MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
This Maintenance Allocation Chart (MAC) provides a summary of maintenance operations for the line printer. This
document assigns categories of maintenance for specific maintenance functions on repairable items and identifies tools
and equipment required to perform each function. Each maintenance function is assigned to the lowest level of
maintenance prepared to perform that function for the line printer. It should be understood that each maintenance
function can also be performed at all higher levels of maintenance. The higher levels of maintenance will have tools and
test equipment to perform the maintenance functions assigned to and normally performed by lower levels of
The following paragraphs of section I present maintenance function definitions, explanation of MAC column entries, and
explanation of column entries of the tool and test equipment requirements section. Section II presents the MAC for the
line printer and section III presents the tool and test equipment requirements for the line printer.
B-2. MAINTENANCE FUNCTION DEFINITIONS.
Maintenance Functions are limited to and defined as follows:
a. Inspect. Determination of the serviceability of an item by comparing its physical, mechanical, and/or
electrical characteristics with established standards through examination.
b. Test. Verification of serviceability and detection of beginning failure by measuring the mechanical or
electrical characteristics of an item and comparing those characteristics with prescribed standards.
c. Service. Performance of operations required periodically to keep an item in proper operating condition.
Such operations would include cleaning, preservation, draining, painting, or replenishment of fuel/lubricants/hydraulic
fluids or compressed air supplies.
d. Adjust. Maintenance within prescribed limits by bringing into proper or exact position, or by setting the
operating characteristics to the specified parameters.
Aline. Adjustment of specified variable elements of an item to the maximum or desired performance.
Calibrate. Determination and cause corrections to or adjustments to instruments or test measuring and
diagnostic equipment used in precision measurement. Consists of comparing two instruments, one a certified standard
of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument being compared.