There are three basic parts in the 7.3 starters.
- 3 Starter Motor: This is the biggest part of the 7.3 starters. When it starts, it physically spins and cranks the flywheel. Its location is in the back of the frame cross-member under the vehicle, mainly on the passenger side.
It has another part that is called the starter relay. It’s mounted in the engine compartment, on the side of the passenger fender. It provides a high volt of current flow to the starter and controls the high current supply in the starter with the help of a low current circuit.
The position of the 7.3 starter relay varies from version to version. For example, before 2002, it was bulky, had screw terminals that attached the wires and its location was inside the engine bay. But in the starter relays of 2002 to 2003, it’s more like a black fuse situated in the central junction box and the dash fuse panel.
- 3 Starter Solenoid: 7.3 starter solenoid is electrically controlled and the responsible device for activating piston. It’s the part of the 7.3 starters. It’s at the top of the assembly of a 7.3 starter motor and activates the Bendix drive.
- 3 Starter Bendix: At the bottom of the 7.3 starter engine assembly, there is the Bendix. Its sole purpose is to engage or disengage the ring gear that is attached to the flywheel or the flexplate of the engine. Bendix automatically engages or disengages the starter when the engine is powered or the combustion starts.
7.3 Powerstroke Torque: Torque is the unit to calculate the rotation of a linear force. A 7.3 Powerstroke torque may differ from brand to brand and quality. For example, the 7.3L Powerstroke from 2003 can generate a 505 and 525 torques at 1600 RPM in auto transmission and manual transmission respectively.
7.3 Powerstroke starter solenoid: 7.3 Powerstroke starter solenoid is the device that enables and activates the piston to engage or disengage. This is electrically controlled and sits At the top of the assembly.
7.3 Powerstroke weight: the Weight of a 7.3 Powerstroke is approximately 970 pounds (440 Kgs) when dry.
7.3 Powerstroke life expectancy: 7.3 Powerstroke is famous for its life expectancy among enthusiasts due to its lesser hit generation. 7.3 Powerstroke life expectancy is 400,000 to 500,000 miles if unmodified and well maintained.