Associated Equipment 6042 - Manual (Page 7)

7
A GM ALTERNATOR HAS A DIFFERENT PROCEDURE FOR FULL FIELDING:
1) Locate a "D" shaped hole in the rear of the alternator.
2) Insert a small screwdriver or any other metal rod in the hole
until you contact a metal tab (less than 3/4 inch). Ground the
screwdriver or rod to the case and apply a load per above
instructions.
If the regulator is determined to be bad, check that it is making
a good ground connection to the vehicle chassis. Also, check
that the wire from the regulator to the alternator field terminal is
making good connections and does not have any breaks in it.
MEASURING SMALL CURRENTS:
The BEST tester will measure currents down to one
amp in value. If smaller currents need to be
measured, follow the steps below.
TO CHECK CURRENT DRAW OF A
SPECIFIC ELECTRICAL DEVICE:
1) Attach unit to battery as shown.
2) Disconnect the power lead to the device under
test.
3) Coil the field lead of the unit 10 times around
your hand and connect the clip to the power
input terminal of the device under test.
4) Clip the AMPS PICKUP around the 10 turns of
wire.
5) Press the FIELD switch to the "B" position and
read the ammeter on the unit.
6) Divide the ammeter reading by 10 to give the
actual current draw of the device under test.
TO CHECK CURRENT DRAW OF ENTIRE ELECTRICAL SYSTEM:
1) Disconnect the negative load from the battery.
2) Attach unit as shown (See figure 13).
3) Clip blue lead to the negative wire just removed from the
battery.
4) Wrap the blue lead around your hand 10 times and clip
AMPS PICKUP around the coil.
5) Push FIELD switch to the "A" position. Read the ammeter.
Release switch.
6) Divide ammeter reading by 10 to give the total current draw
of the vehicle from the battery.
6042 B.E.S.T. TESTER TROUBLE SHOOTING HINTS:
If the meter displays fail to light when the unit is connected to a
charged battery, remove the unit's cover and look at the back of the
circuit board. There are two LED's in the top middle of the board. If
both of these are lit, there is a problem on the circuit board that must
be diagnosed by a factory technician. If one LED is lit, the fuse on
the rear of the board is blown and should be replaced. Replace with
an AGC 1 fuse.
The fuse blew to protect the board against an over voltage situation
that would have damaged the solid state components on the board.
If neither LED is lit, there is no incoming power to the circuit board.
Check for good connection at the battery. Also check (with an
ohmmeter) the tracer lead in the heavy duty leads to be sure there is
a circuit from the clamp jaws to the power strip on the circuit board.
ASSEMBLY INSTRUCTIONS
Parts included with this unit are listed in the part list. Item numbers
appear on the exploded view, part list and throughout the text for
easy reference.
PARTS LIST
ITEM
DISCONNECT
POWER TO DEVICE
UNDER TEST
BLUE LEAD
(FIELD)
FRAME
+ -
FIGURE 12
DEVICE
UNDER TEST
FIGURE 13
BLUE LEAD
(FIELD)
FRAME
FRAME
+ -
QTY DESCRIPTION
1. 1 ........................................................................ Lower Tray
2. 1 ........................................................................ Upper Tray
3. 2 ......................................................................... Back Legs
4. 20 ..................................................................¼-20x2”
Bolts
5. 20 .....................................................................¼” Washers
6. 20 ................................................................ ¼-20 Hex Nuts
7. 2 .........................................................................Front Legs
8. 1 ...........................................................................Top Plate
9. 1 ...............................................................................Handle
10. 4 ................................................... #10x1”
Machine Screws
11. 4 ................................................................. 10-24 Hex Nuts
12. 1 ........................................................ B.E.S.T. Control Unit
13. 4 ....................................................................... Plastic Feet
14.
4 ............................................... #10x1 ¼” Machine Screws
15. 2 ...........................................................................Axle Nuts
16. 1 ................................................................................... Axle
17. 2 .............................................................................. Wheels
18. 2 ...................................................................................Feet