Vehicle Load Disconnect Switch Replacement LSSV /Maintenance Body

Caution: Refer to Battery Disconnect Caution in the Preface section.




1. Disconnect the battery cables. Refer to Battery Cable Disconnect and Connection .
2. Remove the disconnect switch key and the left upper brace.
3. Remove the electrical center cover assembly (1) by lifting the cover outwards to clear the tabs (3).



4. Remove the switch mounting nuts and bolts.
5. Remove the nuts holding the 24V and 12V cables to the switch and remove the cables.

Note location of cables removed for assembly.

Notice: Refer to Fastener Notice in the Preface section.




1. Install the 24V and 12V cables to the switch and install the cable mounting nuts.

Tighten
Tighten the cable mounting nuts to 9 N·m (80 lb in).

•	Red cable from 24V battery positive (1) to terminal 4.

•	Red/black cable (4) from 24V generator to terminal 3.

•	Red cable (3) from UBEC to terminal 1.

•	Red cable (2) from 24V battery negative to terminal 2.




2. Install the switch to the underhood electrical center cover.

Tighten
Tighten the switch mounting nuts to 9 N·m (80 lb in).




3. Set the electrical center cover assembly in its resting position until the tabs (3) lock into place.
4. Install the fender upper brace and the disconnect switch key.
5. Connect the battery cables. Refer to Battery Cable Disconnect and Connection .

Vehicle Load Disconnect Switch Replacement Ambulance

Caution: Refer to Battery Disconnect Caution in the Preface section.




1. Disconnect the battery cables. Refer to Battery Cable Disconnect and Connection .
2. Remove the disconnect switch key (1) from the switch (2).



3. Remove the switch mounting nuts and bolts (1).
4. Remove the cable cover mounting screws (2).
5. Remove the switch cable cover (3).
6. Remove the nuts holding the 24V and 12V cables to the switch and remove the cables.

Note location of cables removed for assembly.

Notice: Refer to Fastener Notice in the Preface section.




1. Install the 24V and 12V cables to the switch and install the cable mounting nuts.

Tighten
Tighten the cable mounting nuts to 9 N·m (80 lb in).

•	Red cable from 24V battery positive (1) to terminal 4.

•	Red/black cable (4) from 24V generator to terminal 3.

•	Red cable (3) from UBEC to terminal 1.

•	Red cable (2) from 24V battery negative to terminal 2.




2. Install the switch cable cover (3).
3. Install the switch cable cover mounting screws (2).

Tighten
Tighten the switch cable cover mounting screws to 1.6 N·m (14 lb in).

4. Install the switch to the mounting bracket and install the mounting nuts and bolts (1).

Tighten
Tighten the switch mounting nuts to 9 N·m (80 lb in).




5. Install the switch key (1) to the switch (2).
6. Connect the battery cables. Refer to Battery Cable Disconnect and Connection .