MN-612
7
6. Route the air line along the frame to the air fitting on the air spring (fig. 5). Keep AT
LEAST 6
"
of clearance between the air line and heat sources, such as the exhaust
pipes, muffler, or catalytic converter. Avoid sharp bends and edges. Use the plastic zip
ties (BB) to secure the air line to fixed, non-moving points along the chassis. Be sure
that the zip ties are tight, but do not pinch the air line. Leave at least 2
"
of slack to allow
for any movement that might pull on the air line.
Option 1
Option 2
fig. 5
7. Cut off air line leaving approximately 12
"
of extra air line. A clean square cut will ensure
against leaks (see fig. 3). Insert the air line into the air fitting. This is a push to connect
fitting. Simply push the air line into the 90 degree swivel fitting until it bottoms out (9/16
"
of air line should be in the fitting).
8. IMPORTANT: With the top and bottom still loose, inflate the air springs to approximately
10 PSI. Use the slots in the brackets to correctly align the air spring between the upper
and lower brackets. this can be accomplished by tapping it inboard or outboard for proper
alignment. There should be a symmetrical cushion of air around the base of the air spring
when correctly positioned.
THE ADDITION OF LIMITING STRAPS
If you intend to use the truck off-road or in situations where the suspension is extended,
it will be necessary to install limiting straps due to the long extension travel of the rear
suspension.
IF LIMITING STRAPS ARE NOT INSTALLED FOR VEHICLES USED OFF-ROAD, THE
SUSPENSION COULD PULL THE AIR SPRINGS APART. THE DAMAGE TO THE AIR
SPRINGS WILL NOT BE COVERED BY THE WARRANTY.
To determine the type of limiting straps needed for your vehicle:
1. Jack the vehicle up using the hitch or frame.
2. Measure the distance between the upper and lower air spring mounting brackets.
(Maximum extension on the air spring is 10
"
or slightly longer.)
3. Then measure from the center of one shock bolt to the center of the other. (This is
a common place to mount the limiting straps). This is the length needed to limit the
suspension from overextension.
4. Contact a local auto parts retailer to purchase limiting straps in the correct length for
your vehicle.
5. Follow the manufacturer’s directions on installing the limiting straps.
CAUTION
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