1986 Mack ms series

[Hanamack]

I've recently purchased a 1986 Mack ms series and am looking to learn more about which exactly is the one I got. And some more info about the clutch and transmission.

I'll start with it has full air brake system.

Small leak in the foot air valve near front driver steer tire and little leak in rear splitter valve above and Infront of rear differential. 

Still builds 130psi while accelerating.

Anyhow it has a 10speed splitter style transmission on the 165hp motor. 

I didn't know not to push to clutch to the floor while moving and in gear and am wondering how to tell if I broke my clutch brake tabs. Is this a double wheel clutch or single?

Here are photos of the trucks engine stamp. 

The truck has a light squeal coming from clutch into transmission area and the squeal stops when I push the clutch in halfway. Is my clutch needing lubrication or adjustment for that squeal?

Thanks guys 

[Hanamack]

Here's another photo of the motor

[Joey Mack]

im very rusty, but I think you can look through the inspection hole and see if it has a clutch brake..  I wonder if it has a veleo clutch? when you look at the input shaft behind the throw out bearing you may see 2 lock ring's that have tab's instead of being 6 sided..  that is the adjusters..  yes to double clutching, although, every time I speak about double clutching, I get told that I'm not a driver...  and then the stories about how paw paw used to drive come out,,,,  at this point i loose interest...  the truck you bought is a really good truck, but the parts are hard to get.. You need to brush up on youre French....  Renault is  where the parts were made..  Have patience, and do not take too much apart until you do youre research on the parts kits...  you may have luck from our Austrailian friends on this great website..  I wonder what "Vladislav" know's about this, he is very smart... jojo