Air Lift Performance 3P User manual

Installation Manual
Kit Specific Component List
27697 / 27797
MN-994 • (021602) • ECR 8432
Missing or damaged parts? Call Air Lift Company customer service at [phone] for replacement parts.
STOP!
Tank Fittings and Tank Hardware are listed on back of sheet
MANIFOLD CONTENT
Item Part # Description....................................Qty
AE 72614 Manifold ECU 3/8” .................................... 1
AF 20947 Air Line 3/8” ..........................................60 ft.
FILTER CONTENT
Item Part # Description....................................Qty
AI 11217 P Clamp, 1.5” Cushion ...............................1
AJ 11517 Miniature Filter............................................1
AK 17173 Screw #14-1/4 x 3/4” Self-Tapping .............1
AL 20937 Hose 1/4” Dia Poly..................................5 ft.
AM 22677 Tee Fitting - 1/4” FNPT x (2) 1/4” PTC .......1
AN 21048 Pressure-Relief Valve.................................1
HARDWARE CONTENT
Item Part # Description Qty
A 26498-009 Harn – USB Display Cable .........................1
B 26498-006 Harn – Main Harness..................................1
C 27050 3H/3P Display ...............................................1
D 24503 Fuse ATM 3A..............................................1
E 24501 Fuse Holder ATM .......................................1
F 24502 Fuse Holder ATO/ATC ...............................1
G 24661 Heat Shrinkable Butt Splice 14-16GA............1
H 24752 Heat Shrinkable Butt Splice 10-12GA............3
I 24748 Ring Terminal 3/8” 10-12GA.........................2
J 24524 Ins. Female .187” Term. 14-16GA................1
K 24594 Ins. Female .250” Term. 14-16GA................1
Item Part # Description....................................Qty
L 24561 ATM Fuse Tap Adapter ................................1
M 24542 ATO/ATC Fuse Tap Adapter ........................1
N 10466 Zip Tie 8” Black...........................................20
O 17103 Screw 5/16”-18 x 1” Zinc...............................2
P 18542 Flat Washer 5/16” Stainless .........................2
Q 17263 Screw 1/4”-14 x 1” Self-Tapping Zinc...........1
R 17494 Screw 1/4”-14 x 2” Self-Tapping Zinc...........2
S 10530 Hose Cutter Kit..............................................1
 T 24504 FuseLow-ProleMini3A..............................1
 U 24505 Low-ProleMiniFuseTap............................1
V 24547 Fuse ATO/ATC 30A....................................1
COMPRESSOR
Item Part # Description....................................Qty
AG 16444 Compressor ................................................1
TANK
Item Part # Description....................................Qty
AH 11955 4 Gallon 5 Port Tank...................................1
AH 12955 4 Gallon 5 Port Tank (Polished) .................1
HEIGHT CONTENT
Item Part # Description....................................Qty
W 34977 HPACK- Height Sensor Linkage.................4
X 26894 Height Sensor Assembly ............................4
Y 26953-012 Harn-12FT RL Height Sensor* ...................1
Z 26953-013 Harn-12FT RR Height Sensor*...................1
AA 26953-020 Harn-20FT FL Height Sensor*....................1
Item Part # Description....................................Qty
AB 26953-021 Harn-20FT FR Height Sensor* ...................1
AC 10466 Zip Tie 8” Black.........................................20
AD 17497 Screw 10-16 x 1 3/4” Self-Tapping Zinc............ 8
AO 11998 Height Sensor Spacer......................................... 4
* FL = Front left corner
FR = Front right corner
RL = Rear left corner
RR = Rear right corner
Image may not depict actual kit.

Installation Manual
TANK FITTINGS
Item Part # Description....................................Qty
AP 21585 Plug - 1/4” MNPT........................................1
AQ 21737 Plug - 3/8” MNPT........................................1
AR 21779 Swivel Elbow - 1/4”MNPT x 1/4” PTC.........1
AS 21867 Swivel Elbow - 3/8”MNPT x 3/8” PTC.........1
Item Part # Description....................................Qty
 AT 21633 1/4”PTCInationValve..............................1
AU 20946 Air Line 1/4” ............................................2 ft.
AV 21773 Bushing - 3/8” MNPT x 1/8” MNPT.............1
AW 21854 Swivel Elbow - 1/8”MNPT x 3/8” PTC.......... 2
TANK HARDWARE
Item Part # Description....................................Qty
BD 18444 3/8” Flat Washer SAE.................................8
BE 17188 3/8”-16 x 1.25 Hex Cap Screw ...................4
Item Part # Description....................................Qty
BF 18435 3/8”-16 Nylon Nut .......................................4
MN-994 • (021602) • ECR 8432
Missing or damaged parts? Call Air Lift Company customer service at [phone] for replacement parts.
STOP!

MN-946 • 021604 • ECR 8488
For maximum effectiveness and safety,
please read these instructions completely
before proceeding with installation.
Failure to read these instructions can result in an
incorrect installation.
INSTALLATION GUIDE
Air Lift
Performance
3H /3P ™
PATENTED
™

Download the App for the Best #lifeonair
The Air Lift Performance 3 mobile app allows for full integration of your new 3H/3P control
system on compatible mobile devices. Simply download the FREE app to not only take
full control of your system, but to always have the latest system firmware with updates
directly from the app.
For iPhone: air-lift.co/3app
For Android: air-lift.co/android
Users can also search “Air Lift Performance” in either the Apple App Store or Google Play.
See 3H/3P User Guide for instructions on pairing your device.

TABLE OF CONTENTS
Component List ................................ 2
Introduction ................................... 3
Notation Explanation ...............................................3
Installing the Air Lift Performance 3H/3P Kit ........ 4
Layout Overview ...................................................4
Tank (Optional).....................................................5
Filter.............................................................6
Installing Harness ..................................................7
Installing Air Lines ..................................................9
Manifold......................................................... 10
Compressor (Optional) ............................................. 11
Height Sensors ................................................... 12
Installation Diagram ............................16
Troubleshooting Guide ..........................20
Leak Testing and Detection ......................20
Permissible Modifications .......................21
Display Mounting Template ......................23
Height Sensor Install Tool........................25
Manifold Mounting Template .....................27
16444 Compressor Mounting Template ............29
Limited Warranty and Returns Policy ..............31
Replacement Information ........................33
Contact Information ............................33

2MN-946
Installation Manual
Component List
HEIGHT CONTENT (OPTIONAL INCLUDED IN 3H SYSTEMS ONLY)
MANIFOLD CONTENT
HARDWARE CONTENT
Item Part # Description Qty
A 26498-009 Harn – USB Display Cable .................1
B 26498-006 Harn – Main Harness..........................1
C 27050 3H/3P Display ...................................... 1
D 24503 Fuse ATM 3A......................................1
E 24501 Fuse Holder ATM................................1
F 24502 Fuse Holder ATO/ATC........................1
G 24661 Heat Shrinkable Butt Splice 14-16GA ... 1
H 24752 Heat Shrinkable Butt Splice 10-12GA ... 3
I 24748 Ring Terminal 3/8” 10-12GA................ 2
J 24524 Ins. Female .187” Term. 14-16GA....... 1
K 24594 Ins. Female .250” Term. 14-16GA....... 1
Item Part # Description ............................. Qty
L 24561 ATM Fuse Tap Adapter ....................... 1
M 24542 ATO/ATC Fuse Tap Adapter ............... 1
N 10466 Zip Tie 8” Black .................................. 20
O 17103 Screw 5/16”-18 x 1” Zinc...................... 2
P 18542 Flat Washer 5/16” Stainless................. 2
Q 17263 Screw 1/4”-14 x 1” Self-Tapping Zinc .. 1
R 17494 Screw 1/4”-14 x 2” Self-Tapping Zinc .. 2
S 10530 Hose Cutter Kit..................................... 1
 T 24504 FuseLowProleMini3A ..................... 1
 U 24505 LowProleMiniFuseTap ................... 1
V 24547 Fuse ATO/ATC 30A............................1
Item Part # Description ............................. Qty
W 34977 HPACK- Height Sensor Linkage.........4
X 26894 Height Sensor Assembly ....................4
Y 26953-012 Harn-12FT RL Height Sensor*............1
Z 26953-013 Harn-12FT RR Height Sensor* ...........1
Item Part # Description ............................. Qty
AA 26953-020 Harn-20FT FL Height Sensor* ............1
AB 26953-021 Harn-20FT FR Height Sensor*............1
AC 10466 Zip Tie 8” Black.................................20
AD 17497 Screw 10-16 x 1 3/4” Self Tapping Zinc... 8
AO 11998 Height Sensor Spacer ............................... 4
3/8” Manifold (27685, 27695)
Item Part # Description ............................. Qty
AE 72614 Manifold ECU 3/8” ............................ 1
AF 20947 Air line 3/8”....................................60 ft.
1/4” Manifold (27680, 27690)
Item Part # Description ............................. Qty
AE 72615 Manifold ECU 1/4” ............................ 1
AF 20946 Air Line 1/4” ..................................60 ft.
COMPRESSOR (OPTIONAL)
Item Part # Description ............................. Qty
AG 16444 Compressor ........................................1
TANK (OPTIONAL)
Item Part # Description ............................. Qty
AH Varies Tank....................................................1
FILTER CONTENT
Item Part # Description ............................. Qty
AI 11217 Clamp P, 1.5” Cushion........................1
AJ 11517 Miniature Filter ....................................1
AK 17173 Screw #14-1/4 x 3/4” self-tapping.......1
AL 20937 Hose 1/4” Dia Poly..........................5 ft.
AM 22677 Tee Fitting, 1/4”...................................1
AN 21048 Pressure-Relief Valve .........................1
* FL = Front left corner
FR = Front right corner
RL = Rear left corner
RR = Rear right corner
Refer to Installation diagram on pages 16-17 for item illustrations.
Some kits include parts in addition to or different from what is listed here. Those kits
include an Installation Manual insert with a parts list for that kit.
NOTE
Missing or damaged parts? Call Air Lift customer service at [phone] for replacement parts.
STOP!

3
MN-946
Installation Manual
Introduction
The purpose of this publication is to assist with the installation, maintenance and
troubleshooting of Air Lift Performance®3H/3P.
Read and understand the entire installation guide before beginning installation or performing
any maintenance, service or repair. The information includes step-by-step installation
information, installation templates and a troubleshooting guide.
Air Lift Company reserves the right to make changes and improvements to its Air Lift
Performance products and publications at any time. For the latest version of this manual,
contact Air Lift Company at [phone] or visit airliftperformance.com.
NOTATION EXPLANATION
Hazard notations appear in various locations in this publication. Information which is
highlighted by one of these notations must be observed to help minimize risk of personal
injury or possible improper installation which may render the vehicle unsafe. Notes are used
to help emphasize areas of procedural importance and provide helpful suggestions. The
following definitions explain the use of these notations as they appear throughout this guide.
INDICATES IMMEDIATE HAZARDS WHICH WILL RESULT IN SEVERE PERSONAL INJURY
OR DEATH.
INDICATES HAZARDS OR UNSAFE PRACTICES WHICH COULD RESULT IN SEVERE
PERSONAL INJURY OR DEATH.
INDICATES HAZARDS OR UNSAFE PRACTICES WHICH COULD RESULT IN DAMAGE TO
THE MACHINE OR MINOR PERSONAL INJURY.
Indicates a procedure, practice or hint which is important to highlight.
NOTE
CAUTION
WARNING
DANGER
IF THE PRESSURE-BASED SYSTEM IS ALREADY INSTALLED BEFORE HEIGHT
SENSOR INSTALLATION, MAKE SURE TO DISABLE RISE ON START AND PRESET
MAINTAIN. THIS WILL PLACE THE SYSTEM INTO MANUAL MODE AND PREVENT
UNINTENDED ADJUSTMENTS. FAILURE TO FOLLOW THIS WARNING COULD RESULT
IN EQUIPMENT DAMAGE, BODILY HARM OR DEATH (SEE USER GUIDE).
FLOOR JACKS CAN BE DANGEROUS. WHENEVER USING A FLOOR JACK, MAKE
SURE IT IS RATED FOR THE LOAD IT IS LIFTING. CHECK THE VEHICLE OWNER’S
MANUAL FOR INFORMATION ABOUT WHERE TO PLACE THE JACK. BEFORE RAISING
THE VEHICLE, PLACE WHEEL CHOCKS IN FRONT AND BEHIND THE WHEELS TO
PREVENT THE VEHICLE FROM ROLLING. ALWAYS USE JACK STANDS TO SUPPORT
THE VEHICLE. NEVER GET UNDER OR PLACE ANY BODY PARTS UNDER A VEHICLE
THAT IS SOLELY SUPPORTED BY THE JACK.
REMOVE ALL FUSES WHEN JUMP-STARTING OR WELDING ON THE VEHICLE. FAILURE
TO DO SO COULD DAMAGE THE MANIFOLD.
CAUTION
WARNING
WARNING

4MN-946
Installation Manual
LAYOUT OVERVIEW
For a complete installation diagram, see pages 16-17. See page 2 for a complete parts list.
Layout
1. Plan component location first. Ideally, the manifold should be located at a level above
the compressor and tank to avoid compressor ingested water from gathering in the
manifold (fig. 1). This is most important for vehicles operated in below-freezing climates.
2. Prior to mounting components, check to make sure:
• the electrical harness connections will reach the manifold and compressor.
• the compressor leader hose will reach the tank.
• the air lines will route cleanly through the vehicle without kinking or bending.
Be sure to install all components as far as possible from any heat sources (figs. 2 and 3).
Plan and prepare harness and air line routing thru the vehicle. Eliminate all sharp edges that
could chafe. Use rubber grommets when passing through compartment walls.
Installing Air Lift Performance 3H/3P Kit
NOTE
NOTE
g. 1
g. 2 g. 3
MANIFOLD
AIR TANK
COMPRESSOR

5
MN-946
Installation Manual
TANK (OPTIONAL)
Tank pre-assembly
1. Determine tank location and orientation prior to installing fittings.
2. Before installing fittings, apply liquid pipe sealant or Teflon tape (not supplied) around
the male threads, leaving the first two threads uncovered.
NEVER BACK OFF AN INSTALLED PIPE FITTING TO ACHIEVE PROPER ALIGNMENT.
LOOSENING INSTALLED PIPE FITTINGS WILL CORRUPT THE SEAL AND CONTRIBUTE
TO LEAKAGE AND FAILURE.
3. Install the drain/fill PTC fitting in the tank’s lowermost threaded port.
4. Choose a middle tank threaded port for manifold/filter air line.
Tank install
1. Using the tank’s feet as a template, drill holes for hardware assembly.
2. Secure the tank using the supplied hardware.
3. Route the drain/fill air line with the Schrader valve (included in the tank hardware pack)
preferably outside the vehicle (fig. 4).
4. Install tee fitting and pressure-relief valve in-line to the drain fill line. Locate the pressure-
relief valve inside the vehicle, if possible.
Drain/
fill valve
routed
to vehicle
exterior
g. 4
INSTALLATION OF THE PRESSURE-RELIEF VALVE IS IMPORTANT TO ENSURE THE
SYSTEM IS NOT OVER-PRESSURIZED AS A RESULT OF A COMPRESSOR OR RELAY
FAILURE.
Pressure-relief
valve
Torque Specications
Fitting Size Turns Past
Finger Tight
Torque
lb./ft.
1/8” NPT 1.5 - 3.0 12
1/4” NPT 1.5 - 3.0 25
3/8” NPT 1.5 - 3.0 40
1/2” NPT 1.5 - 3.0 54
Table 1
The pressure-relief valve should be
mounted at an angle above horizontal.
Ideally, it would be mounted with the
valve pointed straight up, but any angle
above horizontal is acceptable. This will
stop water from collecting in the valve.
CAUTION
CAUTION

6MN-946
Installation Manual
FILTER
AIR COMPRESSORS TAKE IN MOISTURE (HUMIDITY) FROM THE OUTSIDE AIR
SOURCE, AND WILL DEPOSIT THAT MOISTURE IN THE AIR TANK. THE AIR LIFT
PERFORMANCE 3H/3P SYSTEM INCLUDES A FILTER THAT WILL GREATLY REDUCE
THE POTENTIAL FOR MOISTURE TO ENTER THE MANIFOLD. HOWEVER, TANKS
MUST BE REGULARLY PURGED TO ELIMINATE THE POSSIBILITY OF WATER
ENTERING THE MANIFOLD. BE SURE TO PROVIDE EASY ACCESS TO DRAIN/FILL
VALVE (PREFERABLY OUTSIDE THE VEHICLE). IF USING AN ENGINE-DRIVEN
COMPRESSOR, AN ADDITIONAL COALESCING FILTER MUST BE USED. OTHERWISE
THE LIFE OF THE PROVIDED FILTER MAY BE REDUCED DUE TO THE INCREASED
POTENTIAL FOR OIL BEING INTRODUCED INTO THE SYSTEM.
1. Mount the filter to the tank using the appropriate fittings (fig. 5).
2. Ensure the filter is mounted in a vertical position. Do not install filter inverted or angled.
(fig. 6).
3. The arrow on the filter indicates flow direction and must point toward the manifold (fig. 7).
4. If choosing not to mount the filter to the tank, run necessary hose from tank to the filter
and filter to the manifold using the appropriate fittings.
5. Run the hose from bottom of filter to location where water will drain (fig. 8).
g. 7
g. 8
g. 5
g. 6
Arrow on top of filter
pointing toward
manifold
Drain hose running
from filter to exterior
of vehicle
CAUTION

7
MN-946
Installation Manual
INSTALL HARNESS
The harness can be routed inside or underneath the vehicle. In either case, ensure all parts
of the harness are protected from abrasive edges and heat sources.
DISCONNECT THE BATTERY GROUND BEFORE INSTALLING THE SYSTEM.
REMOVE ALL FUSES WHEN JUMP-STARTING OR WELDING ON THE VEHICLE. FAILURE
TO DO SO COULD DAMAGE THE MANIFOLD.
1. Manifold/relay/compressor connections
• Attach the manifold connector; it will “click” into place once fully seated.
• Mount the compressor relay using supplied hardware.
• Cut off the spade and eyelet from the compressor power (red) and ground (black)
wires.
• Attach the compressor (red) wire to the main harness compressor power (red/white)
wire using the supplied heat-shrinkable butt splice.
• Attach the compressor (black) wire to the main harness compressor ground (black)
wire using the supplied heat-shrinkable butt splice.
2. Battery/ignition connections
• Route battery power (red) and ground (black) wires of the main harness to the
battery.
• Attach the battery power (red) wire to the red wire of the fuse holder using supplied
heat shrinkable butt splice.
• Attach supplied ring terminal to the other end of the fuse holder and fasten to the
positive battery (+) terminal or stud.
• Install a 30A fuse into this fuse holder and close the cap.
• Attach the other ring terminal to the ground (black) wire and fasten to the negative
battery (-) terminal or stud.
• Route the ignition (pink) wire to a key-switched ignition source that remains on
during cranking. Examples include: ECU, fuel pump.
Do not select an accessory source. With the system fully installed, if the display shuts off
while starting the vehicle, this is not a true ignition source.
• Attach the ignition (pink) wire to the black wire of the fuse holder.
• Attach a faston terminal to the other end of the fuse holder and attach to a selected
ignition source using a supplied fuse tap.
• Install a 3A fuse into this fuse holder and close the cap.
The supplied harness is only capable of powering a single compressor. If installing
dual compressors, a second dedicated power wire is required. Contact an AIR LIFT
PERFORMANCE retailer to purchase the optional second compressor harness kit (part
number: 27703).
NOTE
CAUTION
CAUTION
NOTE

8MN-946
Installation Manual
3. Display
• Route the main harness display cable as desired to the preferred operating location.
• Attach the 4’ display cable to the main harness cable, and to the back of the display.
4. Height sensor harness (optional)
• Route and attach each height sensor harness to the height sensor locations based
on the heat shrink labels for the appropriate corners of the vehicle (FL, FR, RL, RR)*.
• Connect the main harness height sensor drops to the appropriate height sensor
harness feeding the corresponding corners of the vehicle (match FL, FR, RL, RR)*.
5. Reconnect the battery once the system is completely installed.
Keep proper drip loops and use proper bend radius for wire bundles (fig. 9).
NOTE
g. 9
Route for potential
water intrusion
* FL = Front left corner
FR = Front right corner
RL = Rear left corner
RR = Rear right corner

9
MN-946
Installation Manual
INSTALLING AIR LINES
1. Route and attach the air lines from the manifold to the air springs and from the manifold
to the filter, as well as from the filter to the tank, if not mounting filter directly to tank.
• Route air lines free from abrasive edges and heat sources.
2. Attach air lines to the appropriate manifold ports for the air springs, filter/tank and
exhaust.
Air lines should be pushed in rmly, with a slight back-and-forth rotational twist – check the
connection by pulling on each line to verify a robust connection.
3. Exhaust port can be left open, or routed to preferred exhaust location. Routing exhaust
outside of vehicle will eliminate any possibility of moisture being discharged from the
port to surrounding area.
Use the included hose cutter (Part number: 10530). Cut all hose ends as squarely and as
smooth as possible (g. 10).
To release the air line from the connection (g. 11), rst release all air from the system.
Push on the line (step 1), depressing the ring towards the tting (step 2), and then pull the
hose out of the tting (step 3).
HELPFUL AIR LINE TIPS
4. Minimum hose bend radius
• 3/8” hose = 1.5” hose bend radius.
• 1/4” hose = 1” hose bend radius.
5. Hosetotting
• Nosideloadingonttingfromhose.
• Hose straight for 1” before bending.
6. Hose cutting
• Cut hose perpendicular to hose length.
• Inspect hose for scratches that run lengthwise on hose prior to insertion.
• Use the included hose cutter.
g. 10
GOOD CUT POOR CUT
g. 11
STEP 2 STEP 3
STEP 1
NOTE
NOTE
NOTE

10 MN-946
Installation Manual
MANIFOLD
BEST PRACTICE IS TO LOCATE THE MANIFOLD UNIT INSIDE THE VEHICLE. IF
EXTERNAL MOUNTING IS DESIRED, THE MANIFOLD SHOULD BE LOCATED IN AN
AREA SHIELDED FROM DIRECT WATER SPRAY FROM TIRES OR CAR WASHES.
1. Position the manifold in desired location. Make sure the manifold mounting surface
is flat.
When mounting the manifold, do so either horizontally or vertically, with ports and connector
facing toward the ground. Do not mount the manifold upside down. Proper manifold mounting
will help prevent water from settling in areas sensitive to freezing (g. 12).
2. Fasten the manifold using the supplied hardware. If the mounting surface is not flat,
add washers or a spacer to lift the manifold up over surface irregularities (fig. 13). In
addition to the provided self-tapping screws, the manifold mounting holes are threaded
and can be secured with 5/16-18 bolts (also supplied).
3. A manifold mounting template can be found on page 27.
g. 13
ACCEPTABLE
UNACCEPTABLE
g. 12
DOWN
UP
MANIFOLD
ROTATION/
ORIENTATION
IDEAL
NOTE
CAUTION

11
MN-946
Installation Manual
COMPRESSOR (OPTIONAL)
1. Prepare the compressor intake. If it is mounted inside the vehicle, attach the filter to
port on end of compressor (fig. 14). If the compressor is located outside the vehicle,
snorkel the inlet filter to dry location inside vehicle using components supplied with
compressor (fig. 15).
2. Center-punch and drill four holes using the compressor or the template on page 29.
3. Secure the compressor using the supplied hardware (see installation diagram).
NOTE: If using an Air-Zenith compressor see gure 33 on page 21.
g. 14
Filter attached
to compressor
g. 15
Compressor
mounted under
vehicle
COMPRESSOR
MOUNTING
HARDWARE
NOTE
Filter snorkeled
inside of vehicle
to reduce
moisture drawn
into the tank.
Mounting bolt
Flat washer
Compressor foot
Rubber bushing
Mounting surface
Flat washer
Lock washer
Nut

12 MN-946
Installation Manual
NOTE
IF THE PRESSURE-BASED SYSTEM IS ALREADY INSTALLED BEFORE HEIGHT
SENSOR INSTALLATION, MAKE SURE TO TURN OFF RISE ON START TO AVOID
UNINTENDED AIRING UP. (SEE USER GUIDE.)
HEIGHT SENSORS
Installation of height sensors is a trial-and-error process and requires patience. The goal is to
use as much of the sensor range as possible which will maximize height adjustment accuracy.
Determining Height Sensor Mounting Point
1. Choose a solid mounting point on the body or frame that will not deflect. Anything that
moves is not a good mounting point.
For best system performance, mount the sensors in the same location on the driver’s and
passenger’s sides of the vehicle. This will ensure that the sensor range is equal side to side.
2. The sensor can be mounted in any direction and will still work as long as the sensor
arm base’s extruded point is pointing toward the connector when the sensor arm is at
its mid-position. The height sensor assembly is supplied in position A. Remove the arm
to reposition it to B or C but keep the extruded point in the direction of the connector.
The orientation of the connector must be either facing down or parallel to the ground
to avoid water accumulating on the connector and making its way into the sensor.
Also, mount the sensor where the arm will be mounted opposite or 90 degrees from
the connector wiring if possible. If not possible, ensure the wiring harness is secured
away from arm travel so it will not get caught up when the arm cycles (fig. 16).
Do NOT position sensor with connector up, or with point on sensor base pointed anywhere
but at the sensor connector when arm is in its mid position.
3. Find a point where the sensor will be directly above the lower linkage mounting surface.
It may be necessary in some applications to fabricate a bracket to locate sensor in
appropriate position.
4. Make sure that the sensor and sensor arm clear the vehicles suspension, wheels, and
any other moving parts. This includes steering the wheels all the way to the lock position
left and right to ensure proper clearance. Provide enough clearance to compensate for
heavy load/movement that can’t be seen from manual/physical articulations.
5. Keep the sensor and wires away from heat sources and moving parts that will create
wear and may damage these components.
g. 16
A.
B.
C.
Extruded point
on sensor base
must point
toward the
connector as
arm is mounted
in mid position.
sensor arm
range
Preferred orientations (A., B.) Acceptable orientation (C.)
As supplied
Extruded
point
WARNING
NOTE
D.

13
MN-946
Installation Manual
6. Understand whether the suspension or wheel assembly is the limiting factor when
the vehicle is aired out. This will ensure proper accommodation of sensor arm travel.
7. If using self-tapping screws into the frame, make sure there are no wires or brake/air/
fuel lines on the other side before installing screw.
SELECTING SENSOR LOCATION
1. Mark on the vehicle the intended sensor mount location to maintain consistency in
measuringmethodsinthenextseveralsteps.Afterndingapotentialsensorlocation,
measure the suspension travel, which will determine the proper arm hole. Exhaust the
air springs, disconnect the air lines and jack up the suspension to its lower limit position.
Take the measurement between the selected sensor arm hole with the arm at its midpoint
anddirectlybelowtheintendedlowerlinkagelocation(g.17).
2. Reinstall air lines and cycle the suspension to get to the upper limit position again,
measuring between the sensor arm’s middle position and directly below the sensor arm
holemountingtothelowerlinkageballjoint(g.18).Thedifferencebetweenthesetwo
values will be the full suspension travel range.
Intended
lower linkage
mounting
location
g. 17
Intended
lower linkage
mounting
location
Measure the
dimension between
the selected arm hole
and the intended
lower linkage
mounting location.
g. 18
Measure this
dimension
FLOOR JACKS CAN BE DANGEROUS. WHENEVER USING A FLOOR JACK, MAKE
SURE IT IS RATED FOR THE LOAD IT IS LIFTING. CHECK THE VEHICLE OWNER’S
MANUAL FOR INFORMATION ABOUT WHERE TO PLACE THE JACK. BEFORE RAISING
THE VEHICLE, PLACE WHEEL CHOCKS IN FRONT AND BEHIND THE WHEELS TO
PREVENT THE VEHICLE FROM ROLLING. ALWAYS USE JACK STANDS TO SUPPORT
THE VEHICLE. NEVER GET UNDER OR PLACE ANY BODY PARTS UNDER A VEHICLE
THAT IS SOLELY SUPPORTED BY THE JACK.
WARNING

14 MN-946
Installation Manual
SELECTING SENSOR ARM HOLE
Max angle of travel for this sensor is 120 degrees, which can be correlated to the necessary
suspensiontravelasseeninthetablebelow(table2).Anysignicantover-extensionor
over-compression may damage and possibly destroy the sensor or sensor linkage.
The sensor should be mounted so the measured travel falls near one of the maximum
suspension range dimensions. Move the sensor closer or farther from the suspension pivot
pointtoachievethismeasurement.(g.20).
MODIFYING LINKAGE ANGLE
After selecting the location of the sensor and the arm hole to be used, determine the lower mounting
point. Ensure the angle between the mounting point and the sensor arm is less than 15 degrees.
Any more angle than that, will put unwanted stress on the components. Use the supplied spacer
on the lower mounting point to get the angle closer to vertical with respect to the sensor arm
(g.21).
Bolt
Bolt
Flat Washer
Flat Washer Flat Washer
Mounting
Location
Arm Nut
Nut
Spacer
Hole Maximum Suspension Range Minimum Suspension Range
First 2 3/4" 1 13/16"
Second 4 3/16" 2 7/8"
Third 5 5/8" 4 3/16"
Table 2
g. 19
g. 20
Second hole Third hole
Max angle —
15 degrees
g. 21
First hole

15
MN-946
Installation Manual
LINKAGE ASSEMBLY/MODIFICATION
1. Locatethelinkageandensuretherodisthreadedallthewayon(g.22).
2. Nextputthesuspensioninthemid-positionwithrespecttofullsuspensiontravel(g.23).
3. Fastenbyngertighteningthelinkagetothesensorarmand ensure the sensor arm
isatmid-positionwithrespecttothesensor(g.24).
4. Loosen if needed in order to extend to reach the lower mounting point. If loosening the
linkage to extend it is required, make sure to have at least 5 threads of engagement
onbothends(g.25).
5. If shortening the rod linkage is necessary, mark the rod cover where the mounting
locationintersectswiththeintendedmountinglocation(g.26).
g. 24
g. 23
Mid-position
Thread both ends all the way down
g. 22
Min.
Max.
g. 25
Minimum 5 threads
engaged
g. 26
Mark here
CONTINUED ON PAGE 18

16 MN-946
Installation Manual
Add-a- circuit fuse
In-line fuse
RL
RL Sensor (optional)
FL
FL Sensor (optional)
or
Heat-shrinkable butt splice
Heat-shrinkable butt splice
FL Bag (not included)
RL Bag (not included)
FR Bag (not included)
RR Bag (not included)
2nd compressor signal wire (optional)
Heatshrink
Relay
Filter (See page 6)
Drains to outside vehicle
Exhaust (See page 9)
To Battery (See page 7)
To Ignition Source (See page 7)
3H/3P Display (See User Guide)
FR Sensor (optional)
RR
RR Sensor (optional)
REAR
OF VEHICLE
FRONT
OF VEHICLE
oror
Attach filter
FR
FL FL
RL RL
FR
RR
RR
A
AE
AF
YR
O AND P
AA
U
Q
AD
X
B
Z
V
F
H
E
D
G
H
I
C
AJ
AL
AG
AH
J OR K
AB
Heat-shrinkable
butt splice
Refer to component
list on Page 2 for
complete part
descriptions.
Existing fuse
AM AN
Drain/Fill Valve (See page 5)
L OR M
REMOVE ALL FUSES WHEN JUMP- STARTING OR WELD- ING ON THE VEHICLE. FAILURE TO DO SO COULD RESULT IN DAMAGE TO THE MANIFOLD.
T
CAUTION
In-line fuse