M2/M3 BFV: TROUBLESHOOTING - OD1610 - LESSON 1/TASK 2
being followed. In the other test procedures that have been covered, when
you received a reading other than that which should have been displayed, you
were directed to the diagnostic troubleshooting procedures for that
particular VTM test number.
In this test procedure, however, you will
return to the troubleshooting procedures that were being followed regardless
of the result displayed on the VTM.
(b) Starter Positive Terminal Voltage. To perform this procedure,
set the vehicle up as it was for testing the starter relay coil voltage,
with the exception that now the VTM must be connected to DCA 3.
Once the VTM has been connected to DCA 3, set the TEST SELECT switches to 68
and press and release the TEST button. Now crank the engine by placing the
MASTER POWER and the ENGINE ACCESSORY switches in the ON positions.
move the gear selector lever to the START position; the engine should crank.
Remember, starter damage may occur if the gear selector lever is held in the
START position for longer than 30 seconds. Check the display.
indicate a voltage of 17 or more volts in order to pass. Regardless of the
reading received, place the gear selector lever in the NEUTRAL position, the
ENGINE ACCESSORY and the MASTER POWER switches in the OFF positions, and
return to the troubleshooting procedure that was being followed.
In the preceding paragraphs, we covered only a few of the tests that may be
performed on the BFV with the STE-M1/FVS VTM. Now that an understanding of
the troubleshooting procedures as well as the procedures for diagnosing
malfunctions has been gained, let's move on and discuss DA Form 2404.
Equipment Inspection and Maintenance Worksheet (DA Form 2404)
DA Form 2404 has five major purposes.
(1) It is a record of faults found during an inspection.
include operator and unit preventive maintenance checks and services (PMCS),
maintenance activity inspections, diagnostic checks, and spot checks.