Bigfoot 8k Mode d'emploi
SQUARE HYDRAULIC JACK
INSTALLATION & OWNER’S MANUAL
Quadra Manufacturing
Bigfoot Leveling Systems
305 US 131 SOUTH WHITE
PIGEON, MI 49099
800-752-9815
Visit Our Site @
BIGFOOTLEVELER.COM
Version #1122
THEREARE SIX KITS AVAILABLE:
12k Standard Single Point
One 12k Jack, One Pump, and Weatherproof Control Box.
12k Wireless Single Point
One 12k Jack, One Pump, and Wireless Key Fob & Emergency Switch Inside Tank.
12k Standard Slave Kit
Two 12k Jacks, One Pump, and Weatherproof Control Box,
NO side to side leveling.
12k Wireless Slave Kit
Two 12k Jacks, One Pump, and Wireless Key Fob & Emergency Switch Inside Tank,
NO side to side leveling.
12k Dual 2PT Kit
Two 12k Jacks, Two Pumps, and Weatherproof Control Box,
Jacks can run individually, so side to side leveling can be achieved.
8k Standard Single Point
•One 8k Jack, One Pump, and Weatherproof Control Box.
1
SQ824
#M4081
LARN STYLE BRACKETS
24" STROKE
8k-lb LIFT CAPACITY
MEDIUM TANK ASSEMBLY
STANDARD #M26850
MANUAL OVERRIDE #M26855
7" FIXED FOOTPAD
4" OUTER TUBING
'B' BRACKETS (4")
QTY: 5 PER JACK
#M28930
'B' BRACKETS SLIDE FOR
ADJUSTABLE WIDTH
3.6" TO 5.5" BEAM
1/2" G8 HEX BOLT x 5.5" TO 6.5" LONG
1/2" G8 HEX NUT
1/2" G8 LOCKWASHER
QTY: 2 OF EACH PER JACK
7/16" G8 HEX BOLT x 1.5" LONG
7/16" G8 HEX NUT
7/16" G8 LOCKWASHER
QTY: 3 OF EACH PER JACK
7/16" G8 HEX BOLT x 1.75"
7/16" G8 HEX NUT
7/16" G8 LOCKWASHER
QTY: 4 OF EACH PER JACK
DRILL 1/2" CLEARANCE HOLE THROUGH
TRAILER FRAME BULKHEAD OR BEAM
ATTACH JACK USING TWO 1/2" BOLTS
(EITHER IN 5.5" OR 6.5" LENGTHS)
2
RETRACT PORT
1/4" JIC
MEDIUM TANK ASSEMBLY
STANDARD #M26850
MANUAL OVERRIDE #M26855
3/8" G5 HEX BOLT x .5" LONG
3/8" G5 LOCKWASHER
QTY: 2 EACH PER PUMP
TAB BRACKET
QTY: 2 PER PUMP
#M28725
EXTEND PORT
1/4" JIC
7/16" G8 HEX BOLT x 1.5"
7/16" G8 HEX NUT
7/16" G8 LOCKWASHER
QTY: 2 EACH PER PUMP
TANK ASSEMBLY
RETRACT PORT
SQI-24
STANDARD LARN
#M4024
"B" BRACKETS
QTY: 4 PER JACK
#M28930
DRILL 1/2" CLEARANCE HOLE THROUGH
TRAILER FRAME BULKHEAD OR BEAM
ATTACH JACK USING TWO 1/2" BOLTS
(EITHER IN 5.5" OR 6.5" LENGTHS)
7/16" G8 HEX BOLT x 1.75"
7/16" G8 HEX NUT
7/16" G8 LOCKWASHER
QTY: 4 EACH PER JACK
1/2" G8 HEX BOLT x 5.5" to 6.5" LONG
1/2" G8 HEX NUT
1/2" G8 LOCKWASHER
QTY: 2 EACH PER JACK
"B" BRACKETS SLIDE FOR
ADJUSTABLE WIDTH
3.6" TO 5.5" BEAM
PIVOTING FOOTPAD
3
Mounting Instructions (SEE DIAGRAM PAGE 3)
Attach the “B” brackets (4” long angle brackets with slots in them, shipped loose) to the
backside of the jack’s plates using the 7/16”hardware, two 7/16”bolts per bracket is
OK, B-bracket face with slot to back of jack mounting plate for adjustability. Brackets
will form a clamping design to the trailer frame’s bulkhead (vertical, rectangular frame
section exposed on front of trailer). If no bulkhead, bolt jack directly to frame and
bypass the “B” brackets all together with supplied 7/16” bolts (4 per jack minimum) or
two to four 1/2" or 5/8”bolts (not included).
Level trailer (typical ride height) and support front of the trailer with jack stands.
Unbolt and remove existing jack (and brackets).
Set the Bigfoot jack temporarily to desired placement.
(Recommended Ground Clearance: Minimum of 8 inches, typically match old jack height)
Make sure new jack is level then mark placement of mounting holes on the frame also
called the bulkhead (rectangular frame).
If existing holes in bulkhead do not match the Bigfoot jack’s hole pattern, drill holes
using a 17/32 drill bit.
Then bolt the jack assembly to the bulkhead frame of the trailer using the 5 ½” & 6 ½”
long bolts (½” hardware). Tighten to 70 ft/lbs.
Plumbing of hydraulic lines:
1pt or Drive Leg: If the tank hoses are not already connected to the leg, the left fitting
on the tank assembly goes to the bottom fitting on the Bigfoot Jack, (the longest hose.)
2pt Slave Legs: Install “T” fittings at the drive leg’s ports, run the short hoses from the
tank assembly to the “T” fittings, run the longer hoses to the slave or driven leg.
Recommended Hydraulic Line Bleeding Process:
Prior to hooking up both slave leg hydraulic lines; install the retract line only, leave the
extend line un-attached at the slave leg and place the line in a container (the same container
used for filling the reservoir works well). After filling the reservoir and installing the controls
and power (may be temporary), press the extend button on the control to extend the jacks
for a moment until the container starts to be filled with the fluid from the slave leg’s extend
line. This means all the air is removed from that line and cannot be internally trapped in the
system. Install the extend line to the slave leg and continue to run the jacks to full extension
and leave for a moment (typically 15 minutes) and back down again. After doing so, top off the
hydraulic reservoir and process complete!
4
Tank Assembly Diagram
Fill with 2 quarts Dexron III ATF (automatic transmission fluid) only!
Replacement Assembly Standard motor: #M26850
Replacement Assembly Manual Override motor: #M26855
98oz. PLASTIC RESERVOIR
#M25507
5
Final Electrical Steps…
Hydraulic jack requires 12 volt battery; make sure you use at least a 4 gauge battery
cable for the power to the jack.
Remove plastic cover from pump assembly (if installed).
(Standard kits) Mount weather proof control box assembly in a convenient location
making sure to allow enough wire harness to reach the pump assembly.
Most trailers have the battery mounted on the front of the trailer in a box; install the 80
amp breaker (if equipped) using the self tapping screws in-line somewhere between the
jack and the battery.
Hooking up the breaker: Using the battery cable (if equipped); attach one end of the
cable to the bottom solenoid on the lug with the copper strip. Route the cable through
the grommet holes in the marked AUX then attach the other cable (if equipped) to the
circuit breaker post marked BAT and route the cable to the battery (DO NOT CONNECT
UNTIL THE REST OF THE TANK WIRING IS COMPLETE)
(Standard kits) Route the harness from the switch box through the grommet on the back
of the pump. Connect the green wire with the white strip to the small post on the top
solenoid (make sure to use the crimp on push on connector if supplied). Next, connect
the solid green wire to the small post on the bottom solenoid. You may now connect the
battery cable to the battery.
In the event the Tank Assembly is not attached or mounted to steel; it is necessary to
attach the AUX Ground from tank assembly to frame. (If tank Assembly is mounted to
steel, the ground is reached thru the tank body and frame of vehicle.)
At this point add fluid (ATF) to the pump (red fill cap) make sure you fill the tank so that
the fluid is ¾” below the top.
Then you must press the extend button and fully extend the jack(s) until it reaches full
extension. Let is set this way for 30 minutes, this bleeds the air from the lines.
Once that is done lower your system and enjoy your brand new BIGFOOT LEVELER.
6
7
8
9
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1
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