Transfer Case: Service and Repair

Power transfer overview, all wheel drive





A - Clutch A
B - Clutch B
E - Clutch E
F - Clutch F
C - Brake C
D - Brake D
G - Brake G
F1 Freewheel
1. Engine
2. Torque converter with lock-up clutch
Arrows point in direction of travel
3. Front differential
4. Automatic transmission
5. Front final drive
6. Front drive pinion
7. Torsen differential
8. Output shaft
9. Driveshaft
10. Rear drive pinion
11. Rear differential
12. Rear final drive
Arrows point in direction of travel
Z1, Z2 and Z3 = Front intermediate drive gears; ratios
Z1, Z2 and Z3 = Rear intermediate drive gears; ratios
Arrows point in direction of travel

Type E17 hydraulic control, position of selector elements





Position of Selector Elements (part 1 of 2)





Position of Selector Elements (part 2 of 2)

- If complaints are made about poor acceleration and speed performance or about the drive in general, the following table can be used to determine which selector elements operate in which gears. Using a process of elimination, faulty selector elements can be therefore be identified.
x = Component is actuated
- = Component is not actuated
(x) = Component is actuated according to situation (driving condition)

Type E18/2 hydraulic control, position of selector elements





Position of Selector Elements (part 1 of 2)





Position of Selector Elements (part 2 of 2)

- If complaints are made about poor acceleration and speed performance or about the drive in general, the following table can be used to determine which selector elements operate in which gears. Using a process of elimination, faulty selector elements can be therefore be identified.
x = Component is actuated
- = Component is not actuated
(x) = Component is actuated according to situation (driving condition)