M50A3 water tanker

[cranetruck]

I'm curious about the "A3" on this tag. This tag was removed from a parts truck in Oklahoma. It was going to the scrapper, so I was able to remove some items.
I had the understanding that the extended service program deuces only had the A3 part number. Rebuilt with super singles, Cat engines etc.
Any comments?

 

[BFR]

my deuce is a 66 m185A3 (electrical shop van w/ c turbo )

 

[mangus580]

Not true on the extended service. Was common to see M109A3's (have one in my driveway)

 

[Recovry4x4]

A2 and A3 water truck had different size tank compartments. The A-2 has a 400 and a 600 gallon chamber. The -A3 has 2 500 gallon chambers.

 

[cranetruck]

Thanks! Learned something again...

 

[DDoyle]

As others have indicated, the "A" suffixes were model specific, not uniform across the chassis series. The tallest I recall seeing on a G742 series truck is an A5 suffix found on some versions of the expansible van.

Best wishes,
David Doyle