Differential: Description and Operation

Final Drive






The 62TE's final drive system is driven by the underdrive compounder's output hub/carrier assembly. The final drive consists of the remote pinion gear, a ring gear, and a conventional differential assembly. A 23 tooth pinion gear in mesh with a 79 tooth ring gear results in a final drive ratio of 3.43:1.






1 Remote pinion gear

2 Bearing roller (cone)

3 Selectable shim

4 Bearing retainer

5 Bearing race (cup)

The 23 tooth remote pinion (1) is a helical gear driven by the output hub/carrier assembly. It is supported by a bearing retainer (4) and two tapered roller bearings, which centers the gear on its axis. The bearing preload is adjusted with a selectable shim (3) located between the outer bearing race (5) and the bearing retainer. The preload measurement and adjustment must be made with the differential assembly removed.






1 Bearing retainer

2 Selectable shim

3 Bearing roller (cup)

4 Bearing roller (cone)

5 Ring gear

6 Side gear

The differential assembly is supported by two tapered roller bearings and contained in a structural "clamshell" housing. It is a conventional, open type (non-locking) differential and is contained in a two-piece, closed case. The differential bearing preload is set with a selectable shim (2), with the pinion gear removed. The preload for the internal/spider gears is set with shims, as well. The 224 mm (8.82 in.) ring gear is bolted to the differential case.