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TM 55-8145-221-14&P
REFRIGERATED CONTAINER SYSTEM
MAINTENANCE ALLOCATION CHART – Continued
0048 00
6. Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or test, measuring,
and diagnostic equipment used in precision measurement. Consists or comparisons of two instruments, one of
which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the
instrument being compared.
7
Remove / Install. To remove and install the same item when required to perform service or other maintenance
functions. Install may be the act of placing, seating, or fixing into position a spare, repair part, or module
(component or assembly) in a manner to allow the proper functioning of an equipment or system.
8. Replace. To remove an unserviceable item and install a serviceable counterpart in its place. "Replace" is
authorized by the MAC and assigned maintenance level is shown as the third position code of the Source,
Maintenance and Recoverability (SMR) code.
9. Repair. The application of maintenance services, including fault location/troubleshooting, removal/installation,
and disassembly/assembly procedures, and maintenance actions to identify troubles, and restore serviceability to
an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module (component or
assembly) end item, or system.
NOTE
The following definitions are applicable to the “repair” maintenance function:
Services – Inspect, test, service, adjust, align, calibrate, and/or replace.
Fault location/troubleshooting – The process of investigating and detecting the cause of
equipment malfunctioning; the act of isolating a fault within a system or Unit Under
Test (ET).
Disassembly/assembly – The step-by-step breakdown (taking apart) of a spare/
functional group coded item to the level of its least component, that is assigned an
SMR code for the level of maintenance under consideration (i.e., identified as
maintenance significant).
Actions – Welding, grinding, riveting, straightening, facing, machining, and/or
resurfacing.
10. Overhaul. That maintenance effort (service/action) prescribed to restore an item to a completely serviceable/
operational condition as required by maintenance standards in appropriate technical publications. Overhaul is
normally the highest degree of maintenance performed by the Army. Overhaul does not normally return an item
to like new condition.
11. Rebuild. Consists of those services/actions necessary for the restoration of unserviceable equipment to a like new
condition in accordance with original manufacturing standards. Rebuild is the highest degree of material
maintenance applied to Army equipment. The rebuild operation includes the act of returning to zero those age
measurements (e.g., hours/miles) considered in classifying Army equipment/components.
Change 1
0048 00-2
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