Air Lift 3H User manual

Air Lift
Performance
3H Height
Upgrade Kit
27705
MN-947 • 011510 • ERN 7687
For maximum eectiveness and safety,
please read these instructions completely
before proceeding with installation.
Failure to read these instructions can result in
an incorrect installation.
INSTALLATION GUIDE
PATENTED
™

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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 Upgrade Kit .....4
Install Harness.....................................................4
Height Sensors ....................................................5
Installation Diagram ..............................8
Height Sensor Install Tool ........................13
Limited Warranty and Return Policy ................17
Replacement Part Information ....................17
Contact Information .............................17

2MN-947
Installation Manual
Component List
HEIGHT CONTENT
Item Part # Description ..............................Qty
A 34977 HPACK- Height Sensor Linkage ......... 4
B 26894 Height Sensor Assembly .................... 4
C 26953-012 Harn-12FT RL Height Sensor*............ 1
D 26953-013 Harn-12FT RR Height Sensor* ........... 1
E 26953-020 Harn-20FT FL Height Sensor* ............ 1
Item Part # Description ..............................Qty
F 26953-021 Harn-20FT FR Height Sensor*............ 1
G 11998 Height Sensor Spacer ........................ 4
H 10466 Zip Tie 8” Black ................................ 20
I 17497 Screw 10-16 x 1 3/4” Self Tapping Zinc ...8
* FL = Front left corner
FR = Front right corner
RL = Rear left corner
RR = Rear right corner
Refer to Installation diagram on pages 8-9 for item illustrations.
Missing or damaged parts? Call Air Lift customer service at [phone] for replacement parts.
STOP!

3
MN-947
Installation Manual
Introduction
The purpose of this publication is to assist with the installation, maintenance and
troubleshooting of Air Lift Performance 3H/3P Height Upgrade Kit.
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
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. 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.
WARNING
WARNING
DANGER
CAUTION
WARNING
CAUTION

4MN-947
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.
REMOVE ALL FUSES WHEN JUMP-STARTING OR WELDING ON THE VEHICLE.
FAILURE TO DO SO COULD DAMAGE THE MANIFOLD.
1. Height sensor harnesses
• 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)*.
Keep proper drip loops and use proper bend radius for wire bundles (fig. 1).
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.)
If extending the height sensors is necessary because of the size of the vehicle, order
one of two kits: Part number 27700 (2)-4’ extension harnesses, 27702 (2)-8’ extension
harnesses.
Installing Air Lift Performance 3H Height Upgrade Kit
NOTE
g. 1
Route for potential
water intrusion
* FL = Front left corner
FR = Front right corner
RL = Rear left corner
RR = Rear right corner
NOTE
CAUTION
CAUTION

5
MN-947
Installation Manual
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.
Determininig Height Sensor Mounting Point
1. Solid mounting point on the body or frame that will not deect. Anything that moves
is not a good mounting point.
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 (g. 2).
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.
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.
NOTE
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.
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.
g. 2
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

6MN-947
Installation Manual
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 finding a potential sensor location,
you will need to 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 (fig. 3).
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 (fig. 4). The difference between
these two values will be the full suspension travel range.
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
Intended
lower linkage
mounting
location
g. 3
Intended
lower linkage
mounting
location
Measure the
dimension between
the selected arm hole
and the intended
lower linkage
mounting location.
g. 4
Measure this
dimension

7
MN-947
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 1). Any significant 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. (fig. 6).
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 (fig. 7).
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 1
g. 5
g. 6
Second hole Third hole
Max angle -
15 degrees
g. 7
First hole

8MN-947
Installation Manual
Add-a- circuit fuse
In-line Fuse
RL
RL Sensor
FL
FL Sensor
or
Fuse
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
Drains to outside vehicle
Exhaust
To Battery
To Ignition Source
3H/3P Display (See User Guide)
FR Sensor
RR
RR Sensor
REAR
OF VEHICLE
FRONT
OF VEHICLE
oror
Attach filter
FR
FL FL
RL RL
FR
RR
RR
C
E
Heat-shrinkable
butt splice
Refer to component
list on Page 2 for
complete part
descriptions.
Existing fuse
Drain/Fill Valve
REMOVE ALL FUSES WHEN JUMP- STARTING OR WELD- ING ON THE VEHICLE. FAILURE TO DO SO COULD RESULT IN DAMAGE TO THE MANIFOLD.
CAUTION
BF
I
D

9
MN-947
Installation Manual
NOTE
NOTE
NOTE
Add-a- circuit fuse
In-line Fuse
RL
RL Sensor
FL
FL Sensor
or
Fuse
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
Drains to outside vehicle
Exhaust
To Battery
To Ignition Source
3H/3P Display (See User Guide)
FR Sensor
RR
RR Sensor
REAR
OF VEHICLE
FRONT
OF VEHICLE
oror
Attach filter
FR
FL FL
RL RL
FR
RR
RR
C
E
Heat-shrinkable
butt splice
Refer to component
list on Page 2 for
complete part
descriptions.
Existing fuse
Drain/Fill Valve
REMOVE ALL FUSES WHEN JUMP- STARTING OR WELD- ING ON THE VEHICLE. FAILURE TO DO SO COULD RESULT IN DAMAGE TO THE MANIFOLD.
CAUTION
BF
I
D
IF THE PRESSURE-BASED SYSTEM IS ALREADY INSTALLED
BEFORE HEIGHT SENSOR INSTALLATION, MAKE SURE TO TURN OFF RISE ON START TO AVOID UNINTENDED SUSPENSION CYCLING. (SEE USER GUIDE.)
WARNING

10 MN-947
Installation Manual
LINKAGE ASSEMBLY/MODIFICATION
1. Locate the linkage and ensure the rod is threaded all the way on (fig. 8).
2. Next put the suspension in the mid-position with respect to full suspension travel
(fig. 9).
3. Fasten by finger tightening the linkage to the sensor arm and ensure the sensor arm
is at mid-position with respect to the sensor (fig. 10).
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 (fig. 11).
5. If shortening the rod linkage is necessary, mark the rod cover where the mounting
location intersects with the intended mounting location (fig. 12).
g. 10
g. 9
Mid-position
Thread both ends all the way down
g. 8
Min.
Max.
g. 11
Minimum 5 threads
engaged
g. 12
Mark here

11
MN-947
Installation Manual
6. Remove the rod linkage from the sensor arm and measure 1/2” back from the mark.
This will show where to cut the rod (fig. 13).
7. Before cutting the rod, thread the jam nut back on the rod. Use the nut to debur the
rod end. (fig. 14).
8. Cut the rod cover 5/8” shorter than the rod length with the rod assembled on one
end after cutting (fig. 15).
9. Assemble linkage back together, and fasten it to the sensor arm and lower mounting
location with supplied hardware (fig. 16). Temporarily secure the sensor in its
intended location including using the height sensor spacer that is provided.
g. 16
g. 15
Cut here Cover
5/8”
Cut here
Jam nut
Mark
Cut here
g. 13
1/2”
Rod cover
g. 14

12 MN-947
Installation Manual
DISPLAY SETTINGS
Once the height sensor is installed, go into the main menu screen on the ALP3 display,
go to operations and then select Pressure/Height Mode and set to Height. Use the
sensor tool as described in the next steps.
ENSURE RISE ON START IS SHUT OFF PRIOR TO THIS STEP.
VERIFYING SUSPENSION RANGE
Use the paper height sensor tool on page 24 or electronic sensor tool in the display to make
sure the range is sufficient to provide accurate measurements (fig. 17). (See User’s Guide).
Next, air the vehicle up and down to see if there is any issue with the travel of the sensor
using the height sensor install tool.
After confirming that the range is correct and adequate, permanently secure the position
of the sensor using the supplied hardware.
Complete this for all four sensors. Once the system is completely installed and system
calibration is done, if any of the height sensors are out of range, there will be a warning
message and the affected corner’s visual indicators will not move with pressure
adjustments. See User’s Guide for more information.
MODIFYING SENSOR ARM
Follow the arcs around the appropriate holes to make the arms shorter. Keep the
smooth, rounded contour of the end of the arm (fig. 18).
CALIBRATION
After installation of all the height sensors, run through the calibration setup again and
this time select height sensors install when prompted. Details of this step can be found
in the 3H User Guide.
WARNING
Maximum range
of sensor: 120
degrees
Angles measured
from arm centerline
g. 18
Arc for trimming
g. 17

13
MN-947
Installation Manual
Height Sensor Install Tool
80˚
60˚
120˚
100˚
80˚
60˚
120˚
100˚
80˚
60˚
120˚
100˚
80˚
60˚
120˚
100˚
✃
✃
✃
✃
80˚
60˚
120˚
100˚
Cut out the height sensor tools
and position each one as shown
at right depending on the height
sensor orientation. It would be
a good idea to make copies of
this page in case the tools are
damaged during installation.
Make sure to copy at 100% so
the tools are the correct size.
The drawing to the right is not to
scale.
0 1
INCH

15
MN-947
Installation Manual
Notes

16 MN-947
Installation Manual
Notes

17
MN-947
Installation Manual
Replacement Part Information
If replacement parts are needed, call Air Lift customer service. Most parts are immediately
available and can be shipped the same day.
Contact Air Lift Company customer service at [phone] first if:
• Parts are missing from the kit.
• Need technical assistance on installation or operation.
• Broken or defective parts in the kit.
• Wrong parts in the kit.
• Have a warranty claim or question.
Contact the retailer where the kit was purchased:
• If it is necessary to return or exchange the kit for any reason.
• If there is a problem with shipping if shipped from the retailer.
• If there is a problem with the price.
Contact Information
Mailing address P.O. Box 80167
Lansing, MI 48908-0167
Shipping address 2727 Snow Road
for returns Lansing, MI 48917
Phone Toll free: [phone]
International: [phone]
Email [e-mail]
Web address www.airliftcompany.com
Limited Warranty and Return Policy
Air Lift Company provides a 1-year limited warranty to the original purchaser of Air Lift
Performance damper kits from the date of original purchase, that the products will be free
from defects in workmanship and materials when used on vehicles as specified by Air
Lift Company and under normal operating conditions, subject to the requirements and
exclusions set forth in the full Limited Warranty and Return Policy that is available online at
www.airliftperformance.com/warranty.
For additional warranty information contact Air Lift Company customer service.
Air Lift Company reserves the right to make changes and improvements to its products
and publications at any time. For the latest version of this manual, contact Air Lift
Company at [phone] or visit www.airliftperformance.com.

Need Help?
Contact Air Lift customer service department at
[phone], Monday through Friday. For calls
from outside the USA or Canada, call [phone].
Air Lift Company • 2727 Snow Road • Lansing, MI 48917 or P.O. Box 80167 • Lansing, MI 48908-0167
Toll Free [phone] • Local [phone] • Fax [phone] • airliftperformance.com
Printed in the USA
JJC-0117
Thank you for purchasing Air Lift Performance products!