FUNCTIONAL GROUPS. - TM-55-1740-203-13-P0133

TM 55-1740-203-13&P

Overhaul.

T o restore an item to a completely serviceable condition as

prescribed by maintenance serviceability standards prepared and pub-

lished for the specific item to be overhauled.

B-3.

DEFINITIONS

Continued.

Rebuild.

T o restore an item to a standard as nearly as possible to

t h e original or new condition in appearance, performance, and life

T h i s is accomplished through the maintenance technique

expectancy.

o f complete disassembly of the item, i n s p e c t i o n of all parts or compo-

n e n t s , r e p a i r or replacement of worn or unserviceable elements (items)

u s i n g original manufacturing tolerances and specifications, and sub-

sequent reassembly of the item.

B - 4 . FUNCTIONAL GROUPS.

Standard functional groupings are not considered feasible for aviation ground

Therefore, variations to

support equipment due to variation and complexity.

functional groupings may occur.

B - 5 . MAINTENANCE CATEGORIES AND WORK TIMES.

The maintenance categories (levels AVUM, AVIM, and DEPOT are listed on the

Maintenance Allocation Chart with individual columns that indicate the work

times for maintenance functions at each maintenance level.

Work time presen-

t a t i o n s such as 0.1 indicate the average time it requires a maintenance level to

If a work time has not been estab-

perform a specified maintenance function.

lished, the columnar presentation shall indicate `t-" -T?.

higher than the level of maintenance indicated are authorized to perform the

indicated function.

B-6. TOOLS AND TEST EQUIPMENT (Section Ill).

Common tools sets (not individual tools) special tools, test and support equip-

m e n t required to perform maintenance functions are listed alphabetically with a

reference number to permit cross-referencing to column 5 in the MAC. In

a d d i t i o n , the maintenance category authorized to use the device is listed along

w i t h the item National Stock Number (NSN) and, if applicable, the tool number

to aid in identifying the tool/device.

B-7. REMARKS (Section IV).

R e m a r k s contained in column 6, with an alphabetical code, are listed to provide

a ready reference to the definition of the remark.

Change

B-5