Offset transfer case pump with lubrication distribution system

A transfer case lubrication system comprising:

• a mainshaft transmitting torque through a driveline;
• an offset pump having a pumpshaft with an axis positioned offset relative to a rotational axis of the mainshaft, wherein the offset pump draws lubricating fluid from a sump defined in the transfer case and provides pressurized fluid to the mainshaft;
• a manifold block fixed to a rear housing of the transfer case, wherein the manifold block includes a plurality of passageways therethrough;
• wherein the offset pump is driven by a geartrain transferring power from the mainshaft;
• wherein the offset pump includes a suction port coupled to the manifold block and a delivery port coupled to the manifold block, wherein the offset pump draws lubrication fluid from the sump via the manifold block, pressurizes the lubrication fluid, and delivers pressurized fluid to via the plurality of passageways of the manifold block to an oil distribution device that surrounds the mainshaft and supplies the pressurized lubrication fluid to the mainshaft;
• wherein the manifold block includes an inlet port attached to a suction tube extending into the sump, the manifold block includes an outlet port that is fluidly and sealing connected to an inlet tube of the oil distribution device;
• wherein the outlet port of the manifold block and the inlet tube of the oil distribution device provides an anti-rotation feature for the oil distribution device in response to drag caused by rotation of the mainshaft relative to the oil distribution device.

A transfer case lubrication system comprising:

• a mainshaft transmitting torque through a driveline;
• a lubricating pump having a pumpshaft having an axis positioned offset relative to a rotational axis of the mainshaft to define an offset lubricating pump;
• wherein the offset lubricating pump is driven by a geartrain transferring power from the mainshaft;
• wherein the offset lubricating pump delivers pressurized lubrication fluid from a sump defined within the transfer case to the mainshaft, the pressurized lubrication fluid delivered via a plurality of passageways coupled to an oil distribution device that supplies the pressurized lubrication fluid to the mainshaft;
• wherein the mainshaft includes a drive gear and the lubricating pump includes a driven gear attached to the pumpshaft;
• wherein the oil distribution device surrounds the mainshaft and is disposed axially forward relative to the drive gear, and the pump is disposed axially rearward from the driven gear.