Specifications

TM 9-2350-311-34-1
3-1 GENERAL TROUBLESHOOTING INSTRUCTIONS
The Quick Guide to Troubleshooting, the master reference table for locating troubleshooting solutions or references,
contains a list of various malfunctions that may occur during operation or inspection of the M109A2/M109A3/M109A4/
Ml 09A5 Howitzer and provides a solution to these problems or references troubleshooting information in the
Troubleshooting Chart or a technical manual.
Before starting troubleshooting procedures, perform basic systems tests as prescribed in TM 9-2350-311 -20-1 and
ensure electrical power is on when necessary.
WARNING
Protective radiator fan screens must be installed prior to troubleshooting in engine
compartment when engine is running or when engine is in ground hop mode. Contact
with rotating fan can cause severe injury.
3-2 QUICK GUIDE TO TROUBLESHOOTING
To use the Quick Guide to Troubleshooting and the Troubleshooting Chart, follow the instructions below:
1 Determine the problem.
2 Locate the problem in the Quick Guide to Troubleshooting.
3 Locate the solution or reference identified for the problem in the Quick Guide to Troubleshooting.
4 Recheck the system and problem.
5 Perform the corrective action as required by the troubleshooting procedure.
6 Verify that the corrective action eliminated the problem.
3-2