OPERATOR
MANUAL FOR THE D14 "DISTRIBUTOR TESTER"
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INDEX |
ELECTRONIC
DISTRIBUTORS WITH
COIL
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D14
DISTRIBUTOR TESTER The
D14 distributor tester is a complete service instrument designed to
check distributor performance. POWER
SUPPLY The D14 distributor tester
operates from 115 volts 50/60 hertz 8 amps DRIVE
MOTOR A heavy duty motor and
speed control provide a wide range of speeds (up to 5000 RPM) in both
clockwise and counterclockwise directions. VACUUM
PUMP-- The vacuum system includes a vacuum pump and vacuum gauge with
control for variable vacuum readings. TEST
SELECTOR—The test selector switch controls the operation of the test
set. Ac power to the tester is controlled by a separate power On/Off
switch with a pilot lamp. ALWAYS
TURN THE MOTOR POWER 'OFF' BY TURNING THE SPEED CONTROL FULL
COUNTERCLOCKWISE BEFORE TURNING TESTER ON. METERS:
The D14 displays the following meters and gauges
Analog Tachometer indicates distributor RPM
The CAM ANGLE meter includes condenser test, points
resistance test and cam angle degree scale for 4,6,8
cylinder point dwell.
RESISTANCE meter displays resistance values in 4 ranges
X 1 ohm, X 10 ohms, X 100 ohms and X 10k ohm.
VACUUM GAUGE displays vacuum
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1.0
Turn the 'MOTOR SPEED CONTROL FULL COUNTERCLOCKWISE'
and 'MAIN POWER'
switch in the 'OFF position. 1.1
Connect the D14 distributor tester to an AC power
source 115volts
50/60 Hertz 8 amps 1.2
CAUTION DO NOT OPERATE MOTOR without a distributor
mounted in the chuck. Select the distributor drive
rotation BEFORE operating the motor. DO NOT REVERSE
the motor direction with motor running. Always turn the
speed control full counterclockwise (off) before
reversing direction. Failure to do this may damage the
distributor
under test. 1.3
Mount the distributor in the V clamp and lower it
into the chuck. Clamp the distributor firmly and
align the clamp
over the center position. Rotate the
disk by hand until the clamp is properly centered and
the disk rotates freely. Tighten distributor clamp
knob. 1.4 Turn the Main power 'on' and adjust the speed control clockwise until the distributor is turning at a slow
speed to check for good alignment. 1.5 Turn the Main Power and the motor speed control full counterclockwise. Continue testing by going to the section best describing the type of distributor under
test. These are as
follows:
Section 2.0 Electronic distributor with coil
Section 3.0 Electronic distributor without coil.
Section 4.0 coil test
Section 5.0 standard points distributor without coil
Section 6.0 standard points distributor with coil
Section 7.0 Standard condenser test
Section 8.0 Ohmmeter operation
Section 9.0 Helpful test instructions
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4.1
Insure that the D14 'Main power ' is 'Off'. 4.2
Insure the motor speed control full CCW 4.3
Connect the coil up as follow
a Connect
the coil + side (battery) to the
D14 'BLUE' test lead.
b
Connect the coil - side (points or module) to the
D14 ‘Yellow ' test lead
c Connect
the D14 High Tension lead (red) to the
the coil high tension output. 4.4
Set the D14 controls as follows
a
Dial-A-Tronic switch to 'Coil Test'
b Ohmmeter
settings do not apply
c Standard
(Dwell) Test Switch does not apply
d Motor
speed control full Off (CCW)
e
Motor direction CW or CCW . 4.5
Turn the D14 Main Power 'On'
4.6
Turn the Motor speed Control Clockwise until the motor
begins to turn. The neon tube should flash indicating the
the coil is working . There should be two equally spaced
marks on the neon tube. A good coil will produce
uniform
marks on the neon display. 4.7
To stop the test Turn the 'Motor speed control' full CCW.
Turn the D14 'main Power' 'Off' Disconnect
the coil and remove it from the Tester. |
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7.1
Insure that the
D14 'Main Power and "Motor speed control is full CCW. 7.2
Set the standard test switch to 'Capacity test'
All other switches do not apply. 7.3
Connect the condenser between the D14 'Blue' and 'Yellow
test leads. 7.4
Turn on the D14 'Main Power'
The condenser capacity
in micro-farads will be displayed
on the capacity scale of the dwell meter. Condenser test
accuracy is +/-25%
A shorted condenser will read full scale and an open or
leaky condenser will read below specifications. 7.5
Condenser test complete
Turn off the D14
'Main power' and disconnect the
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8.1
The D14
incorporates a 4 range ohmmeter.
To use the
ohmmeter set the 'Dial-A-Tronic' switch to
'Ohmmeter'.
Turn the D14 main
power 'On' and select the ohmmeter
range x1 ohm, x100 ohms, x1k ohm or x10k ohms. 8.2
Connect the device to be measured between the D14
'Blue' and 'Yellow' test leads. and read the resistance
on the appropriate scale on the ohmmeter. 8.3
When complete disconnect the test leads. |
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9.1
Ford-Lincoln-Mercury double diaphragm distributors
Some Ford type loadamatic distributors incorporate a
Double Diaphragm type spark advance for better control of
breaker plate advance characteristics. The purpose of the
second diaphragm is to provide a rapid spark retard at the
acceleration tip in point. The primary spark control
diaphragm (next to the distributor body) operates in the
same manner as a single diaphragm. The secondary diaphragm
(furthest from the distributor body) is not connected to
either the breaker plate or the primary diaphragm.. There is an air chamber between the two diaphragms. the secondary diaphragm is held in an outward position by straight intake manifold
vacuum working against a calibrated spring.
In operation the secondary diaphragm forces a quick
momentary spark retard while the distributor vacuum line,
carburetor vacuum passages and primary spark control diaphragm are normalizing to new pressure conditions, which develop when the carburetor spark control valve closes the manifold vacuum passage in the carburetor. when the throttle is opened for rapid acceleration,
manifold
moves toward the primary control diaphragm. The
between the two diaphragms
a fast spark retard to minimize detonation.
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A electronic pick-up coil can be performance
checked off the vehicle on the D14 . Mount the
distributor on the D14.
note the pick-up coil
must produce .2 vdc to be tested on the D14. 10.1
Connect the D14 black test lead to the pick-up
low side, see manufacture specification.
Connect the pick-up coil high side to the D14
'Yellow' test lead. 10.2
Set the D14 controls as follows
a
Dial-A-Tronic switch to 'pick-up coil'
b Ohmmeter
settings do not apply
c Standard
(Dwell) Test Switch does not apply
d Motor
speed control full Off (CCW)
e Motor
direction CW or CCW as required by the
distributor under test.
f Vacuum Pump
'Off' 10.3
Turn the D14 Main Power 'On' 10.4
Turn the Motor speed Control Clockwise until the motor
begins
to turn. The neon tube should flash indicating the
number of plugs on the distributor. 10.5
Turn the motor speed control up until the
distributor is running at normal engine RPMs the flashes should indicate
a stable pattern. 10.6
Note the spacing of all the flashes in relation to the
protractor 4,6, or 8 markers. flashes must be evenly
spaced , within 3 degrees. Uneven flashes are caused by
worn bushings,
bent shaft or word or defective pick-up
coil plate. 10.7
Vacuum tests for distributors with a mechanical vacuum
advance.
If the distributor has no vacuum control skip
to section 3.10. Turn the 'Vacuum ' pump switch 'On' Hold thumb tightly over the end of the 'Vacuum Hose' and adjust the "Vacuum Control 'Vacuum gauge reads 18. Now connect the hose to the distributor vacuum advance nipple. The Vacuum Gauge should return to 18 if is does not the Vacuum advance unit
has a leaky diaphragm . 10.8
Turn the Vacuum control until the Vacuum Gauge reads 0 or
pull the
vacuum hose off of the nipple. 10.9
Vacuum advance test.
With the hose or zero vacuum adjust the distributor flash
to protractor zero. Gradually increase the vacuum and
observe the movement of the neon flash. Replace the vacuum
control or recalibrates spring tension when vacuum
advance does not perform according to specified limits.
any deviation over 3 degrees indicates wear in the pick-up
coil plate or bearings. 10.10
To stop the test Turn the 'Motor speed control' full CCW.
Turn
the D14 'main Power' 'Off'
Disconnect the Distributor and remove it from the Tester. |
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Some electronic modules
can be tested
off the vehicle on
the D14 .
see module
manufacture specifications. 11.1
Connect the module as
follows.
Connect the D14 black test lead to the module
ground (-) side
Connect the D14 Red lead to the module Battery (+) lead.
Note some electronic modules
require a regulated power
supply. The use a 12v battery for this purpose.
Connect the module trigger or pick_up coil lead(+) to
D14 'Yellow' test
lead.
Connect the module Coil (output) lead to the D14
'green' test lead. 11.2
Set the D14 controls as follows
a Dial-A-Tronic
switch to 'MODULE'
b Ohmmeter
settings do not apply
c Standard
Dwell Test Switch does not apply
d Motor
speed control full Off (CCW)
e Motor
direction CW or CCW as required by the
distributor under test.
f Vacuum Pump
'Off' 11.3
Turn the D14 Main Power 'On',
Turn Motor Power 'On' 11.4
Turn the Motor speed Control Clockwise until the motor
begins to turn. The neon tube should flash indicating
two flashes per revolution. The
D14 produces two trigger
pulses per revolution. The modules under test creates
the coil drive signal that indicates the flashes on the
D14. The flashes should be uniform and not intermittent.
Turn the motor speed control up until normal engine speed
for the module under test is reached. 11.6
To stop the test Turn the 'Motor speed control' full CCW.
Turn the D14 'main Power' 'Off' Disconnect
the module and remove it from the Tester. |