Yet another Technic set was sacrificed... In short:
Parts from 42078 Mack Anthem were used for building from scratch another Mack truck, the Granite. It was created with using blueprints of real truck, within the given range of parts. Actually, it is a dump truck, with removable moldboard and sand spreader. It tows a quite unusal trailer, not seen on the european union roads, but used on US roads. Let's start with overall look. It was supposed to resemble these:

And now with details, what we have here: The truck is a Mack Granite, with three axle chassis and a dump body. There's no fake engine under the hood, but there are many other things packed inside.
And what is inside?
Openable doors, with cab interior and working steering wheel: Of course there's Mack the Bulddog ornament on the front: Elevation of the dump bed is operated by black bevel gear on the left side of the chassis:
Front moldboard can be elevetaed by turning black bevel gear on the right side:
Whole truck is quite modular, the dump bed is held in place by 4 technic pins, and sand spreader is held in place by two pins and axle protruding through dump bed: And as we speak about the spreader; after placing it on the back, and adding the moldboard, the truck becames a true snow plow:



The spreading disc is driven by rear axle of the truck: The trailer: It is a tow plow trailer, quite unusual piece of winter equipment: https://www.youtube.com/watch?v=lkmBP-ISzKk

Model made from bricks has the two most needed functions of the real counterpart, which are elevating of the moldboard:
And four axle steering, which also sets the whole frame at angle:


These two manage to plow a snow quite good (but it works much better with bricks) https://www.youtube.com/watch?v=NlQn5gOzQTA As usual for my C models, this one also comes with instructions.
They can be bought at Sellfy and Rebrickable: https://sellfy.com/p/VDnT/ https://rebrickable.com/mocs/MOC-22014/M_longer/42078-alternate-mack-granite-snow-plow Instructions sample:
https://bricksafe.com/files/M_longer/42078-alt/snowplow/42078 instructions sample.pdf Few pages from the instructions:



Comparison of A and C models (I do not have A model assembled):


Blueprint: Bonus round; snow, a cat, and test model, built with different colour scheme:





Meet Rudolf the Cat:
Test model, which was used to test the instructions. This colour change required swapping of few parts (7L liftarms, instead 3L and 2L on the doors for example).
I wonder if its cab could be built in orange...





Now's the time for the LKP 0403...