AD9 heater
 

AD9 heater

Started by chessie4905, February 04, 2018, 04:59:43 AM

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chessie4905

Are the heaters marked somewhere as to voltage. I don't see anything. New unit I'm going to install on coach.
GMC h8h 649#028 (4905)
Pennsylvania-central

luvrbus

I never saw the voltage on 1 just check the numbers the 109578 is 12V and 109496 is 24V for the heater
Life is short drink the good wine first

chessie4905

GMC h8h 649#028 (4905)
Pennsylvania-central

dtcerrato

Is there a spin on air dryer with heater suitable for a GM PD4104?
Dan & Sandy
North Central Florida
PD4104-129 since 1979
Toads: 2009 Jeep GC Limited 4X4 5.7L Hemi
             2008 GMC Envoy SLT 4x4 4.2L IL Vortec

chessie4905

On our former 4104,we installed an AD9 in area right behind left rear wheels. Carefully cut and hinged lower body panel to access it.
GMC h8h 649#028 (4905)
Pennsylvania-central

Dave5Cs

What I did was put the model number into the web browser into the bendix site and up came my model that someone gave me. But i didn't know which one it was 12 or 24 and I needed 24. It was 24 volt.
"Perfect Frequency"1979 MCI MC5Cs 6V-71,644MT Allison.
2001 Jeep Cherokee Sport 60th Anniversary edition.
1998 Jeep TJ ,(Gone)
Somewhere in the USA fulltiming.

chessie4905

I need 24volt. Mine is 12 volt. Thought there might be a number actually stamped on heater to verify.
GMC h8h 649#028 (4905)
Pennsylvania-central

Dave5Cs

only number is for the whole bottom plate which normally will have the heater in it.

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"Perfect Frequency"1979 MCI MC5Cs 6V-71,644MT Allison.
2001 Jeep Cherokee Sport 60th Anniversary edition.
1998 Jeep TJ ,(Gone)
Somewhere in the USA fulltiming.

chessie4905

Got the 24 volt heater. Turns out, Bendix color codes the voltage of the heaters. The 12 Volt attachment flange is white, while the 24 volt flange is grey. They note a difference in color in the instructions, but not what the color is.
GMC h8h 649#028 (4905)
Pennsylvania-central