978919 Removing and installing power distributor (HSB)

WM 978919 Removing and installing power distributor (HSB)

Technical values





Preliminary work

1. Disconnect battery ground strap. -> 2X00IN Work instructions after disconnecting the battery - section on "Disconnecting" 2X00IN Work instructions after disconnecting the battery
2. Loosen the fuse box. -> 978409 Loosening and securing fuse box - section on "Loosening" 978409 Loosening and securing fuse box

Removing power distributor (HSB)

NOTICE

Voltage peaks

- Risk of damage to loads or to the control unit

-> Disconnect the battery before removing the component or control unit.





Installation position of power distributor (HSB)

1. Switch off ignition and remove remote control.
2. Unscrew the fastening screw on the power distributor (HSB) -arrow A-.
3. Pull the power distributor (HSB) up out of the guide -arrow B- and carefully set it aside.





Unscrewing fastening screw

4. Release the cover on the power distributor (HSB) and open it.





Opening cover

5. Release electric plug connections -1, 2- , disconnect them -arrow A- and unclip the connecting lines -arrow B-.





Disconnecting electric plug connections

6. Unscrew the fastening nuts for the battery lines and pull the connections out through the openings if necessary.





Unscrewing fastening nuts

7. Mark the connecting lines for the relevant fuse element.
8. Unscrew the fastening nuts on the fuse elements and pull the lines off the connection.





Unscrewing fastening nuts on safety fuses

9. Remove the power distributor (HSB).

Installing power distributor (HSB)

WARNING

Incorrect handling of safety bolts

- Danger of injury
- Loss of torque

-> Always use new fastening screws and nuts following removal.
-> Observe specified tightening torques.
-> Carry out a visual inspection of all re-used parts.

1. Fit the fuse elements according to the wiring diagram and fit the marked connecting lines one after the other in the power distributor and secure with the fastening nuts. => Tightening torque: 5 Nm (3.5 ftlb.)





Tightening fastening nuts on safety fuses

2. Pull the battery leads through the opening into the power distributor (HSB) if necessary.
3. Attach the battery leads and secure with the fastening nuts.
=> Tightening torque: 8 Nm (6 ftlb.)





Tightening fastening nuts

4. Connect electric plug connections -1, 2- ( -arrow C- ) until they engage securely.
5. Clip in connecting lines -arrow D-.





Connecting electric plug connections

6. Close the cover on the power distributor (HSB) until the locking lugs engage securely.





Closing cover

7. Slide the power distributor (HSB) into the guide -arrow C- and screw in the fastening screw -arrow D-.





Tightening fastening screw

Subsequent work

1. Secure the fuse box. -> 978409 Loosening and securing fuse box - section on "Securing" 978409 Loosening and securing fuse box
2. Connect battery ground strap. -> 2X00IN Work instructions after disconnecting the battery - section on "Connecting" 2X00IN Work instructions after disconnecting the battery