C4, SB 740-97-38
Classification
Item
Defect
Major
Minor
A
B
Stage II corrosion on internal surfaces;
contaminated lubricant..................................................................................
x
Drive chain
Stage III corrosion; cracked or broken links ........................................................x
Stage II corrosion; pins and/or rollers frozen.......................................................
x
W orm screw and housing
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
EXHAUST FAN ASSEMBLY:
Bearing cooling fan
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
Exhaust fan housing
Stage IV corrosion on interior surfaces...............................................................x
Stage III corrosion on interior surfaces ...............................................................
x
Fan wheel Stage IV corrosion
x
Stage III corrosion...............................................................................................
x
EXHAUST STACK, TRANSITION,
AND ASSEMBLY HARDWARE:
Stage IV corrosion on bolts, nuts, washers, and
interior surfaces of stack or transition...........................................................x
Stage III corrosion on bolts, nuts, washers, and
interior surfaces of stack or transition...........................................................
x
LOW PRESSURE AIR BLOWER:
Blower fan housing
Stage IV corrosion on interior surfaces...............................................................x
Stage III corrosion on interior surfaces ...............................................................
x
Fan wheel Stage IV corrosion
x
Stage III corrosion...............................................................................................
x
Air piping
Stage IV corrosion on drawbands, bolts, nuts,
washers, and interior surfaces of piping; deteriorated
or distorted gaskets or rubber connectors ....................................................x
Stage III corrosion on drawbands, bolts, nuts,
washers, and interior surfaces of piping .......................................................
x
BASIC ISSUE ITEMS (BII):
Missing ...............................................................................................................x
Deteriorated or damaged.....................................................................................
x
COMPONENTS AND ACCESSORIES:
Missing; incomplete ............................................................................................x
Deteriorated or damaged.....................................................................................
x
LIFTING AND/OR TIE
DOWN DEVICES:
Cracked, broken, or distorted..............................................................................
x
WARNING OR CAUTION
PLATES:
Illegible; missing .................................................................................................x
MODIFICATION WORK ORDERR
(MWO):
Urgent classification
Not applied..........................................................................................................x
Routine classification
Not applied..........................................................................................................
x
EQUIPMENT LOG BOOK
(TM 38-750):
Missing ...............................................................................................................x
Incomplete ..........................................................................................................
x
DATA PLATES:
Illegible or missing ..............................................................................................
x
DEPRESERVATION GUIDE
(DA FORM 2258):
Illegible or missing ..............................................................................................
x
III-CC-3
