Only if it is below the micro purchase threshold for services which is $2,500
You did not say what type of maintenance services, but we answer many, many questions of a similar nature here at AAP, if you use this site's search capability it would not surprise me if you find a previous answer that also discusses the type of maintenance you need.
the DEPARTMENT OF DEFENSE GOVERNMENT CHARGE CARD GUIDEBOOK FOR ESTABLISHING AND MANAGING PURCHASE, TRAVEL, AND FUEL CARD PROGRAMS
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