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TIMING LIGHT
INSTRUCTIONS
CP7527 INDUCTIVE
CP7528 ADVANCE
CP7529 DIGITAL
Actron, is a Business Unit of SPX Corporation.
Page 2
TABLE OF CONTENTS
SAFETY PRECAUTIONS ............................................................ 2
TIMING LIGHTS........................................................................... 5
HOOKUP PROCEDURE.............................................................. 7
MEASURING ENGINE RPM...................................................... 10
MEASURING INITIAL TIMING.................................................... 11
SETTING INITIAL TIMING ......................................................... 13
CHECKING & MEASURING CENTRIFUGAL ADVANCE ......... 15
MEASURING VACUUM ADVANCE ........................................... 19
DISCONNECTING TIMING LIGHT ............................................ 22
TROUBLESHOOTING AND CARE ........................................... 23
FRANCAIS INSTRUCTIONS ....................................... 26
ESPAÑOL INSTRUCCIONES...................................... 54
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SAFETY PRECAUTIONS
For safety reasons, read this manual thoroughly before operating Timing Light.
Always refer to and follow safety messages and test procedures provided by
manufacturer of vehicle or equipment being tested.
The safety messages presented below and throughout this manual are
reminders to operator to exercise extreme care when using this test instrument.
WARNING
!
IMPORTANT
SAFETY EQUIPMENT
Fire Extinguisher
For gasoline/chemical / electrical fires
Safety Goggles
Protect eyes from Battery Acid / Gasoline / Flying Debris
Protective Gloves
Protect Hands from Battery Acid / Hot Exhaust / Engine Parts / Flying Debris
Indicates a potentially hazardous situation which, if not avoided,
could result in serious injury or death.
Indicates a situation which, if not avoided, may result in damage to
the test equipment or vehicle.
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SAFETY INSTRUCTIONS
Ventilation
Operate vehicle in ventilated area.
Moving Parts
Remove Jewelry
Do Not Wear Loose Clothing
Tie Up Long Hair
Keep Hands Away From Moving Parts
Set Brake
Place Car In:
Park (For Automatic)
Neutral (For Manual)
Set Parking Brake
Disable Automatic Parking Brake Release
Smoking and Open Flames
Never smoke while working on car
Keep sparks, and open flames away from vehicle
Do not use fuel injector cleaning solvents when performing diagnostic tests
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Hot Surfaces
Avoid Contact With:
Exhaust Manifolds
Pipes
Radiator
Mufflers (catalytic converters)
Battery
Do Not Lay Tools on Battery
Do Not Touch Battery Acid
Do Not Create Short Between Terminals
If using an auxiliary battery:
Connect Jumper Wire Between Negative Terminal on Auxiliary Battery
and Ground on Vehicle
Place Battery at least 18 inches Above Floor
High Voltage
30,000 to 50,000 Volts Present At:
Ignition Coil
Distributor Cap
Ignition Wires
Spark Plugs
Use Insulated Pliers
Do Not Use Timing Light if Cords are Damaged
4
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TIMING LIGHTS
11
6
CP7529
DIGITAL
2/4
Cycle
7
RPM
Adv
CP7528
15
ADVANCE
CP7527
INDUCTIVE
10
13
8
14
12
14
9
5
16
16
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2
3
4
5
1
1. Timing Light
2. Lens
3. Inductive Pickup Clamp
4. RED Clip
5. BLACK Clip
6. 4-digit LED Display
7. 2 Cycle Mode Indicator
8. 4 Cycle Mode Indicator
9. RPM Mode Indicator
10.Advance Mode Indicator
11.2/4 Cycle Mode Button
12. Flashlight Button
13.RPM/Adv Mode Button
14. Increase and Decrease
Advance Buttons
15. Advance Knob
16.ON Button
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HOOKUP PROCEDURE
1. Turn Vehicle OFF.
WARNING
!
Connecting cables with engine running could result in serious
injury.
2. At distributor, disconnect and plug vacuum line.
3. Attach Inductive Pickup Clamp
· Refer to vehicle service manual.
· Clamp on #1 spark plug wire.
IMPORTANT
Do not allow inductive
Inductive Pickup
Clamp
pickup to touch hot exhaust
manifold or surrounding
parts.
Red
Clip
PO .S
Close the inductive pickup
jaws slowly to prevent
damage.
Connect Inductive Pickup Clamp, Red Clip and Black Clip
7
# 1 Spark Plug Wire
Black Clip
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4. Connect RED and BLACK Battery Clips on Negative Ground Electrical
Systems.
· Connect RED to positive (+) battery post.
· Connect BLACK to engine ground.
IMPORTANT
On 6-volt electrical systems, use an auxiliary 12-volt battery to
power timing light. Connect BLACK clip to negative (-) post and
RED clip to positive (+) post on auxiliary 12- volt battery. Use 18
AWG or larger wire to connect 12-volt battery negative (-) terminal
to a good engine ground.
On 12-volt Positive Ground electrical systems, connect BLACK clip
to negative (-) battery post and RED clip to engine ground. DO NOT
USE the positive battery post.
On engines equipped with a breaker point ignition system, it will be
necessary to set the point dwell before adjusting the timing. Always
follow the manufacturers specifications and test procedures for
adjusting dwell angle and idle speed.
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TDC
UDC 1-6
16N
OP 1-6
O
A
3
6
10
0
DC
10
10
5. Locate the Timing Marks on the Engine
· The Digital Timing Light is equipped with
a flashlight feature. Press and hold the
button for continuous lighting.
6. Set 2/4 CYCLE OPERATION (Digital
Timing Light Only)
· Use 2-cycle mode on 2-cycle engines and
on vehicles equipped with waste-spark
distributorless ignition systems (DIS).
IMPORTANT
When connected to the battery, the timing light defaults to the 4cycle, tachometer mode.
· Press and release button until correct indicator lights.
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MEASURING ENGINE RPM
(Digital Timing Light Only)
1. Press and Release Button Until RPM Indicator Lights.
IMPORTANT
Always follow test procedures in vehicle service manual or Vehicle
Emission Control Information Label. Instructions given here are for
reference only.
If engine is not running or #1 spark plug is not firing, timing light
display will flash, indicating that no signal is being received.
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MEASURING INITIAL TIMING
1. Follow preparation list for checking
# 1 Spark Plug Wire
timing in vehicle service manual.
2. Start engine and warm to operating
Inductive Pickup
Clamp
temperature.
3. Aim timing light at crankshaft
damper (pulley) or at transmission
bell housing, depending on location
of timing marks.
Red
Clip
PO .S
INDUCTIVE TIMING LIGHT
1. Press and hold down button.
2. Write down initial timing by counting the timing marks
on the engine.
11
Black Clip
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ADVANCE TIMING LIGHT
1. Press and hold down button.
2. View timing marks. Turn advance knob until
moving mark is aligned with stationary 0 degree
timing mark (Top Dead Center).
3. Write down initial timing from dial on timing light.
DIGITAL TIMING LIGHT
Advance
Knob
IMPORTANT
When connected to the battery, the timing light
defaults to the 4-cycle, tachometer mode.
1. Press and release button until ADV indicator lights.
2. View timing marks. Push and buttons until
moving mark is aligned with stationary 0 degree mark.
3. Write down initial timing from timing light display.
12
2/4
Cycle
RPM
Adv
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SETTING INITIAL TIMING
INDUCTIVE TIMING LIGHT
1. Press and hold down button.
2. Loosen distributor hold down bolt and turn
distributor as necessary until moving mark is aligned
with correct stationary timing mark.
3. Tighten distributor hold down bolt securely.
ADVANCE TIMING LIGHT
1. Turn advance knob to desired degrees advance
setting.
2. Press and hold down button.
13
Advance
Knob
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3. View timing marks. Loosen distributor hold down bolt and turn
distributor until moving mark is aligned with stationary 0 degree
mark.
4. Tighten distributor hold down bolt securely.
DIGITAL TIMING LIGHT
1. Push and buttons until display shows
desired degrees advance setting.
2/4
2. View timing marks. Loosen distributor hold down
bolt and turn distributor until moving mark is aligned
with stationary 0 degree mark.
3. Tighten distributor hold down bolt securely.
14
Cycle
RPM
Adv
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CHECKING & MEASURING
NOTES
ADVANCE READING (RPM NOTED
IN SERVICE MANUAL OR VECI)
TIMING AT IDLE
CENTRIFUGAL ADVANCE
CENTRIFUGAL ADVANCE
INDUCTIVE TIMING LIGHT
1. Leave distributor vacuum line disconnected
and plugged.
2. Press and hold down button. Note
position of timing mark at idle speed.
3. Slowly increase engine speed to 2500 RPM, or other speed specified
by manufacturer. Timing mark should move smoothly in opposite
direction of engine rotation. Note degrees advance at higher RPM.
4. Subtract degrees advance at idle from degrees at higher speed.
Difference is amount of centrifugal advance.
5. Slowly decrease engine speed to idle RPM. Timing mark should move
smoothly in direction of engine rotation, and return to idle position.
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ADVANCE TIMING LIGHT
NOTES
ADVANCE READING (RPM NOTED
IN SERVICE MANUAL OR VECI)
TIMING AT IDLE
CENTRIFUGAL ADVANCE
1. At distributor, leave vacuum line disconnected and plugged.
2. Press and hold down button. View timing marks. Turn advance
knob until moving mark is aligned with stationary 0 degree mark.
Note degrees advance at idle speed.
3. Slowly increase engine speed to 2500 RPM,
or other speed specified by manufacturer.
Timing mark should move smoothly in
opposite direction of engine rotation.
4. Turn advance knob until moving mark is
aligned with stationary 0 degree mark.
5. Subtract degrees advance at idle from
degrees at higher speed. Difference is
amount of centrifugal advance.
6. Slowly decrease engine speed to idle RPM. Timing mark should move
smoothly in direction of engine rotation.
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DIGITAL TIMING LIGHT
NOTES
ADVANCE READING (RPM NOTED
IN SERVICE MANUAL OR VECI)
TIMING AT IDLE
CENTRIFUGAL ADVANCE
1. At distributor, leave vacuum line disconnected and plugged.
2. Push and buttons until moving mark is aligned with the
stationary 0 degree mark. On display, note degrees advance at idle.
3. Slowly increase engine speed to 2500 RPM, or other speed specified
by manufacturer. Timing mark should move smoothly in opposite
direction of engine rotation.
4. Push and buttons until moving
mark is aligned with stationary 0 degree
mark.
5. Subtract degrees advance at idle from
degrees at higher speed. Difference is
amount of centrifugal advance.
6. Slowly decrease engine speed to idle RPM.
Timing mark should move smoothly in direction of engine rotation.
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LEFT BLANK ON PURPOSE
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MEASURING VACUUM ADVANCE
NOTES
RPM XXXX
VACUUM XXXXX
ADV. RPM XX
VACUUM XX
ADVANCE WITH VACUUM
- ADVANCE WITHOUT VACUUM
Contribution of Vacuum
Checking the vacuum advance mechanism requires a vacuum pump with
gauge in addition to the timing light.
INDUCTIVE TIMING LIGHT
1. Leave distributor vacuum line disconnected
and plugged. Connect vacuum pump to
distributor.
2. Increase engine speed to RPM specified by
vehicle manufacturer.
3. Press and hold down button. Note advance at specified RPM.
4. Use pump to apply vacuum specified by manufacturer. Note degrees
advance with vacuum applied.
5. Subtract degrees advance without vacuum from degrees with vacuum
applied. Difference is amount of vacuum advance.
6. Remove vacuum from distributor and return engine speed to idle.
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ADVANCE TIMING LIGHT
NOTES
RPM XXXX
VACUUM XXXXX
ADV. RPM XX
VACUUM XX
ADVANCE WITH VACUUM
- ADVANCE WITHOUT VACUUM
Contribution of Vacuum
1. At distributor, leave vacuum line disconnected and plugged. Connect
vacuum pump to distributor.
2. Increase engine speed to RPM specified by vehicle manufacturer.
3. Use pump to apply vacuum specified by manufacturer.
4. Press and hold down button. Turn
advance knob until moving mark is aligned
with stationary 0 degree mark. Note
advance at specified RPM.
5. Subtract degrees advance without vacuum
from degrees with vacuum applied.
Difference is amount of vacuum advance.
6. Remove vacuum from distributor and return
engine speed to idle.
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DIGITAL TIMING LIGHT
NOTES
RPM XXXX
VACUUM XXXXX
ADV. RPM XX
VACUUM XX
ADVANCE WITH VACUUM
- ADVANCE WITHOUT VACUUM
Contribution of Vacuum
1. At distributor, leave vacuum line disconnected and plugged. Connect
vacuum pump to distributor.
2. Increase engine speed to RPM specified by vehicle manufacturer.
Push and buttons until moving
mark is aligned with stationary 0 degree
mark. Note advance at specified RPM.
3. Use pump to apply vacuum specified by
manufacturer.
4. Push and buttons until moving
mark is aligned with stationary 0 degree
mark. Note degrees advance with vacuum applied.
5. Subtract degrees advance without vacuum from degrees with vacuum
applied. Difference is amount of vacuum advance.
6. Remove vacuum from distributor and return engine speed to idle.
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DISCONNECTING TIMING LIGHT
1. Turn Vehicle OFF.
WARNING
!
2. At distributor, unplug and reconnect vacuum line.
3. Remove Inductive Pickup Clamp.
4. Disconnect RED and BLACK Battery Clips.
Disconnecting cables with vehicle engine running could result
in serious injury.
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TROUBLESHOOTING AND CARE
Timing Light Flashes Randomly
1. Clean Inductive Pickup Clamp
Inside Surfaces with Soft Cloth
IMPORTANT
Do not allow tool to touch
exhaust manifold or
surrounding parts due to
extreme heat.
Do not drop pickup or snap it
shut. Always close jaws
slowly to prevent damage.
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Clean Areas
Page 25
2. Slide Inductive Pickup Clamp
To new spot on #1 spark plug wire
3. Turn Inductive Pickup Over
To opposite direction on #1 spark
plug wire
4. Replace Spark Plug Wire
If solid copper spark plug wires are
used replace #1 spark plug wire
with a resistive type wire.
Reinstall original spark plug wire
after completing test.
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FULL ONE (1) YEAR WARRANTY
SPX Corporation, 15825 Industrial Parkway, Cleveland, Ohio 44135, warrants to
the user that this unit will be free from defects in materials and workmanship for
a period of one (1) year from the date of original purchase.
Any unit that fails within this period will be repaired or replaced at SPX
Corporations option and without charge when returned to the Factory. SPX
Corporation requests that a copy of the original, dated sales receipt be returned
with the unit to determine if the warranty period is still in effect.
This warranty does not apply to damages caused by accident, alterations, or
improper or unreasonable use. Expendable items, such as fuses, lamp bulbs,
flash tubes are also excluded from this warranty.
SPX CORPORATION DISCLAIMS ANY LIABILITY FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES FOR BREACH OF ANY WRITTEN
WARRANTY ON THE UNIT.
Some states do not allow the disclaimer of liability for incidental or consequential
damages, so the above disclaimer may or may not apply to you. This warranty
gives specific legal rights, and you may also have rights which vary from state to
state.
If you have any questions about the operations of the product, call (800)228-
7667.
© 2005 SPX Corporation All Rights Reserved.
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