MS140 Transfer Case - Service Information: Overview Dodge Charger V

Scheme 22

The MS140 is an all-wheel-drive transfer case system that divides power between the front and rear differentials and transmits power to both axles at all times. Its planetary center differential (13) delivers approximately 62 percent of the engine torque to the rear axle and 38 percent to the front. (Scheme 22)

Scheme 23

The transfer case name can be decoded as follows

1. M = Magna
2. S = Steyr
3. 1 = Single speed transfer case
4. 4 = relative torque capacity
5. 0 = Full time with an open differential

The transfer case (1) has a barcode label (3) applied to the right side of the rear transfer case housing to provide important part number and build information. (Scheme 23)

OPERATION

The transfer case input shaft (1) extends through the hollow shaft (7) to drive the planetary gear system (13) housing. The housing transfers the engine torque to the outer gears, which drive the rear output shaft (15). The outer gears drive the smaller inner gears, which drive the hollow shaft (7). The hollow shaft transfers the torque to the intermediate gear (6) and then to the front output shaft (5). see scheme 3

The planetary gear system assembly contains a friction disc that is splined to the hollow shaft and applied to the planetary gear system housing to dampen vibrations in the system.

Scheme 24

Scheme 25

Scheme 26

Scheme 27

1. Raise support vehicle.
2. Disconnect the front and rear propeller shafts from the transfer case. «(Refer to DIFFERENTIAL & DRIVELINE/PROPELLER SHAFT - REMOVAL)»(ref-255930-S33460611002007060500000)
3. Support transmission (1) with jack stand.
4. Remove the bolts holding the transmission crossmember to the frame.
5. Remove the bolts (2) holding the transmission crossmember (1) to the transmission mount (3). (Scheme 24) 1 - TRANSMISSION MOUNT 2 - BOLTS
6. Remove the bolts (2) holding the transmission mount (1) to the transfer case, 5.7L engine, and remove the transmission mount. (Scheme 25) 1 - TRANSFER CASE 2 - TRANSMISSION MOUNT ASSEMBLY 3 - BOLTS
7. Remove the bolts (3) holding the transmission mount assembly (2) to the transfer case (1), 3.5L engine, and remove the transmission mount assembly. (Scheme 26) 1 - FILL PLUG 2 - INSPECTION PLUG 3 - DRAIN PLUG 4 - TRANSFER CASE
8. Remove the transfer case dampener.
9. Remove the transfer case drain plug (3) and drain transfer case lubricant. (Scheme 27)
10. Support transfer case (4) with transmission jack.
11. Secure transfer case to jack with chains.
12. Lower the transmission and transfer case slightly, to improve access to the upper transfer case to transmission fasteners.
13. Remove nuts and bolts attaching transfer case to transmission.
14. Pull transfer case and jack rearward to disengage transfer case.
15. Remove transfer case from under vehicle.