Powertrain System Troubleshooting.

M2/M3 Bradley Fighting Vehicle: Troubleshooting
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SSG Taylor checks and finds that air is being drawn in through each of the

firing port vent fan flex hoses and is being exhausted through the firing

port exhaust ducts, so the answer to the question is "yes." He would then

follow the yes arrow to the next block of instructions.

Here, SSG Taylor is directed to place the GUN PORT VENT FAN switches to the

OFF position, and to push the firing port vent levers down to the closed

position. Once this is done, SSG Taylor places the MASTER POWER switch to

the OFF position and raises the ramp. The final statement in this box is NO

FAULTS FOUND.

This means that SSG Taylor performed the troubleshooting

procedures and could find nothing wrong. However, to verify this, he must

go back to the beginning of the troubleshooting procedures and repeat each

step to ensure that the malfunction has been corrected and that there is

nothing else wrong.

(2) Powertrain System Troubleshooting.

In the next paragraphs, SSG

Taylor is going to troubleshoot the power train system following the

pathways that lead to the conclusion that the engine oil pressure is low.

Again, remember, we are following only one of many troubleshooting pathways

that may be encountered.

In this situation, an M2/M3 arrives at the shop accompanied by a DA Form

2404 stating that the vehicle's engine oil pressure light is on, indicating

that the oil pressure is low. The crew has performed their portion of the

troubleshooting procedures which mainly consist of checking the level of the

engine oil, that was found to be within the limits prescribed on page 3-98

of TM 9-23520-252-10-1. After reading the DA Form 2404 and talking with the

crew, SSG Taylor locates the troubleshooting procedures in the TM.

After finding the troubleshooting procedures, he checks to see what tools

and equipment will be needed.

For this particular procedure, SSG Taylor

will need the general mechanic's automotive tool kit, STE-M1/FVS (VTM only),

and a helper. The vehicle should be parked with the engine stopped and the

FIRE SUPPRESSION switch in the MANUAL