Install screws at
locations 2 thru 8
and tighten in that
order. Re-tighten in
the same order.
(Careful, don’t over
tighten and strip
wood or twist off
screw head.)
Install screws 9 &
11 and tighten.
Holes 10 & 12 may
be secured with a
bolt as shown in fig.
2 (best when
possible). If not,
6.
7.
8.
9.
10.
11.
Optional Carriage Bolts
Sheet metal screws can be used in
these bracket holes provided they
do not penetrate the inner wall
WOOD
CORE
WOOD
CORE
Camper
Side Wall
Weatherproof
putty tape
16” Z Bracket
#14 Hex
Head Sheet
Metal Screws
TOP OF
JACK
3/8” Self-locking
Nut & Flat Washer
Torque = 25 Ft. Lbs.
(Do Not Exceed)
16” L Bracket
Fig. 2 - Drivers Side Front Corner (looking downward)
Sheet metal screws can be used if material exists in camper to hold screw
securely.
Secure the L bracket to camper with #14 sheet metal screws described in
step 5. Start at center and work out to ends. As with the Z bracket, bolts
can be used, if possible, in the 2 larger holes (see fig. 2).
Trim away excess putty tape and seal around edge of brackets with clear
silicone sealant.
Mount the jack to the bracket by placing the 3/8” stud bolts on jack through
holes A, D & G (fig. 1). Secure with 3/8” flat washer and self-locking nut
(fig. 2).
Torque = 25 Ft. Lbs. (Do Not Exceed)
Note: Alternate installation
scheme may require a bolt rather than a stud and nut at hole G.
The Rear Jacks
The Rear Jacks mount to “Z” bracket in combination with either a 5”
lower Z bracket or the 16” L reinforcing bracket. The 5” Z bracket
configuration is most common and is shown in the following illustration.
Determine the proper location for each bracket (see fig. 3). Brackets
must be placed vertically at a point where the foot of the jack just extends
below the bottom of the camper when fully retracted. NOTE: Alignment
of the 16” & 5” brackets is critical. A good way to ensure proper
alignment is to bolt both to the jack and then set in place and mark
location.
Mark, and remove any corner molding that will interfere with flush fit of
bracket against camper.
Cover inside surface of brackets (side against camper) with the
weatherproof putty tape and seat in place against camper corner by
tapping with mallet.
NOTE: If jack will not align with brackets, loosen
bracket screws and draw brackets into alignment, then
with jack in place, tighten accessible bracket screws.
Remove jack and tighten remainder of screws.
5
9
1
3
11
7
6
10
4
2
12
8
A
B
C
D
E
F
G
Fig. 3 - Passenger Side Rear
5” Z
Mounting
Bracket
16” Z
Mounting
Bracket
Numbers
show
tightening
sequence
H
I
J
3
1
5
6
2
4
Mount 16” Z bracket
in same manner as
front installation. If
using the 16” L
reinforcement bracket,
screw it to the Z
bracket before
installing on camper.
16” Z bracket in same
manner as front
installation. If using
the 16” L
reinforcement bracket,
screw it to the Z
bracket before
installing on camper.
Check bracket
alignment by installing
jack.
If alignment is good
and jack installs
properly, clean away
all excess putty tape
and seal around edges
of brackets with clear
silicone.
1.
2.
3.
4.
5.
6.
7.
Electric Jack Option
All mechanical Happijac camper jacks
(Acme Screw, Ball-
Screw, and Ball-Screw with Quick-release Leg) are fully
upgradeable to electric jacks. There is no need to buy new
jacks, all you need to do is buy the Motor Drive Assembly Kit
(and the Wiring Kit if your camper did not come prewired for
Happijac electric jacks), which you can install yourself, and
you are ready to enjoy the ease and comfort of remote
controlled electric jacks.
