M2/M3 BFV: TROUBLESHOOTING - OD1610 - LESSON 2/TASK 1
is directed to enter 2640 on the SETCOM and continues with the test. Next
he is asked if the SETCOM displays a cable instruction message word number.
Since the display did not show a cable instruction message word number, SGT
Stryker follows the no arrow to the next box of instructions.
In the next box of instructions, he is asked if the display indicated a
fault message. Since fault number 262055 was displayed, SGT Stryker looks
up this number in the fault number message index and turns to the
appropriate page of the TM. Here, SGT Stryker finds that he is referred to
page 3-748 of the TM where he is directed to perform test number 2390
between plug 2W304P5 and plug 2W304P1. At this point, he is asked if cable
2W304 is good. Since it is, he will follow the yes arrow to the next box of
SGT Stryker is directed by this box of instructions to replace the TOW
elevation drive motor. The procedures for replacing the TOW elevation drive
motor can be found on page 18-21 of TM 9-2350-252-20-2-3.
Once the TOW
elevation drive motor has been replaced, SGT Stryker repeats the
troubleshooting procedures to ensure that the malfunction has been corrected
and that no additional malfunctions exist.
After the troubleshooting
procedures have been repeated, SGT Stryker stows all gear and completes DA
(2) WEAPONS DO NOT FIRE.
For this particular malfunction, we will
follow only those troubleshooting pathways that lead us to the conclusion
that the electronic control assembly (ECA) is defective.
This situation finds SGT Cordoba sitting in the shop when an M3 CFV returns
to the motor pool with the discrepancy WEAPONS DO NOT FIRE.
Cordoba reads the DA Form 2404 and talks with the crew.
discussion with the crew he learns that the vehicle was participating in a
nighttime live fire exercise (LFE) when the malfunction occurred. Satisfied
that a valid malfunction exists, SGT Cordoba locates the troubleshooting
procedures for this malfunction in the TM.
The first step he performs after locating the procedures is to read the
Initial Setup section.