C 4, SB 740-97-38
APPENDIX III-W
ITEM DEFECTS FOR HEATER, HOT OIL,
SEMITRAILER MOUNTED
Classification
Item
Defect
Major
Minor
A
B
EXTERIOR SURFACES AND
HOUSINGS:
General
Fractures; base mounting and/or fastening devices broken or missing
x
Dents
............................................................................................................. x
Painted surfaces
Stage III corrosion; chipped or abraded ................................................
x
............................................................................................................. x
Stage II corrosion
Unpainted noncritical surfaces
Stage IV corrosion....................................................................................
x
Stage III corrosion
............................................................................................................. x
Stage II corrosion
.............................................................................................................
x
CHASSIS:
Frame and springs
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
Axles and bearings
Stage IV corrosion on wheel bearings and machined surfaces of
axles; deteriorated gaskets or seals
x
Stage III corrosion on wheel bearings and machined surfaces of axles ..........................................................
x
Stage II corrosion on wheel bearings and machined surfaces of axles ...........................................................
.
.x
Support legs
Stage IV corrosion; bent, cracked or broken; frozen ..........................
x
Stage III corrosion
............................................................................................................. x
BRAKE ASSEMBLY:
Drum and/or shoes
Stage IV corrosion....................................................................................
x
Stage III corrosion
............................................................................................................. x
Stage II corrosion
.............................................................................................................
x
Springs, anchors, cable, yokes
and/or linkage
Stage IV corrosion; distorted or broken ................................................
x
Stage III corrosion; frozen
............................................................................................................. x
Stage II corrosion
.............................................................................................................
x
Fluid reservoirs, wheel and
master cylinders
Stage III corrosion on internal surfaces; stage IV corrosion on external
surfaces; leaks; boots deteriorated; frozen.........................................................................................................
x
Stage III corrosion on external surfaces; stage II corrosion on
internal surfaces
............................................................................................................. x
Air reservoir
Stage III corrosion on internal surfaces; stage IV corrosion on
external surfaces
x
Stage II corrosion on internal surfaces; stage III corrosion on
external surfaces
............................................................................................................. x
Cylinder actuating rods
Stage IV corrosion....................................................................................
x
Stage III corrosion
............................................................................................................. x
Stage II corrosion
.............................................................................................................
x
Lines, hoses, and fittings
Checked; cracked; kinked:; split or cut; leaks; loss of flexibility .......
x
ELECTRICAL SYSTEM:
Wiring
Broken strands; cracked insulation; fungus growth............................
x
Frayed; checked; loss of flexibility
............................................................................................................. x
Terminals and connections
Stage III corrosion; broken terminals.....................................................
x
Stage II corrosion
............................................................................................................. x
Temperature control
Glass broken or discolored; dial face deteriorated; capillary tube
kinked, cracked or broken; inoperative ............................................................................................................. x
Switches, regulators, relays,
and controllers.
Stage III corrosion; broken; frozen ........................................................
x
Stage II corrosion
............................................................................................................. x
Control box
Bent, broken or distorted; stage IV corrosion on hinges or fasteners;
deteriorated gasket
x
Stage III corrosion on hinges or fasteners...........................................................................................................
x
Stage II co.rrosion on hinges or fasteners...........................................................................................................
x
III-W-1
