C 1, SB 740-97-38
APPENDIX III-I
ITEM DEFECTS FOR DITCHING MACHINES
Classification
Item
Defect
Major
Minor
AB
EXTERIOR SURFACES AND
HOUSIENGS:
General
Fractures; base mounting and / or fastening devices broken or missing............. X
Dents ..................................................................................................................
X
Painted surfaces
Stage III corrosion; chipped or abraded .............................................................. X
Stage II corrosion ................................................................................................
X
Unpainted noncritical
surfaces
Stage IV corrosion............................................................................................... X
Stage III corrosion ..............................................................................................
X
Stage II corrosion ................................................................................................
X
CHASSIS:
Frame
Cracked or broken welds; stage IV corrosion...................................................... X
Stage III corrosion ...............................................................................................
X
Stage II corrosion ................................................................................................
X
Tires
Checks and cracks extending to the cord; cut or punctured;
bulges indicating ply separation; chunking of rubber........................................... X
Wheels
Distorted; broken; stage IV corrosion .................................................................. X
Stage III corrosion ...............................................................................................
X
Stage II corrosion ................................................................................................
X
Tracks
Stage IV corrosion............................................................................................... X
Stage III corrosion ...............................................................................................
X
Stage II corrosion ................................................................................................
X
BOOM ASSEMBLY:
Frame
Stage IV corrosion; broken welds or beams........................................................ X
Stage III corrosion ...............................................................................................
X
Sheaves
Stage IV corrosion; cracked, broken or frozen .................................................... X
Stage III corrosion ...............................................................................................
X
Buckets
Stage I V corrosion; broken welds or chipped teeth; adjusting
screws or pins frozen.......................................................................................... X
Stage III corrosion ...............................................................................................
X
Wire Rope
Stage IV corrosion; broken strands..................................................................... X
Stage III corrosion ...............................................................................................
X
Stage II corrosion ................................................................................................
X
CONVEYOR ASSEMBLY:
Frame
Stage IV corrosion; broken welds or frame; adjusting screws,
pulleys or rollers frozen ....................................................................................... X
Stage III corrosion ...............................................................................................
X
Conveyor Belt
Checking; cracking; broken reinforcing; frayed; cut; loss of flexibility
and resiliency; fungus growth.............................................................................. X
STEERING SYSTEM:
Actuating cylinders
Stage IV corrosion; shaft bent or distorted; seals leaking.................................... X
Stage III corrosion on shafts ...............................................................................
X
Stage III corrosion on shafts ...............................................................................
X
Linkage
Stage IV corrosion; bent or distorted................................................................... X
Stage III corrosion; frozen ...................................................................................
X
Stage II corrosion ................................................................................................
X
Gear case
Stage IV corrosion on internal surfaces; deteriorated seals; leaks ...................... X
Stage III corrosion on internal surfaces...............................................................
X
Stage II corrosion on internal surfaces................................................................
X
Fluid reservoir
Stage III corrosion on internal surfaces; stage IV corrosion on
external surfaces: leaks...................................................................................... X
Stage II corrosion on internal surfaces; fluid contaminated.................................
X
III-I-1