Alternator: Service and Repair

WM 272219 Removing and installing generator

Technical values





Preliminary work

1. Disconnect battery. -> 2706IN Work instructions after disconnecting the battery 2706IN00 Work instructions after disconnecting the battery
2. Remove drive belt. -> 137819 Removing and installing drive belt - section on "Removing" 137819 Removing and installing drive belt

Removing generator

Removing three-phase generator





Installation position of generator

1. Unscrew fastening screw -2-.





Unscrewing fastening screws of three-phase generator

2. Unscrew fastening screw -3- by three turns. The threaded bush in the linkage lever of the generator -1- must be reset in order to establish the required play to extend the generator. This can be done by tapping lightly on the fastening screw using an aluminium mandrel -2-.
3. Remove generator -1- upwards out of the slotted support. Unscrew fastening screw -3- and remove, together with the deflection roller -4-.
4. Turn generator -1- clockwise -Arrow A- until the holding arm projects beyond the retaining lug.





Extending generator

5. Tilt generator -1- carefully outwards and to the front -Arrow B- until the electric connections are accessible.
6. Release connector -2- and remove it -Arrow a-.





Disconnecting electric connections on the generator

7. Unscrew fastening nut -3- for the B+ lead -4- and remove the B+ lead -4-. Remove generator -1-.

Installing generator

Installing three-phase generator

1. Insert generator -1- , connect B+ lead -4- and tighten with fastening nut -3-. => Tightening torque: 15 Nm (11 ftlb.)





Connecting electrical connections on the generator

2. Connect plug -2- until it clicks into place.
3. Run in generator -1- carefully to the rear -arrow A-.





Running in generator

4. Turn generator -1- in an anticlockwise direction -arrow B- until the holding arm fits into its installation position behind the lug.
5. Insert and position fastening screw -3- and deflection roller -4- in generator -1-.





Tightening the fastening screws of the three phase generator

6. Insert generator -1- and fastening screw -3- from above into the slotted support and tighten fastening screw -3-. => Tightening torque: 46 Nm (34 ftlb.)
7. Tighten fastening screw -2-. => Tightening torque: 46 Nm (34 ftlb.)

Subsequent work

1. Install drive belt. -> 137819 Removing and installing drive belt - section on "Installing" 137819 Removing and installing drive belt
2. Connect the battery and carry out "Work instructions after disconnecting the battery". -> 2706IN Work instructions after disconnecting the battery 2706IN00 Work instructions after disconnecting the battery