Extension Housing: Service and Repair

On 4WD models it may be necessary to remove transfer case.
On some models, it is necessary to unload both torsion bars and drop one side of torsion bar crossmember to provide clearance for extension housing removal.
1. Raise and support vehicle, mark components for reassembly and remove propeller shaft.
2. Remove speedometer pinion and adapter assembly, then drain approximately two quarts of transmission fluid from transmission.
3. Remove extension housing to crossmember bolts, then raise transmission with a jack and remove crossmember.
4. Remove extension housing to transmission bolts. On console shift models, remove torque shaft lower bracket to extension housing bolts. In the following step, gearshift must be in Low, to position parking lock control rod rearward so it can be disengaged or engaged with parking lock sprag.
5. Remove two screws, plate and gasket from bottom of extension housing mounting pad, then spread snap ring from output shaft bearing and carefully tap extension housing off output shaft bearing.
6. Slide extension housing off shaft to remove parking sprag and spring, then remove snap ring and slide reaction plug and pin assembly out of housing.