Four Wheel Drive (4WD) Systems
WARNING: This page is about a different car, the 2009 Ford Pickup, 2009 Ford F550 Super Duty, 2009 Ford F450 Super Duty, and 2009 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The transfer case is connected to the transmission output shaft and is responsible for transmitting power through the rear drive shaft to the rear axle, and through the front drive shaft to the front axle. There are 2 types of transfer cases: mechanical shift and electronic shift.
The mechanical-shift four wheel drive (4WD) system consists of the following:
- Transfer case
- Transfer case shift lever
- Manual locking hubs (hub locks)
- 4WD indicators
- Shift linkage
The electronic-shift 4WD system consists of the following:
- Transfer case
- 4X4 control module
- Mode select switch (MSS)
- Gear motor encoder assembly
- Automatic locking hubs (hub locks)
- Pulse vacuum hub lock (PVH) solenoid and vacuum lines