General Maintenance 87
4. Open the tailgate using the TAILGATE UP switch on the in-cab control panel and listen if the
warning buzzer and backup alarm start sounding after you press the switch.
5. Repeat the procedure if need be.
Adjusting Tailgate Fully Open Proximity Switch (optional)
The tailgate fully open proximity switch (see Figure 3-89) allows the operator to raise the body when
the tailgate is fully open.
This switch is present only when required by different interlocks such as the single ICC bumper
interlock for dual tailgates.
Figure 3-89
Tailgate fully open proximity switch
This switch is on the body street side near the tailgate hinge.
To adjust the tailgate fully open proximity switch:
1. Fully open the tailgate.
2. Adjust the switch so that it detects the target.
If detection is achieved, the
BODY RAISE ALLOWED warning light turns on.
3. Slightly close the tailgate to about an inch.
The proximity switch should not now detect the target and the
BODY RAISE ALLOWED warning
light should go out.
4. Repeat the procedure until the proximity switch is properly adjusted.
Adjusting Hopper Door Proximity Switch
This proximity switch (see Figure 3-90) turns off all hydraulic power when the hopper door is not
closed.