GF28.55-P-3000VG Transfer Case Oil Supply, Function

GF28.55-P-3000VG Transfer case oil supply, function
- with engine 156, 272, 273, 642 [model 164.1]
- with engine 273, 642 [model 164.8]
- Transmission 722.9

Component Identification:

Function requirements for transfer case oil supply, general
^ The engine turns

Transfer case oil supply, general
The oil supply system ensures that the transfer case components are supplied with sufficient oil.

Transfer case oil supply, function sequence
The rotor-type oil pump (3) supplies the following rotating components with lubricating oil via cross-bores in the input shaft (1):
- Central differential module
- Clutch pack
- Planetary gear set
- Input shaft mounting (2)

The rotor-type oil pump (3) is located in the front of the transfer case's transmission housing and at a high rate of flow it can generate high oil pressures.

The output shaft bearing (6), v on the front axle output flange (5) and chain (4) are supplied with sufficient oil by running through the oil sump. Metal abrasion and shavings are collected by a magnet (7) integrated into the rear transmission housing (8).

Rear axle oil supply

The oil is fed to the rear axle by an oil sump lubrication system.