VIAIR Onboard Air Hookup Kit - Manual (Page 4)

STEP BY STEP INSTALLATION:
1. Select a mounting location with a rigid mounting surface such as the bottom edge of the
dashboard, on either side of the steering wheel column. Use the gauge mounting panel as a
template; mark off 2 mounting points to be drilled. Drill two 13/64” diameter holes as marked.
Do not mount Dash Panel Gauge at this time.
2. Remove only the collar of the compression fitting from the back of the Dash Panel Gauge. Do
not loosen or tighten the body of the compression fitting, which is permanently affixed to
the air inlet of the gauge. Insert air line tubing through this collar, then, push air line tubing onto
the barb of the compression fitting until the air line completely covers the barb. Tighten collar
onto the body of the compression fitting. (See Fig. 1)
NOTE: When cutting air line tubing, always cut as squarely as possible. Use a hose
cutter or razor blade. To ease insertion of air line tubing into fittings, lightly lubricate tip of air
line, or soak air line tubing in warm water for about 5 minutes to soften the air line. When routing
air line tubing, always remember to avoid sharp edges, heat sources and tight bends (Air line
must be routed at least 12” away from exhaust systems & components.)
3. Route the air line tubing on the Dash Panel Gauge to the air source. (See Figures 3 & 4) Do
not cut air line at this time. In some cases a hole may be required to be drilled in the firewall to
enable the air line to pass through the firewall to the air source. Make sure that the air line tubing
is protected from any sharp edges of the drilled hole. A continuous grommet strip is included in
your kit. Seat grommet strip around the edge of the hole, measure and cut strip to appropriate
length. Work the strip around the hole opening until slot in the grommet strip seats firmly all the
way around the edge of the hole. It will be necessary to seal any grommets or holes that have
been cut or drilled so as to seal off elements from entering the cab area of vehicle. Use cable
ties, air line clips, and or cable tie brackets to secure the air line to the vehicle.
IMPORTANT:
Drilling through firewall --- Always make sure what is on the other side of the
firewall before drilling. Make sure not to damage your vehicle’s electronic systems
or components when drilling.
4. There are two tee fittings used in this kit, a female tee and a male tee. Install the quick connect
coupler onto one leg of the female tee fitting as shown. (See Fig. 3) On the opposite leg, attach
the male tee as shown to complete Tee Fittings Assembly. (See Fig. 3) Note: Apply sealant to
threads prior to connecting all fittings.
5. Select a rigid surface where the cable tie bracket can be mounted. Use provided cable
tie(s) to secure the tee fittings assembly to the cable tie bracket. Use two cable ties if
necessary to secure the tee fittings assembly. Keep in mind that the location of the tee
fittings assembly (female tee/male tee/quick connect coupler), should be close enough
to the air compressor so that the 1.5 ft. leader hose of the compressor can reach the quick
connect coupler.
USER MANUAL
ONBOARD AIR HOOKUP KIT