ENGINE DIAGNOSTIC TOOLS
Section 4
KENT-MOORE TACH-N-TIMETM
DYNAMIC TIMING METER
SE-4142 (FOR 6.9 Liter Diesel)
DESCRIPTION
The SE-4142 TACH-N-TIMETM from Kent-Moore uses
the latest in microprocessor technology to quickly and
accurately measure fuel injection pump timing.
The pump pulse is picked up by a piezoelectric
transducer that clamps on the No. 1 fuel injection line.
Crankshaft location is picked up with a magnetic probe.
The probe offset is automatically computed by the SE-
4142 TACH-N-TIMETM.
Using the pump pulse signal and the crankshaft location
signal, a microprocessor gives a digital display of exact
engine RPM and injection pump timing in degrees.
Figure 8. TACH-N-TIMETM INSTRUMENT
SE-4142
OPERATING PROCEDURES
1.
Select the ¼ in. transducer (black).
2.
Clamp-on the ¼ in. piezoelectric transducer to
the No. 1 fuel injection line (See Figure 9) at the
injection nozzle end.
IMPORTANT
•
THE TRANSDUCER MUST BE PLACED
ON A STRAIGHT SECTION OF THE
FUEL LINE WITHIN 4 IN. OF THE
INJECTION NOZZLE.
•
CLEAN THE FUEL LINE WITH ABRASIVE
CLOTH OR STEEL WOOL TO REMOVE
ALL PAINT PRIOR TO AFFIXING THE
TRANSDUCER.
•
DO NOT ALLOW THE TRANSDUCER TO
CONTACT THE INJECTION LINE NUT.
•
DO
NOT
OVERTIGHTEN
THE
TRANSDUCER ON THE FUEL LINE. A
"SNUG"
FIT
IS
ALL
THAT
IS
NECESSARY FOR PULSE DETECTION.
3.
Connect ground clip from transducer harness to
an appropriate ground as shown in Figure 9.
4.
Connect the remaining wire from the transducer
harness to the plug in receptacle on the SE-4142
body labeled "SENSOR SIGNAL".
IMPORTANT
TRANSDUCER MUST BE DRY. WET CONDITIONS
CAN CAUSE ERRATIC READINGS. IF ERRATIC
READINGS
ARE
OBSERVED,
REMOVE
TRANSDUCER, WIPE LINE AND TRANSDUCER WITH
A CLEAN, DRY CLOTH AND SPRAY TRANSDUCER,
ON ALL SURFACES, WITH A WATER DISPLACING
SUBSTANCE, SUCH AS WD-40® AND RECLAMP ON
THE FUEL LINE.
5.
Set "SENSOR SIGNAL" toggle switch to the
"CLAMP ON" position.
6.
6.9 Liter Diesel uses magnetic probe method for
determining crankshaft position.
CGES-240-4
Printed in United States of America
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