Installation Manual

Figure 4. Jack Stand Height
Jack
Stand
Height
GENERAL INFORMATION
The Haldex Controlled Response (CR) Height Control Valve (HCV) automatically adds
air to, or exhausts air from air suspension to maintain a constant static design height.
The Type CR Height Control Valve does not respond to short duration dynamic changes
in axle position.
-- The Haldex Type CR HCV can be used for right hand or left hand and long or short
control arm applications. Refer to installation instructions herein for proper plumbing
connection.
-- All valve ports are 1/8” NPT.
-- Compression fittings for 1/4”, 3/8” or metric tubing, or push-in fittings are available -
specify when ordering.
-- Optional dump functions are available using
Part No. 90554902 or Part No. 90554335.
-- Several different linkage assemblies can be
purchased. Contact your Haldex Distributor for details.
NOTE: The Haldex Type CR can be interchanged with
other brands of height control valves.
PRE-INSTALLATION INFORMATION
IMPORTANT: The Height Control Valve (HCV) and linkage are designed to maintain
the vehicle ride height as loads increase and decrease. Proper set up of the HCV(s) is
critical to the system performance. Prior to any assembly or disassembly, please read all
instructions. Should you feel unable to properly perform the installation and adjustments
of a Haldex Type CR HCV contact Haldex Technical Services or have a certified mechanic
install or adjust the valve.
CAUTION: Incorrect installation of valves and associated components can impair
suspension and vehicle performance. It is extremely important that the original equipment
manufacturer’s specifications of a one- or two-HCV system are followed when installing
the air control system. Refer to vehicle and suspension manufacturer’s instructions for
recommended valve location.
DO NOT install a single height control valve of any type if the suspension or vehicle
manufacturer specifies a two (2) height control valve system.
DO NOT use antifreeze or other solvents in air supply line. Use of
solvents or antifreeze can damage seals and voids the valve warranty.
ALWAYS use a Pressure Protection Valve (PPV) and filter such as the
Haldex Part Number 90554107. Attach PPV directly to the air reservoir
for supply to the Type CR HCV.
INSTALLATION INSTRUCTIONS
NOTE: Prior to installation, rotate control arm 3-5 times 360 degrees in
both the intake and exhaust directions to remove any adverse effects of
storage.
1. Prepare the vehicle for installation. The vehicle should be in an unloaded
condition before starting installation procedures. Be certain all dump switches
are off. Park the vehicle making sure all vehicle wheels are on a hard, level surface.
Raise and properly support all auxiliary axles. Do not set the parking brakes,
instead use safety wheel chocks to secure the vehicle.
WARNING: Failure to support auxiliary axles could allow axle to drop causing
death or serious personal injury. Failure to use wheel chocks could allow vehicle to
roll resulting in death or serious personal injury.
Check to make sure there is enough room to work around and under the vehicle
where the HCV linkage is attached.
2. Determine the location of the linkage end mounted to the vehicle’s axle so that
when the linkage is connected to the control arm of HCV proper ride height can
be achieved.
3. Install fittings in valve before mounting to vehicle if possible. Haldex recommends
fittings with pre-applied sealing compound. If they are not available use a drop of oil
or threadlocker. DO NOT use teflon tape or pipe sealing compound.
4. Mount the Type CR HCV to the vehicle frame or a mounting bracket.
5. a) Connect air line from air springs to the center port. (Figure 2)
b) Connect air line from the air supply to the bottom port. (Figure 2)
c) The top port is ALWAYS the exhaust port. Install the supplied exhaust fitting
to top port and slip the exhaust hose over the exhaust fitting. (Figure 2)
6. Air up the vehicle and check all fittings for leaks.
7. Raise the suspension by moving the control arm of the Height Control Valve up.
Either place spacer blocks between the frame and axle or jack stands between the
vehicle frame and ground. (Figure 3 and 4)
CAUTION: Spacer blocks or jack stands must be of sufficient strength to support
vehicle.
INSTALLATION INSTRUCTIONS (cont’d)
NOTE: The spacer blocks or jack stands should be at a height which will allow
the vehicle to come to rest on them at the correct ride height of the suspension
With spacer blocks or jack stands in position, lower the vehicle by moving the
control arm of the valve down and deflate all air from the air springs and system.
Recheck for proper ride height.
NOTE: It may be necessary to shim spacer blocks or jack stands to achieve the
proper ride height.
8. Once proper ride height has been achieved, move control arm on Height Control
Valve to a 45º “down” position for 10-15 seconds. Return the control arm slowly to
the center position. Then insert the wood locating pin into the adjusting block and
bracket on valve.
9. Loosen the 1/4” adjusting lock nut on the adjusting block of Height Control Valve.
With the suspension at ride height and the HCV control arm at the center position,
install a linkage from the control arm to the pre-determined location (Step 2) for the
linkage connection to the vehicle’s axle.
NOTE: If the linkage is not long enough, loosen and rotate the valve or
replace the linkage.
10. Retighten the 1/4” adjusting lock nut at the adjusting block to 24-48 in.lbs.
11. Remove the wood locating pin that was installed in Step 7. To remove the spacer
blocks or jack stands disconnect the linkage at the vehicle’s axle and move the
control arm up. Then remove the spacer blocks or jack stands and reconnect the
linkage. The suspension will return to and maintain the proper ride height.
12. If proper ride height is not obtained or air springs do not inflate properly, check air
pressure, check for proper piping and/or repeat Steps 6-10. As a final check, soap
spray test all air line connections for air leaks and verify that all fasteners are tight.
If unit is still not functioning properly, contact Haldex Technical Services.
PERIODIC AIR CONTROL MAINTENANCE
Drain all moisture from air reservoir at regular intervals. Normal air system
maintenance should be practiced.
The air filter in the Haldex Pressure Protection Valve is removable and can be
cleaned or replaced, if necessary.
Linkage
Block Height
Lower Bracket
Type CR HCV
Ride
Height
Figure 1. Specification Diagram
Figure 2. Features of Type CR HCV
Figure 3. Block Height
Figure 5. Single CR HCV Piping Diagram
Figure 6. Dual CR HCV Piping Diagram
1/4” Adjusting
Lock Nut
BREAK OFF AT
LINE FOR SHORT
ARM APPLICATION
Locating Pin
Manufactured
Date Code
IN From Air
Supply
OUT To Air
Spring
EXHAUST
INTAKE
(UP)
EXHAUST
(DOWN)
These Additional Parts Available From Haldex
Will Enable You To:
Add a suspension dump feature to your truck or trailer.
Part No. Description
90554902 . . .Normally Closed Dump Valve for “Auto Dump” Installations
90554335 . . .Normally Open Dump Valve for Manual Dump Installations
90554615 . . .For Remote Mounted “Auto” or Manual Dump Installations
90054088 . . .For Switch To Pilot Manual Dump Valves
Upgrade your Pressure Protection Valve to include an inline filter.
Part No. Description
90554107 . . .PPV With Inline Filter
Weigh your vehicle.
Part No. Description
42123039 . . .SM130 Economic Pressure Gauge and Decal
42123040 . . .SM140 Robust Pressure Gauge and Decal; Mounted in a
Weatherproof Fiberglass Box
Commercial Vehicle Systems
North American Sales Division
10707 N.W. Airworld Drive
Kansas City, MO 64153-1215
Phone: [phone]
Fax: [phone]
Commercial Vehicle Systems
Haldex Limited
500 Pinebush Road, Unit #1
Cambridge, ON N1T 0A5
Phone: [phone]
Fax: [phone]
L31177 US Rev. 2/10 ART ONLY
Figure 7. Height Control Valve Chart
Part Number Fittings Provided Control Arm
90054007 1/4” Tube Compression Long
90054113 1/4” Tube Compression Short
90554183 3/8” Tube Compression Long
90054549 3/8” Tube Compression Short
90554147 1/8” NPT W/O Adaptors Long
90554114 None Long
Ride
Height
Type CR
Controlled
Response
Height Control
Valve
L31177 Rev. 2/10