38 | CURBTENDER, INC
D) Insert an Allen wrench and turn the adjustment clockwise to increase pressure, or
counter-clockwise to decrease the pressure.
4) Repeat step 2 to check the resistance cartridge pressure setting.
TAILGATE (“MAIN” VALVE) RELIEF PRESSURE CHECK
(The main valve relief cartridge is in series with the body valve relief cartridge. Therefore, the body valve
relief cartridge will need to be set to a pressure setting above 2,700 PSI before the main valve relief can be
set properly)
1) Install a 0-4,000 PSI test gauge on the body valve assembly test port.
2) Push and hold the sweep lever. Once the panel is “dead-headed”, keep the sweep lever actu-
ated, and read the pressure gauge. The pressure gauge should read 2,700 PSI.
IF NOT
3) Adjust the tailgate valve main relief pressure.
A) Loosen the locknut on the main relief cartridge, located to the right of the tailgate
lever.
B) Insert an large at head screw driver and turn the adjustment clockwise to increase
pressure, or counter-clockwise to decrease the pressure.
4) Repeat step 2 to check the main relief pressure setting.
TAILGATE PACKING MECHANISM CHECK (13 SECOND CYCLE)
1) Begin with the carriage and sweep cylinders in the fully retracted position. Push both the
swing and sweep levers in simultaneously.
2) The engine should accelerate, and the sweep panel should swing down. Once the sweep
panel has fully extended the detent should kick out, and the carriage panel will begin to rise.
At the end of it’s travel it will un-detent and stop.
3) Next, pull both the swing and sweep levers out simultaneously. The engine should
accelerate, and the sweep panel should move out. Once the sweep panel has fully retracted
the detent should kick out, and the swing panel will begin to fall. At the end of it’s travel it
will un-detent and stop.
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