MAINTENANCE OF M939 SERIES VEHICLES - OD1661 - LESSON 1/TASK 2
electrical. The mechanical troubleshooting symptom index is found in
Chapter 2, Table 2-2 of TM 9-2320-272-20-1.
The following M939 FOV
functional systems are designated as mechanical in the table:
Ether Start System
Wheels and Tires
Frame and Brackets
Springs and Shock Absorbers
Instruments and Gages
The troubleshooting symptom index is found in Chapter 2, Table 2-3 of
the same TM.
The following functional systems are designated as
electrical in the table:
Directional Signal System
Indicator, Gage, and Warning System
Trailer Connection System
Tables 2-2 and 2-3 are the master reference tables for locating
troubleshooting information within a functional system.
segment each functional system into malfunction symptoms.
malfunction symptom given for an individual component or system is
followed by step(s) that should be taken to determine the cause and
corrective action that must be taken to remedy the problem.
example is shown in Table 1 (on the following page).