Mall 125 Drill

[Model 12]

Mall 125 is all aluminum 1/2" drill from early 50s. Unbelievably, it came with a Jacobs Multi Chuck. I can remedy that. But I am not sure about what's in the Gear Case. I'd like to know cause there's a few of em I can get my hands on.
Does anyone know if this has an Intermediate Gear along with the Spindle Gear?
I was able to capture a print of this crude picture of the schematics. It shows a lone gear apart from things. I half assume that it could be the Intermediate Gear, otherwise obscured in the main diagram. It sure is beyond my abilities here. I hope someone more learned can help me here.
I can swap out the chuck but I can't do anything if it just has one gear.

[Bill Houghton]

How easy is it to take apart.  Most of those drills were pretty simple to disassemble.  You'd want to grease the gears and bearings anyway.

At a rated 500 rpm (see http://vintagemachinery.org/pubs/1183/25637.pdf), I would expect an intermediate gear train to reduce motor speed to output speed.

[Model 12]

Bill, You replied right as I was modifying things to include this bad copy of schematics. But you're exactly right without it seeing it. If it's low speed; 500, it would have to rely on an Intermediate Gear. Thank you[ And thanks for that catalog.