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NV140 Transfer Case - Service Information: Overview Jeep Commander I

Transfer Case 1 illustration ~188 words

Scheme 1

Scheme 1: TRANSFER CASE - NV140
1 - MAINSHAFT8 - FRONT OUTPUT SEAL
2 - REAR OUTPUT SEAL9 - FRONT OUTPUT SHAFT AND FLANGE
3 - SPLINE SEAL10 - FRONT CASE
4 - REAR OUTPUT FLANGE11 - INPUT GEAR
5 - REAR CASE12 - INPUT SEAL
6 - DRIVE CHAIN13 - DIFFERENTIAL
7 - FRONT DRIVE SPROCKET14 - MAINSHAFT DRIVE SPROCKET
8 - FRONT OUTPUT SHAFT SEAL

The NV140 is a single-speed transfer case and it is used in the Quadra-Trac I Full-Time 4-Wheel Drive System. It provides full-time 4-wheel drive. The transfer case operates with an open center differential dividing engine torque nearly evenly with 48 percent of engine torque to the front axle and 52 percent of engine torque to the rear axle. The Brake Traction Control System, which combines standard ABS and Traction Control, provides resistance to any wheel that is slipping to allow additional torque transfer to wheels with traction.

The Quadra-Trac I system with NV 140 single-speed transfer case provides the following benefits

  1. No shift lever or driver interaction required.
  2. Full-time four-wheel drive provides smooth operation and vehicle stability under all conditions because torque is constantly being transferred.
  3. Even torque distribution provides traction to maintain forward motion under most conditions.
  4. The Brake Traction Control System (BTCS) works in tandem with full-time four-wheel drive. BTCS provides resistance to any wheel that is slipping to allow additional torque transfer to wheels with traction.
  5. Robust design and improved sealing enhance reliability.
  6. No maintenance required.