ENGINE DIAGNOSTIC TOOLS
Section 4
DESIGN TECHNOLOGY "TECH TIME" Model 3354
Dynamic Timing Meter (For 6.9 Liter Diesel)
DESCRIPTION
OF
FRONT
PANEL
AND
ATTACHMENTS (All Reference Nos. refer to Figure
10)
•
The Function Control Switch (1) has four
positions:
-
LIGHT - Selects the timing method of
crankshaft monitoring.
-
PROBE - Selects the magnetic probe
method
of
crankshaft
monitoring
for
engines equipped with a probe holder over
the vibration damper, as in the 6.9 Liter
Diesel.
-
OFFSET - When in this position, the
"Degree Display" will indicate the number of
degrees after TDC that the magnetic probe
access hole is located.
-
AVE. - Controls the number of seconds
over which RPM pulses are averaged.
When switched to this position, the unit will
display "AVE. 1.4". This represents the
initial 1.4 second averaging time set in
when power is first applied. To change this
number [with switch in AVE. position] tap
either the or "Adjust" button to decrease
or increase the averaging time. Each tap of
the button will change the time by 0.1
second. Total adjust range is 0.1 to 6
seconds. This adjustment allows the
operator to monitor engine speed variation
to whatever response time is desired. For
most purposes, an averaging time of 1 to 2
seconds gives a steady reading.
•
SOCKET (2) to connect timing light.
•
JACK (3) to connect magnetic probe.
•
PICK-UP (4) for bayonet connector to connect
clamp-on transducer.
•
ADJUST BUTTONS (5) used to change the
offset of the timing unit to agree with the off-set
of the magnetic probe access hole on the
engine, or to change the averaging time of the
display.
•
TRIGGER POINT SWITCH (6) used to select
the point on the fuel pressure curve at which the
timing unit will trigger.
IMPORTANT
USE HIGH TRIGGER SETTING ONLY FOR
THE 6.9 LITER.
•
POWER SOURCE CLIPS (7) to be connected to
vehicle battery RED to "+", BLACK to “ - “.
CAUTION!
Observe polarity, the timing unit itself is
protected against reverse polarity, however,
damage to the cables may result!
•
CLAMP ON TRANSDUCERS (8) available in
three sizes: 1/4 in (black), 6 mm (green) and 5
mm (red).
•
TRANSDUCER CONNECTING CABLE (9).
•
TIMING LIGHT (10).
•
DISPLAY (11): Left side shows RPM, right side
indicates
DEGREES
OF
ADVANCE,
PROGRAMMED OFFSET and AVERAGING
TIME.
CGES-240-4
Printed in United States of America
Page 13
