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Camper Jack
Owners Manual
Operating Instructions
CAREFULLY READ THESE INSTRUCTIONS BEFORE USING THE
HAPPIJAC CAMPER JACKS. CAUTION: NEVER RAISE JACKS
ABOVE RED SAFETY LINE MARKED ON INNER JACK LEG.
Load & unload camper on basically level ground, never on an obvious grade.
Use 12” sq. 3/4” plywood support pads under each jack to prevent sinking into
the ground or asphalt
Use extreme caution when the wind is blowing. Avoid storing camper in
windy, unsheltered areas and prevent snow accumulation on camper roof.
Secure camper with tie downs when stored outdoors.
Camper should be supported on a sturdy base during storage to prevent
damage to camper floor and the wing walls. When living in camper, the floor
should be firmly supported.
When leveling with the camper on the truck –
Unloading Your Camper
Make sure electrical connections and all tie downs are disconnected
between camper and truck body.
Insert crank handle (if using manual jacks) firmly into the crank socket
of one of the front jacks and begin cranking counter-clockwise to
extend. Raise the front of the camper 3” to 4” working side to side (if
alone) or together if 2 people are unloading.
Repeat step2 for the rear corners, then go back to the front and repeat
step 2. Caution: Never raise the back of the camper higher than
the front.
When the camper floor is clear of the truck bed (3” to 6”) slowly drive
the truck forward, being very careful not to hit the jacks or the camper.
Caution: Fill holes or move rocks that could cause the truck to
pitch into the jacks or the camper.
LOWER CAMPER: Insert crank handle into crank socket of either
rear jack and begin cranking clockwise (if using manual jacks). Lower
the rear 3” to 4” working side to side or together if more than one is
cranking. Move to the front and do the same. Work back and forth in
3” to 4” increments until desired height is reached.
For added safety and stability, support the camper floor with blocks
and use camper jacks to stabilize.
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Loading Your Camper
Raise camper, (see steps 2& 3 of the UNLOADING YOUR
CAMPER section) until the bottom of the camper is higher than
truck bed by 3” to 6”.
Slowly back the truck under the camper. Make sure truck and
camper are aligned so as not to hit the jacks or the camper with
truck fenders or wheel wells. See also the Caution in step 4
above. Connect electrical cables while accessible.
Lower camper onto truck bed. Crank clockwise on rear jacks first
lowering 3” to 4” then move to the front and do the same. Repeat
until the truck takes the full weight of the camper, then secure
camper to truck.
Completely retract all 4 jacks and stow crank handle.
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Maintenance
Frequently - check all mounting screws and other hardware for
tightness & proper jack alignment.
Every 6 months - wax mounting brackets and both inner and outer
tubes of jack with automotive wax.
Once each year - fully extend jacks to red safety line. This
redistributes lubrication evenly on the screw shaft. Remove top
cap and regrease gears (if needed) with white lithium grease.
Lightly oil bearings.
Support Services
For information regarding upgrading these jacks to remote
controlled electric powered units, or for parts, technical support,
or information regarding our other fine products, please contact
us via one of the following:
General Instructions
ALWAYS disconnect the camper tiedowns before leveling. Jacks are
not designed to lift both camper & truck! Damage can occur to jacks,
tiedowns and truck! Overloading jacks can result in jack failures.
Release Locking Lever (Down Position) at top of jack when cranking.
Be sure to reset Locking Lever (Up Position) when jacks are not
being cranked to avoid accidental jack extension.
Free
Locked
After periods of non-use, or anytime
jack seems to labor more than usual,
place a few drops of light oil, ie: 3 in 1
R
into the oil hole in the crank socket then
run the jack to distribute the oil.
Oil Here
Crank
Socket
HAPPIJAC
Installation Instructions
READ CAREFULLY BEFORE STARTING
Tools and Materials Required
• Electric drill & 5/32” drill bit
• 1/4” nut driver or socket
• 3/8” wrench or socket wrench
• Weather proof putty tape (available at RV stores)
• Extra hardware as required (See section 5
- Clear Silicone Sealant
• Hacksaw
• Wrench
• Mallet
The Front Jacks
Mount to either a “Z” or “T” bracket configuration. The Z + (L)
bracket is the most common and is shown in the following
illustrations.
Secure the L brackets to the Z brackets using # 8 sheet metal screw
at small hole marked X in figure 1 (Start from L side).
Determine the proper location for each bracket (see fig. 1) and
ensure that there is a strong solid load bearing corner in the
camper.
Mark, and remove any corner molding that will interfere with flush
fit of bracket against camper.
Cover inside surface of Z & L bracket 9side against camper) with
the weatherproof putty
tape and seat in place
Drill 5/32” pilot hole
at location 1, (fig. 1)
and secure bracket with
a #14 hex head sheet
metal screw. With all
slotted holes, place
screw at end of slot
furthest from corner of
camper, to allow bracket
to draw down tight.
Note: These screws are not
provided because of the vary-
ing wall thickness from camper
to camper. CAUTION: Be very
careful to select a screw which
will give maximum penetration
without piercing inner wall of
camper(normally 1-1/2”).
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5
9
3
11
7
against camper corner
by tapping with mallet.
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10
4
2
12
8
A
B
C
D
E
F
G
16” Reinforcing
Bracket
Camper
Side Wall
Drill pilot
hole in
end
furthest
from
corner
16” Z
Mounting
Bracket
Mount Bracket Flush with
Bottom of Wing Wall
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