OTR AC Electrical

[garhawk]

The OTR AC worked well, both passenger and driver blowers, as well as the compressor clutch and condenser fans(s).  Notice the past tense - worked one night, the next morning, NO!

The bus is a model 20 Eagle with, what I believe to be, the original AC compressor, wiring and, generally, all the AC systems.

Questions:

a)  Are the passenger and driver blowers all 12V?
b)  Are the condenser fan(s) 24V?
c)  Is the 24V alternator dedicated to the OTR AC system?
d)  If so, does the 24V alternator service the AC system directly, without the use of batteries?
e)  Is there any other 24V DC system or usage in an original Model 20?

This bus is equipped with both a 12V and 24V alternator - is that standard for the model? 

The 24V alternator is a Leece NeVille model #8RL 3013.  The "R" connector is unused.  One large cable (#6) goes directly to ground.  One large cable (#6) goes to condenser housing cabinet.  (Assume it supplies current for fans)  One #10 wire goes to solenoid, then to compressor clutch.

No voltage can be detected from any terminal on the 24V alternator, either when at rest or running.  Would seem to be bad alternator, don't you think?

Final Question!  Is it unusual, silly or, illegal to use the output of a 24V alternator without the assistance of a buffering device such as a battery bank?

[luvrbus]

The 24V on a NJT model 20 is for the AC only if the unit is in the rear mounted in the back cap that is original the rest of the bus is 12 V never saw a 24V battery bank on one but never looked close but there wasn't a high 12V load they had a air starter.
The regular model 20 was 12V for everything Jersey Eagles are a different animal  

good luck