NV231HD Transfer Case
REMOVAL1. Raise vehicle.
2. Remove front propeller shaft.
Fig. 4:
3. Remove companion flange (Fig. 4).
4. Remove companion flange from output shaft. Use a suitable puller if flange can not be removed by hand.
Fig. 5:
5. Remove companion flange rubber seal from front output shaft (Fig. 5).
Fig. 6:
6. Remove seal from front case with pry tool (Fig. 6).
INSTALLATION
1. Install new front output seal in front case with Installer Tool 8143 as follows:
a. Place new seal on tool. Garter spring on seal goes toward interior of case.
Fig. 7:
b. Start seal in bore with light taps from hammer (Fig. 7). Once seal is started, continue tapping seal into bore until installer tool seats against case.
Fig. 8:
2. Install companion flange seal on front shaft (Fig. 8).
Fig. 9:
3. Install companion flange on front shaft (Fig. 9). Then install and tighten flange nut to 176 - 271 Nm (130 - 200 ft. lbs.) torque.
4. Install propeller shaft.