C 4, SB 740-97-38
Classification
Item
Defect
Major
Minor
A
B
Stage III corrosion...............................................................................................
x
HOPPERS, SPOUTS, AND CHUTES:
Stage IV corrosion on interior surfaces...............................................................x
Stage III corrosion on interior surfaces ...............................................................
x
SCREENS:
Stage IV corrosion; bent, torn, or punctured .......................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
FEEDER GATE ASSEMBLY:
Adjusting screws
Stage IV corrosion; damaged threads.................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
Shafts
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
Gates
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
Handles
Stage IV corrosion; bent or broken......................................................................x
Stage III corrosion...............................................................................................
x
Universal joints
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
Inch scale
Stage IV corrosion; pointers bent or broken........................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
FLOW SELECTOR:
Stage IV corrosion on interior surfaces...............................................................x
Stage III corrosion on interior surfaces ...............................................................
x
REVOLUTION COUNTER ASSEMBLY:
Dial
Stage IV corrosion; pointer broken......................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
Counter
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
RUBBER FLASHINGS:
Checking or cracking; frayed or cut; loss of
flexibility and resiliency; fungus growth.........................................................x
BIN LEVEL TELLTALES:
Stage IV corrosion on arms, rods, wings, and
supports........................................................................................................x
Stage III corrosion on arms, rods, wings, and
supports........................................................................................................
x
Stage II corrosion on arms, rods, wings, and
supports........................................................................................................
x
FEEDER ASSEMBLIES:
Frames
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
Pans
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
Chains
Stage IV corrosion; pins and/or rollers frozen;
cracked or broken links.................................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
Sprockets and idlers
Stage IV corrosion on machined surfaces; cracked
or broken teeth..............................................................................................x
Stage III corrosion on machined surfaces...........................................................
x
Stage II corrosion on machines surfaces............................................................
x
Clutch
Stage IV corrosion on collar, shaft, or yoke.........................................................x
Stage III corrosion on collar, shaft, or yoke .........................................................
x
Stage II corrosion on collar, shaft, or yoke ..........................................................
x
Hubs and shafts
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
Stage IV corrosion ..............................................................................................x
Stage III corrosion...............................................................................................
x
Stage II corrosion................................................................................................
x
SCREEN DRIVE ASSEMBLY:
Housing
Stage IV co rosion on interior surfaces ...............................................................x
Stage III corrosion on interior surfaces ...............................................................
x
Stage II corrosion on interior surfaces ................................................................
x
III-KK-1
