To lessen any possibility of exhaust fumes working up into the body, long muffler pipes in- stead of short pipes are now used under the majority of “AA” commercial types. Fig. 1157 shows the different muffler pipe assemblies and attaching parts used oh all truck chassis. Adapter AA-5257-B is now used with the A-5256-C bracket …
A new long muffler tail pipe has been released for use with the 79-B panel delivery, the 150-B station wagon and the 225-A special delivery. This new tail pipe carries the exhaust fumes still further back from the end of the body. The new pipe can be easily installed on old jobs by replacing the …
All new truck frames now have a muffler pipe bracket adapter AA-5257 riveted to the side member. This adapter permits using the Model A muffler bracket A-5256-C on the truck. It also provides additional clearance between muffler and service brake cross shaft. This change obsoletes the old design AA- 5256-BR bracket, as they cannot be …
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