TM 11-5820-489-10
TO 31R4-2GRA6-31
MAINTENANCE INSTRUCTIONS
Section I. TROUBLESHOOTING
3-1.
TROUBLESHOOTING INFORMATION
This information will be restricted to the use of operational test
If the problem cannot be solved by the operator, through Operator's
Preventive Maintenance, a higher maintenance or repair level is needed
Report any malfunctions or equipment failures on proper Form
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DA-2404 or, refer to TM 38-750.
Section Il. MAINTENANCE PROCEDURES
3-2.
INTRODUCTION
The operator of this Control Group will be required to do certain
maintenance tasks, such as inspection and service.
3-3. INSPECTION
Inspect the following switches for smooth
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mechanical action, freedom from external or
internal binding, and excessive looseness:
LOCAL switch (at both units)
REMOTE switch (at Local unit)
SELECTOR switch (at Remote unit)