Dodge Nitro. Manual — part 956

18. Remove the mode sleeve (2) from the mainshaft (1).

Fig. 21: Removing/Installing Mode Hub Snap Ring
Courtesy of CHRYSLER LLC

19. Remove the mode hub snap ring (1) from the mainshaft (3).

2 - MODE SLEEVE

1 - MODE HUB SNAP RING
2 - MODE HUB
3 - MAINSHAFT

2007 Dodge Nitro R/T

2007 TRANSFER CASE MP143 - Service Information - Nitro

Fig. 22: Removing/Installing Mode Hub
Courtesy of CHRYSLER LLC

20. Remove the mode hub (1) from the mainshaft (2).

Fig. 23: Removing Screws Holding Both Chain Guide Rails To Front Case
Courtesy of CHRYSLER LLC

1 - MODE HUB
2 - MAINSHAFT

1 - SCREWS

2007 Dodge Nitro R/T

2007 TRANSFER CASE MP143 - Service Information - Nitro

21. Remove the screws (1) holding both chain guide rails to the front case (2).

Fig. 24: Removing Both Chain Guide Rails From Transfer Case
Courtesy of CHRYSLER LLC

22. Remove both chain guide rails (1) from the transfer case.

23. Remove the magnet from the magnet pocket.

Fig. 25: Removing Front Output Shaft Assembly From Front Case And Front Output Shaft Front
Bearing
Courtesy of CHRYSLER LLC

2 - FRONT CASE

1 - DRIVE CHAIN GUIDE

1 - FRONT HOUSING

2007 Dodge Nitro R/T

2007 TRANSFER CASE MP143 - Service Information - Nitro

24. Remove the front output shaft assembly (2) from the front case (1) and the front output shaft front

bearing.

25. Remove the front output shaft seal with a suitable pry tool or a screw mounted in a slide hammer.

26. Remove the input shaft seal with a suitable pry tool or a screw mounted in a slide hammer.

CLEANING

CLEANING-TRANSFER CASE MP143

The use of crocus cloth is permissible where necessary, providing it is used carefully. When used on shafts, or
valves, use extreme care to avoid rounding off sharp edges. Sharp edges are vital as they prevent foreign matter
from getting between the valve and valve bore.

Do not reuse oil seals, gaskets, seal rings, or O-rings during overhaul. Replace these parts as a matter of course.
Also do not reuse snap rings or E-clips that are bent or distorted. Replace these parts as well.

Lubricate transfer case parts with Mopar® ATF+4 ATF, Automatic Transmission Fluid, during overhaul and
assembly. Use petroleum jelly to prelubricate seals, O-rings, and thrust washers. Petroleum jelly can also be
used to hold parts in place during reassembly.

Clean the case in a solvent tank. Flush the case bores and fluid passages thoroughly with solvent. Dry the case
and all fluid passages with compressed air. Be sure all solvent is removed from the case and that all fluid
passages are clear.

INSPECTION

INSPECTION-TRANSFER CASE MP143

Inspect the case for cracks, porous spots, worn bores, or damaged threads. Damaged threads can be repaired
with Helicoil® thread inserts. However, the case will have to be replaced if it exhibits any type of damage or
wear.

ASSEMBLY

TRANSFER CASE - MP143

2 - FRONT OUTPUT SHAFT

NOTE:

Do not use shop towels or rags to dry the case (or any other transmission
component) unless they are made from lint-free materials. Lint will stick to case
surfaces and transmission components and circulate throughout the
transmission after assembly. A sufficient quantity of lint can block fluid
passages and interfere with valve body operation.

2007 Dodge Nitro R/T

2007 TRANSFER CASE MP143 - Service Information - Nitro