GA_Dave

I was unable to locate the production number of the above rig on any of my very incomplete Mack delivery lists. As for your latest comments/questions.... 1- Tanker capacities have varied greatly over the years. In 1948, a Tanker could have held as little as 500 gallons, compared to the typical 2000 to 3000 gallons on today's tankers. Mack, along with most builders, did not specify pumpers or tankers by their production numbers. The rig, whether it was a pumper or tanker, was all Mack-built, or it would have had a different type of designation for the production number. Mack built complete fire apparatus for many years and also sold fire apparatus chassis to other builders, but there were differences in the production numbers that show which was which. 2- I am not familiar with any Mack motor called a "CT", nor am I familiar with the "Lanova" engine. The motor used in the type 75 of the E-Series was a model ENF-510A.

Okay, I was not able to do all the research I had planned on doing, but here is what I have found so far: The apparatus was built as an E-Series (produced from 1937-1950), depicted by the single-piece windshield combined with the sloped, V-shaped grille. The other Series in production at that time included the L-Series (1940-1954), which featured a split windshield and a more vertical, more flat-faced grille. The Model 75, of the E-Series, was powered by a 150 horsepower Mack "L-Head" engine of 525 cubic inch displacement. The "S" in the production number denotes a "single reduction drive" rear axle. The Model 75 designation was specific to that engine and a 750 gallon-per-minute Hale centrifugal pump. Mack produced 393 Model 75's in the E-Series. The E-Series was available in a wide range of cab configurations, from the 2-door closed cab style above to full sedan-style 4 door cabs to open cabs, with or without doors. It was replaced in 1950 by the A-Series, which used the same windshield, but a grille more similar to the L-Series and was produced until 1956. Tomorrow, I will see about looking up that specific production number to see if I can discover the original owner.

Mack model designations are a complex mixture of letters and numbers and it takes a bit to decipher them. I will look through my collection of Mack apparatus info and get back to you tomorrow evening with the results.