3
1. Determine the Ride Height. This is defined as the distance
between the bottom edge of the fenderwell to the center point
of the wheel with the vehicle at the desired height (without a
load). Measurements should be taken before beginning the
installation. The distance from the bottom edge of the fenderwell
to the center point of the wheel should be recorded. All of our
kits are designed to be installed and operate at normal ride
height.
2. Measure the ride height distance. Enter the measurement
below:
Ride Height: ________ inches
3. After measuring and recording the ride height, jack up rear of
vehicle or raise on hoist. Raise axle or lower frame until the
leaf spring is at ride height (unloaded condition).
4. Measure the distance between the tire and outside of frame rail
(Figure 3). You must have a minimum of 5" to provide clearance
for the air spring when fully inflated.
IMPORTANT: This kit is designed to fit most ’95 and newer
Chevy Astro vans and GMC Safari vans with multi leaf steel
springs that have been lowered. 59111 is a side mount kit –
between the frame and tire. Due to the wide variety of lowering
kits on the market, Air Lift cannot guarantee that this kit will fit
every vehicle. You may need to modify the upper bracket, or
even weld it, depending on the type of kit the vehicle was
lowered with or optional equipment present. This will not void
the warranty. The sleeve must be mounted between 4" and 5"
tall. There must be at least 6.5" from the top of the leaf to the
bottom of the bed to achieve this (Figure 4).
5. Remove rear wheels.
6. Loosely attach the upper and lower brackets to the installation
tool using the
1
/
2
" flat washer,
1
/
2
" bolt, and nylon nut (Figure 1).
It is important that the hook of the lower bracket hooks over the
U-bolt, spring retainer, etc. so that the bracket is secure in place
(Figure 5).
If you have a flip axle conversion proceed with step a, if not go
to step b.
a. Flip Axle Kits:
(1) Support frame and drop rear axle all the way until axle
is hanging. If the shocks stop the axle from hanging
remove lower shock bolts.
(2) Remove leaf spring retaining U-bolts on one side and,
with a floor jack, raise axle to clear leaf spring centering
pin in leaf stack. A spacer is provided to accommodate
the increased thickness caused by the L-bracket (parts
pack 33772).
(3) Clamp the leaf spring together with a C-clamp so leaf
center pin can be removed.
Figure 5
Clamp Bar
3
/
8
"
Flat Washer
Nylon Lock Nut
Lower Bracket
Figure 4
Must be
4-5" installed
Figure 3
Minimum
of 5.0"
