Materials handling vehicle having substantially all hydraulic components mounted on a main frame assembly

A lift truck comprising:

• a power unit assembly comprising a power unit base having front and rear portions, at least one wheel, at least one traction motor for driving said at least one wheel, a battery for providing power to said at least one traction motor, and at least one traction motor control module for controlling the operation of said at least one traction motor, said at least one wheel, at least one traction motor and at least one traction motor control module being mounted in said rear portion of said power unit base;
• a main frame assembly comprising a main frame base having front and rear portions, a mast assembly, a carriage assembly coupled to said mast assembly, and hydraulic drive apparatus coupled to said mast assembly, said front portion of said power unit base being coupled to said rear portion of said main frame base;
• and
• wherein said power unit assembly further comprises a hydraulic drive apparatus control module mounted in said rear portion of said power unit base for controlling the operation of said hydraulic drive apparatus.

A lift truck comprising:

• a power unit assembly comprising a power unit base, at least one wheel coupled to said base, and a system for driving said at least one wheel;
• a main frame assembly detachably connected to said power unit assembly, said main frame assembly comprising a main frame base, a mast assembly coupled to said main frame base, a carriage assembly coupled to said mast assembly, and a hydraulic drive apparatus, wherein substantially the entirety of said hydraulic drive apparatus is provided on said main frame assembly;
• and
• a control structure controlling the operation of said hydraulic drive apparatus.