Sioux Tools S202800, Manual

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manually attempt to open the head gate doors. The opening at the top of the doors should never
exceed ¾”.
Troubleshooting
If doors open greater than ¾” when hand pressure is applied (see fig. 2) try the following:
1) Bleed the cylinder of air (see fig. 1)
a. Push the handle in and hold.
b. While holding handle in, push top plunger down and hold approximately 1 minute.
c. Release handle and top plunger.
2) If Head Gate still does not hold, cylinder may not be activating properly.
a. Top plunger may be stuck. Lubricate top plunger rod where rod enters top reservoir with
an aerosol type lubricant.
b. Verify cap and jam nut on top plunger are tight and set at proper setting to prevent ½”
actuator rod from activating internal check valve.
3) It may be necessary to add additional oil to top reservoir or that cylinder does not have enough
oil. See previous page on adding additional oil to top reservoir or changing oil in cylinder.
Contact Sioux Steel for additional assistance if needed.
Bleeding Cylinder Testing Cylinder
(Fig. 1) (Fig. 2)
Push handle
in and hold
Push top plunger
down and hold
Movement should
be less than ¾”
Apply hand
Pressure to
doors