General & Limit Switch Maintenance - Quadra Bigfoot User Manual

General & Limit Switch Maintenance
For most Bigfoot landing gear and leveling systems...
#1. Check the power supply to the Bigfoot system, RV house batteries, diesel chassis battery, trailer battery, etc. Test the
voltage under load by using a volt meter and test your voltage with the system pump operating, if this drops below 10-
11 volts, you may need to look into replacing the battery or batteries. If voltage is good under load, you may need to
replace or check other connections on the pump assembly, including the power wire (connected to copper strip) and the
ground from the pump to the frame. Our pumps ground at the solenoid mounting flange and contact between the pump
steel housing and the frame it is bolted to, and has a 10 ga. cable that connects the tank body to the frame, typically
only 3-6 ft long.
#2. Inspect and maintain the limit switches
(if equipped) for each cylinder. See diagram on the
right to identify the limit switch. These can be
removed with a 7/8" wrench. To pro-long the life of
the switch, remove and apply di-electric grease on
the ball itself and the limit pin. These are normally
closed switches and are tied to your "All Up"
indication, Retract function, and ignition safety
alarm on your panel (if equipped).
#3. Check for fluid leaks on the ground, footpad,
hose, fittings, etc. Our systems use ATF so the fluid
should be red in color. If leak found, locate the origin
and check fluid level inside the pump assembly, fluid
level should be between 1-1.5" below the top of the
reservoir, central pump 4pt systems can be 1.5-2"
below the top.
#4. If your cylinder chrome shaft/rod is exposed (not
a square jack), spray dry teflon spray on the shaft
when leaving for long period of time, more
frequently if by the ocean or salty environment.
#5. After a few uses, check all the hardware for
cylinder mounting and pump mounting, re-torque to
proper specs to make sure the bolts did not come
loose. 3/8" & 7/16" hardware to 70 ft/lbs., 1/2" hardware to 100 ft/lbs., if bolt-on system, note any frame or bracket
deformation prior to reaching full torque spec. (some deformation is OK, as long as the structure & function of
component is still intact).
Feel free to contact us with any questions or concerns!
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