Preparing to Troubleshoot.

on the M2/M3 BFV, the procedures for replacing faulty components will

not be covered here. The procedures for replacing faulty components

were previously covered in paragraph 4 on page 5 in lesson 1.

When following the troubleshooting pathways in this subcourse, it is

important to remember that the test results described are not the

only possible results. The pathways are being used as examples only.

Throughout the troubleshooting pathways, we are going to use a

fictitious character.

The text will be presented as though we are

watching over his shoulder as he performs the troubleshooting

procedures.

It is essential to have the technical manual (TM)

present and to respond to the specific test results obtained

according to the directions in the TM if actual troubleshooting

procedures are to be performed on the vehicle. Also, this subcourse

assumes that whenever a test is performed, the test equipment or

multimeter has been properly set up for the test being described.

a.

Preparing to Troubleshoot.

Before beginning a troubleshooting

task, it is important to have on hand the tools and parts required

and to make sure the vehicle is properly set up for the task at hand.

For this troubleshooting task, the vehicle engine should be stopped,

the FIRE SUPPRESSION switch should be in the MANUAL position, the

ramp should be down and the turret should be shut down. The general

mechanic's tool kit, multimeter, electrical connector pliers, probe

assembly, and the STE-M1/FVS vehicle test meter (VTM only) will be

needed for this task.

When actually performing the step-by-step

procedures on the vehicle, a helper may be needed, depending on the

test results obtained.

b.

Pathway One.

One afternoon SGT E. Haskell is assigned to

troubleshoot the malfunction TURRET BACKUP PANEL ANNUNCIATOR LIGHT

FAILS TO OPERATE.

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