Move glide plate up and down the mast through its full motion, by
depressing handle.
2.3 OPTICAL ALIGNMENT HEAD
Remove optical alignment head from shipping carton.
Inspect for any damage that may have occurred during
shipment i.e. lens, case, etc..
Attach optical alignment head to the mast glide plate by
aligning mounting holes of glide plate with the holes in
the optical head. Insert ¼” x 20 x ¾” allen head machine
screws through glide plate, place a ¼” x ¼” nylon spacers
on each upper screws, place a ¼” x 1/2” nylon spacers on
each lower screws, attach optical head and tighten
securely.
Remove protective paper covering from viewing window
on top of optical head.
Move optical head through the full range of movement to
assure of smooth operation.
2.4 VEHICLE ALIGNMENT LINE LASER
Vehicle alignment laser assembly is
the accessories box.
NOTE: Install batteries and secure line laser
cover per instruction that accompany
Line laser assembly.
Mount line laser assembly so that unit
is located directly over the optical head.
Insert 2, ¼” x 20 x 1 1/2” screws (Small Parts
Package) into line laser calibration block and attach
all to top of mast.
DO NOT TIGHTEN. Tighten to a tension that
allows for sufficient movement during calibration.
After calibration has been performed tighten
securely.
NOTE: Line laser unit must be calibrated to the optical head
prior to alignment of headlamps.
2.5 SIGHTING UNIT CALIBRATION
Calibration of line laser unit must be performed prior to alignment
of headlamps.
Raise optical head of CVA 3
travel of mast.
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to the approximate center of
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Activate the line laser and turn the line laser unit until you can see
the projected laser line on the front edge of the optical head.
Projected laser line should line up with the front edge of the optical
head.
If line does not line up with the front edge of optical head, rotate
line laser assembly right or left until projected laser line is parallel
with front of optical head. Tighten screws.
It is important that periodical checking of calibration of the vehicle
alignment line laser be performed, to assure customer satisfaction.
enclosed in
Optical
IN
Calibration
¼” x 20 x ¾”
Optical
Head
OUT of
Calibration
¼” x ¼” White
Nylon Spacers
Glide
Plate
¼” x ½” Black
Optical
Head
6
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2.6 FLOOR SLOPE LASER
Knob
LR44
The floor slope laser assembly is factory calibrated, DO NOT turn the level adjustment set screw which is at the
back of laser assembly.
The laser is used for floor slope measurement only. Remove
laser after floor slope measurements have been recorded
Remove floor slope laser from packaging and insert front
fixture placement pin into hole on top and at rear of the
optical head, also there is an indentation provided for the
height adjustment screw to rest within.
Activate the laser by turning front knob clockwise
(CAUTION: Excessive turning may damage laser
ON/OFF mechanism) to assure of functionality, turn off
laser. No further adjustment is required.
NOTE: Should calibration of the laser become necessary in
the future, Refer to “LASER CALIBRATION”.
Calibration, Section 5.1, Pg. 9.
Laser Battery Replacement
Unscrew back of laser and replace batteries with three (3), LR 44
button batteries. Reverse process for assembly.
After battery replacement, CALIBRATION MAY BE REQUIRED.
3. OPERATION PROCEDURES
3.1 PREPARATION, ALIGNMENT BAY(s)
Prior to any headlamp alignment using the CVA 3
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 CVA 3
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 CVA 3
3.2 FLOOR SLOPE MEASUREMENT
Tool Required: Tape Measure or Ruler
Move the CVA 3
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.
MEASURE
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.
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.
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to the service bay to be used for headlamp alignment and place the CVA 3
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On / Off
LR44
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, the floor slope of the bay, or bays must be
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must be on the same
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must be adjusted to have the same slope.
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MEASURE
Fixture
Placement Pin
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Level Adjuster
Set Screw
at
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Page 8
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 CVA 3
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measurements will change at front and rear vehicle
wheels, to achieve equal measurements, more than one
eccentric axle change may be required.
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, check for bulb burnout, broken mechanical aiming pads, moisture in lens and
proper beam switching.
•Stabilize suspension by rocking vehicle sideways.
4. HEADLAMP ALIGNMENT
4.1 ALIGNMENT OF OPTICAL HEAD TO VEHICLE
Place the CVA 3
Once the CVA 3
should be approximately 12 inches (+/- 6 inches) from the face of
the headlamp.
Set the floor slope of the eccentric wheel for the bay in which the
vehicle has been parked.
Rotate the vehicle alignment line laser so that the projected laser
line can be seen on the front of the vehicle. Locate two (2) common
points on or under the hood to align the projected laser line.
NOTE: Points can be hood stops, radiator supports, points of
While observing laser line, align the projected laser line on the two
common points by rotating the optical head.
The CVA 3
alignment process for each lamp.
4.2 CENTERING on the HEADLAMP
Turn headlamps on. Move optical head up, or down to the center of the
headlamp. Position of center of the headlamp is approximate; a ± 2”
allowance is acceptable.
TRICK: A method to determining if position is greater than 2” is by observing
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in front of the first headlamp to be aligned.
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is in place, the lens of the optical head
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fender, etc.
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is now aligned with the vehicle. Repeat the
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the “Visual Assist” meter for highest reading while moving CVA
3
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left/right and up/down in front of the headlamp to be aligned.
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8
, both
Common Points
LINE LASER
Page 9
4.3 SELECTING HEADLAMP PATTERN
VOR
H
V
“HIGH”
“LOW”
SELECTO
R
Headlamp Alignment Procedure
H
High Beam
V
Not all headlamps are created alike and different vehicles
may have different design patterns. To be certain of the
lamp pattern, a designate is located on the lamp at the
bottom of the lens. Patterns of lamps that may be aligned
with the CVA 3
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are;
•SAE HIGH BEAM: All high beam lamps. Highest
intensity point is centered on the Horizontal /
Vertical axis.
•SAE LOW BEAM: All low beam lamps
manufactured prior to 1999. After 1999, some
vehicles could have headlamp patterns that are
“VOR” or “VOL”. The high intensity area is located
in the lower right hand quadrant.
•FOG LAMPS: All fog lamps the top of the high
intensity area is located 4” down and centered on the
Vertical axis.
NOTE: DO NOT use “Visual Assist” Meter
for alignment assistance for Fog
Lamps
•SAE LOW BEAM “
VOR
” (Visual Optical Right):
Low beam lamps manufactured after 1999, some
vehicles. The high intensity area is located in the
lower right hand quadrant and the beam pattern is
aligned by placing the right upper portion of the
beam pattern on the Horizontal axis.
NOTE: “Visual Assist” meter can be used when
aligning this lamp type if the lamp is
switched to HIGH beam and aligned as
High beam procedure.
•SAE LOW BEAM “
VOL
” (Visual Optical Left):
Low beam lamps manufactured after 1999, some
vehicles. The high intensity area is located in the
lower right hand quadrant and the beam pattern is
aligned by placing the left upper portion of the beam
pattern on the .4 Degree (2.096”) Down Horizontal
axis.
NOTE: “Visual Assist” meter can be used when
aligning this lamp type if the lamp is
switched to HIGH beam and aligned as
High beam procedure.
4.4 ALIGNMENT OF HEADLAMP PROCEDURE
•Locate CVA 3
front of the lamp to be aligned.
•Position CVA 3
aligned.
•Align CVA 3
under or above the hood with the projected laser line.
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approximately 12 inches from in
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in front of first lamp to be
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to vehicle by aligning two points
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•Select headlamp pattern and press “Visual Assist”
Switch to lamp type, HIGH BEAM or LOW BEAM.
VISUAL ASSIST
BEAM
BEAM
9
H
US Low Beam
H
V
US Low Beam
.4 Degree Down
(2.096 Inches)
1.
Position CVA 3EZ in
Front of first lamp to be
Aligned.
2. Adjust Floor Slope to
Recorded Bay Setting.
3. Square CVA 3 to
Vehicle by Aligning Two
Common Points with
Projected Laser Line.
4. Press “Visual Assist”
Switch to Lamp Beam
Type.
H
Aim Area
Aim Area
V
V
Fog Lamp
US Low Beam
VOL
5.
Adjust by Centering
the Inner Most
Colored Ring of Lamp
Pattern over circle
designated by selected
Beam Type Arrow and
the “Visual Assist”
Meter to Highest
Reading.
6. Move CVA 3 to Next
Lamp and Repeat
Steps 3 Through 5.
Page 10
•While viewing aim screen and “Visual Assist” meter,
adjust headlamp to position that appears as graphic
illustration of headlamp pattern selected and “Visual
Assist” meter has reached its highest achievable
reading for that lamp.
NOTE: Graphics on aiming screen denote position
of lamp position in inches. Outer box
denotes 8 inches, inner box denotes 4
inches. Each hash mark denotes 1 inch
increment.
•Repeat steps 2 through 4 for remaining lamps.
6. LASER CALIBRATION / MAINTENANCE
5.1 FLOOR SLOPE LASER CALIBRATION
“LASER IS CALIBRATED AT THE FACTORY PRIOR TO SHIPMENT”
Locate an elevated surface and lay the straight edge on surface facing away from
optical head. Check straight edge for level, shim if necessary.
Move CVA 3
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optical head so that the mounted laser will shoot down the straight edge.
Adjust the rear floor slope wheel until the level in the optical head is centered. Readjustment of
height of optical block may be necessary.
Adjust the rear height adjustment set screw of the laser assembly (Lock Tight has been installed
on screw at factory, minor pressure should break seal) till laser is viewed at both ends of straight
edge equally.
Laser is now calibrated, installing lock tight or other adhesive to adjustment screw is
recommended.
5.2 MAINTENANCE
The CVA 3
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will provide years of trouble free operation with minimum maintenance, however, care
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should be taken in the day-to-day usage of this service instrument. Following are areas that should be
periodically checked and serviced;
•Check wheel axles nuts for tightness, minor
lubrication is recommended.
•Check the optical head mounting bolts for
tightness and tighten as required.
ONLY
if Rear- LASER Adjustment Set Screw has
to end of straight edge, turn on the laser and adjust height of
10
8 inches
H
H
4 inches
V
Page 11
•Check all other mounting screws, bolts and nuts
for tightness.
•Clean the mast area where the brake rides with a
mild detergent to assure of secure holding.
•Clean the front lens, sighting unit and viewing
window with a mild detergent being careful to
use a non-abrasive soft cloth.
6. FREQUENTLY ASKED QUESTIONS
Question: Level in optical head is not centered during alignment procedure?
Answer: Level vial is used ONLY when checking the calibration of the floor slope laser.
Question: The high intensity (hot spot) area of the headlamp how is this determine?
Answer: All lamps are legislated to be created equal, but this has proven not to be the case. The”CVA 3EZ”
ISOColor incorporates color definition technology that defines the high intensity zone for ease of
alignment. The most inner circle of color is the high intensity zone, this area should be centered over
the area that is designated by the arrow of the specific lamp pattern being aligned.
Question: Do I have to check for floor slope every time I perform a headlamp
Answer: Floor slope need only be performed one time in each bay that the CVA 3EZ is to be used. When
Question: I cannot attain equal readings at the front wheel and the rear wheel areas when determining the
Answer: The only time that this can occur is when the shop bay has an abnormally excessive angle of slope.
Question: What do I use as reference when squaring the CVA 3
Answer: It is always recommended to check the alignment of the line laser to the vehicle for every lamp to be
Question: Can the “Visual Assist” meter measure light intensity?
Answer: The “Visual Assist” meter DOES NOT MEASURE LIGHT INTENSITY. It assists in locating the
Question: Why does the “Visual Assist” meter have a higher reading on one side of the car than the other?
Answer: Most vehicles will have lamps of varying intensity and patterns. Just use the meter and adjust to the
Question: Can I use the “Visual Assist” meter to help line up the optical head with the headlamp?
Answer: YES. While observing the meter, roll the CVA 3
Question: How do I change the batteries in the “Visual Assist” meter?
alignment?
determining the floor slope, record the reading of the rear eccentric wheel on the sticker provided,
Each time you are in that bay, refer to the sticker and adjust the rear eccentric to that measurement.
floor slope.
The most frequent problem with determining floor slope is patience in adjusting until the
measurements are equal. A TRICK to assist in making this measurement is to first measure the height
of the laser at the optical head. Then turn the eccentric wheel until the laser reading matches the
measurement of the optical head at the rear wheel area. Check readings at front and rear wheel areas
and make, if any, minor adjustments to equal measurements. RECORD READING OF ECCENTRIC
WHEEL FOR FUTURE REFERENCE.
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to the vehicle and do I need to
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square again when moving from one lamp to another?
aligned. Some reference points that are prominent on most vehicles are the grill, hood line, radiator
support, hood bumpers and common assembly point bolts. Always pick two points that are of equal
proportion.
highest value reading of that particular lamp. If a light intensity meter is an instrument your facility
would like to procure, SYMTECH offers the “AIM 200”, a hand held, self-contained precision
instrument specifically designed for measuring automotive light intensities.
highest value reading for that particular lamp.
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back and forth horizontally and raise and
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lower the optical head vertically until you achieve the highest metered reading.
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Answer: The meter does not have batteries, power is provided by the light of the headlamp.
Question: Is there a calibration procedure for the “Visual Assist” meter?
Answer: NO calibration of meter is required.
WARRANTY
All Symtech Corporation products are warranted to be free from defects in material and workmanship under
normal user service for a period of one year after the sale of the product. Exception to this policy will be
individually evaluated and must be approved by Symtech Corporate. The sole obligation under this warranty shall
be to repair, or replace any defective products or parts thereof, which upon examination are deemed to the
seller’s satisfaction to be defective.
The warranty shall not apply to any product, which has been subject to misuse, negligence, or accident. The
seller shall not be responsible for any special or consequential damages and the warranty as set forth is in lieu
of all other warranties, either expressed or implied. However, the seller makes no warranty of merchantability in
respect to any products for any particular purpose other than that stated in literature and any applicable
manufacturer shop or service manuals referred to therein, including any subsequent service bulletins.
The CVA 3, ISOColor Optical Headlamp Alignment System has been tested by an AMECA accredited
independent laboratory and found to comply with the Society of Automotive Engineers (SAE) recommended
practices prescribed in standards j599, j600, j1383 and j1735.
The seller makes no claims or warranties of any kind that the Symtech Corporation Optical Headlamp
Alignment Systems will align headlamps that do not conform to Society of Automotive Engineers recommended
practices described in j599, j600, j1383, and j1735.
Safety by Design
12
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