Labrie Pendpac WITTKE RETRO FL Maintenance Manual page 90

80 Maintenance
Figure 3-18 Tailgate ajar proximity switch (protective cover removed)
Adjustment Procedure:
1.
On the MDM control module, press the REAR DOOR toggle switch down while pressing the
DOOR ENABLE switch to relieve any pressure on the tailgate latch blocks.
2.
Remove both tailgate locks.
3.
Remove the cover protecting the tailgate ajar proximity switch.
4.
Lower the latch hooks and open the tailgate. Check that the tailgate ajar proximity switch
warning lamp illuminates and buzzer sounds as soon as switch contact is lost.
5.
With the tailgate open, operate the PACK button. The pack function should be disabled.
6.
Close the tailgate and raise the latch hooks. The tailgate ajar proximity switch should be triggered
again. Check that the tailgate ajar proximity switch warning lamp extinguishes and buzzer is silent
as soon as switch contact is back.
Adjustment of the gap between the switch and the tab may be required if the switch contact is not
working properly. To do so:
6 a. Complete lockout/tagout procedure (see Lockout/Tagout Procedure on page 37).
6 b. Loosen the proximity switch mounting nuts. Slide the switch forward or backward in the
mount to achieve a gap of approximately 1/4" with the tab.
6 c.
Tighten the proximity switch nuts.
6 d. Test the operation.
7.
With the tailgate closed, operate the PACK button and ensure the packer blade travels to the
mid-body. Return the blade to the 'home' position.
8.
Repeat steps if necessary.
9.
Re-install both tailgate locks, and re-install protective cover.
Adjusting Tailgate Mercury Switch
The tailgate mercury switch (see Figure 3-19) allows you to enable the pack cycle when the tailgate is
fully open. When fully open, it bypasses the half pack proximity switch that limits packer blade travel
to the half-pack position and allows the packer blade to complete a full eject sweep. In addition, this
proximity switch disables autopack.
Location:
The mercury proximity switch is inside the tail light box directly behind the left tail light. Mounted
with a bracket bolted to the light box, it is positioned in the open (default) position.