| All gas conducting parts |
Visual |
Dark spots (evidence of leaking gasses) |
Replace part |
Muffler |
Cylinder with baffles and two mounting brackets |
Aluminized steel |
8.5 inches diameter |
43.5 inches |
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Thin rusted areas |
Replace part |
Exhaust back pressure |
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3 psi max. allowable |
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Holes |
Replace part |
Muffler heat shield |
Double-wall |
Aluminum 0.05 inch thickness |
|
29 inches |
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|
Deep dents |
Remove dents |
Left-hand exhaust pipe |
Seamless or welded tube |
Carbon steel 0.062 inch wall |
2 - 3/8 inches O.D. |
30 inches |
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|
Constrictions |
Remove constricting matter |
Right-hand exhaust pipe |
Seamless or welded tube with heat shield |
Carbon steel 0.062 inch wall; Shield 0.063 inch steel |
2 - 3/8 inches O.D. |
31 inches |
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|
Other damage |
Replace parts with extensive damage |
Muffler Spout |
Seamless or welded tube |
Steel |
3 inches O.D. at muffler |
15 inches |
| Fasteners, brackets, and heat shields |
Visual & Manual |
Looseness and damage |
Tighten loose parts, repair or replace parts which have extensive damage |
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