Haldex Modular Trailer System Supplement
INSTALLATION/SERVICE
MANUAL
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS) L31293W
“Patent Pending”
Product Options
The Haldex Modular Trailer System (HMTS) with Brake Monitoring System (BMS) was designed to
be used on Straight Rail or Drop Deck Single Axle Trailers.
Safety First
This manual describes the correct installation process for the Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS). Care must be taken during each phase of the installation in
order to ensure the system is installed and working properly.
Please follow your company’s safety procedures at all times when installing this equipment.
Be sure that you understand all instructions before you begin.
Remove all air pressure and electrical power from the brake system before beginning work.
Handling Requirements
The Haldex Modular Trailer System (HMTS) with Brake Monitoring System (BMS) requires proper
handling prior to and during installation. The HMTS should NEVER be lifted by way of tubing,
electrical cables or any components. Lifting MUST only be done by way of the panel itself or the
two attached I-beam brackets. Failure to do so may result in loose components and subsequent
leakage, leading to panel function degradation or failure.
Questions?
If you have any questions on this product or any of the innovative products offered by Haldex,
contact your local distributor for complete details. Technical Service or Troubleshooting help can
be obtained by calling Haldex Technical Services Department at 800-643-2374, Press 2.
Important Notices
The products described within this literature, including without limitation, product features,
specifications, designs, availability and pricing are subject to change by Haldex and its subsidiaries at any
time without notice. This document and other information from Haldex, its subsidiaries and authorized
distributors provide product and/or system options for further investigation by users having technical
expertise. It is important that you analyze all aspects of your application and review the information
concerning the product or system, in the current literature or catalog. Due to the variety of operating
conditions and applications for these products or systems, the user, through their own analysis and
testing, is solely responsible for making the final selection of the products and systems and assuring that
all performance, safety and warning requirements are met.
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
Table of Contents
Specifications - Drop Deck.......................................................................................2
Specifications - Straight Rail....................................................................................4
I-Beam Mounting .....................................................................................................6
Components - Curb Side .........................................................................................8
Components - Road Side .........................................................................................9
Plumbing and Wiring - Curb Side...........................................................................10
Plumbing - Road Side..............................................................................................11
Air System and Electrical Test .................................................................................12
End of Line and PM Test .........................................................................................13
©2017 All Rights Reserved
Material may only be reproduced with the written permission of Haldex.
Section Page
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 1
Additional Information
Installation and Troubleshooting Guides
available on the Haldex website.
Anti-Lock Braking Systems (ABS)
Installation/Service Manual (L30041)
https://www.haldex.com/globalassets/
north-america/documents/abs/l30041.pdf
Brake Monitoring System (BMS-1)
Installation/Service Manual (L31250W)
https://www.haldex.com/globalassets/
north-america/documents/abs/l31250W
Intelligent Trailer Control Module (ITCM)
Installation/Service Manual (L31286W)
https://www.haldex.com/globalassets/
north-america/documents/l31286W.pdf
Brake Monitoring System (BMS)
Installation/Service Manual (L31290W)
https://www.haldex.com/globalassets/
north-america/documents/l31290W.pdf
Drop Deck Trailer
Haldex Modular Trailer System (HTMS)
Specications - Drop Deck
PAGE 2
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
Curb Side View
The Haldex Modular Trailer System (HMTS) must
be located behind the Air Reservoir with protective
shield in front. Center Haldex Modular Trailer
System (HMTS).
OC = On Center
Front of Trailer
Trailer Floor Deck
Suspension Box
30” 16” OC 16” OC 16” OC
10 1/2” min.
Required
Protective
Shield
Haldex Modular
Trailer System
(HMTS)
Air
Reservoir
Haldex Modular Trailer System (HMTS) Drop Deck Trailer
Service/Control Air Line Diameter (O.D.): Front Gladhand to Module - 3/8” Tubing (Blue)
Emergency/Supply Air Line Diameter (O.D.): Front Gladhand to Module - 1/2” Tubing (Red)
Service/Control Air Line Diameter (O.D.): Module to Rear Gladhand - 1/2” Tubing (Blue)
Emergency/Supply Air Line Diameter (O.D.): Module to Rear Gladhand - 1/2” Tubing (Red)
Protective Metal Shield is required in Min. Height 10 1/2”
front of reservoir:
I-Beam Requirements: Height: 3 1/2” - 4”
Width: 2 1/4”
Thickness: 1/8”
I-Beams on 16” Center +/- 1/4”
Technical Information
PAGE 3
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
Curb Side View
Haldex Modular Trailer System (HTMS)
Specications - Drop Deck (cont’d)
Mounting Clamps
to I-Beam
(Ground) (Ground)
Note: This side faces Curb Side and this edge will
be facing toward the ground.
Curb Side View
Front of Trailer
Drop Deck Trailer
3 1/2 - 4”1/8”
2 1/4”
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 4
Straight Rail Trailer
Haldex Modular Trailer System (HTMS)
Specications - Straight Rail
Curb Side View
The Haldex Modular Trailer System (HMTS) must
be located behind the Air Reservoir. Center Haldex
Modular Trailer System (HMTS).
OC = On Center
Trailer Floor Deck
Suspension Box
6” 12” OC 12” OC 12” OC 12” OC
Air Reservoir
27”
Haldex Modular Trailer System
(HMTS)
Front of Trailer
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 5
Haldex Modular Trailer System (HMTS) Straight Rail Trailer
Service/Control Air Line Diameter (O.D.): Front Gladhand to Module - 3/8” Tubing (Blue)
Emergency/Supply Air Line Diameter (O.D.): Front Gladhand to Module - 1/2” Tubing (Red)
Service/Control Air Line Diameter (O.D.): Module to Rear Gladhand - 1/2” Tubing (Blue)
Emergency/Supply Air Line Diameter (O.D.): Module to Rear Gladhand - 1/2” Tubing (Red)
Protective Metal Shield is required in Min. Height 10 1/2”
front of reservoir:
I-Beam Requirements: Height: 3 1/2” - 4”
Width: 2 1/4”
Thickness: 1/8”
I-Beams on 12” Center +/- 1/4”
Technical Information
Curb Side View
Haldex Modular Trailer System (HTMS)
Specications - Straight Rail (cont’d)
Mounting Clamps
to I-Beam
(Ground) (Ground)
Note: This side faces Curb Side and this edge will
be facing toward the ground.
Curb Side View
Front of Trailer
Straight Rail Trailer
3 1/2 - 4”1/8”
2 1/4”
Haldex Modular Trailer System (HTMS) -
I-Beam Mounting
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 6
Step 1 Chock wheels.
Step 2 Drain tank.
Step 3 Remove existing panel.
Step 4 Place inner mounting brackets
onto I-Beam.
Step 5 Attach outer brackets to panel
and loosely install 3/8”bolts and
lock washers.
Spread brackets apart.
Step 6 Position Haldex Modular
Trailer System (HMTS) unit
between I-Beams
I-Beam I-Beam
I-BeamI-Beam
Inner Mounting
Brackets
Outer Mounting
Brackets
Bracket
3/8” Weld Nut
Bracket
3/8” Bolt
Module Panel
3/8” Lock
Washer
Center Between I-Beams
Haldex Modular Trailer System (HTMS) -
I-Beam Mounting (cont’d)
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 7
Step 7 Slide outer brackets together
around I-Beams.
Step 8 Insert 3/8” bolts, at washers,
lock washers and nuts. Torque
(4) places 28-32 ft. lb.
Step 9 Center Haldex Modular Trailer
System (HMTS) between
I-Beams and torque (4) places
28-32 ft. lb.
Tighten these bolts last.
Step 10 Attach hoses to appropriate
brake chambers. Do Not Use
teon tape on ttings. Use
liquid thread sealant sparingly
on all ttings. (Loctite PST565
or equivalent.)
I-BeamI-Beam Center Between I-Beams
I-BeamI-Beam Center Between I-Beams
Inner
Bracket
3/8” Lock
Nut
Inner
Bracket
3/8” Lock
Washer
3/8” Bolt
Tighten these
bolts first
Step 11 For plastic ports, hand tighten ttings then rotate 1 to 1 1/2 additional turns.
The maximum torque allowed is 210 in. lb.
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
Haldex Modular Trailer System (HTMS)
Components - Curb Side
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 8
Trailer Module System (TMS)
Height:........................................ 14”
Length: .......................................20”
Weight:....................................... 28 lbs.
Conguration
FFABS Valve: ...............................ITCM
Mounting: ..................................I-Beam (2 1/4” Wide - 16” On Centers)
Fittings:....................................... PTC (Push-To-Connect) Valves and Components
Panel Fasteners: .........................Threaded Nuts 1/4-20 UNC and 5/16-18 UNC
Mounting Bracket Fasteners: ....3/8-16 X 1-1/4 UNC
Technical Information
Haldex Modular
Trailer System
(HTMS) Panel
Haldex
Reservoir
Purge Valve
Mounting
Brackets (2)
ABS
Power
Electronic Control
Unit (ECU)
FFABS Valve Supply Air
Red (IN)
Haldex Modular Trailer System (HTMS)
Components - Road Side
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 9
Trailer Module System (TMS)
Height:........................................ 14”
Length: .......................................20”
Weight:....................................... 28 lbs.
Conguration
FFABS Valve: ...............................ITCM
Mounting: ..................................I-Beam (2 1/4” Wide - 16” On Centers)
Fittings:....................................... PTC (Push-To-Connect) Valves and Components
Panel Fasteners: .........................Threaded Nuts 1/4-20 UNC and 5/16-18 UNC
Mounting Bracket Fasteners: ....3/8-16 X 1-1/4 UNC
Technical Information
Pressure Protection Valve (PPV)
[Supply to Height Control Valve]
One-Way
Check Valve
Service Air
Blue (IN)
Blue (OUT)
Booster Valve
Brake Monitoring System (BMS) Alarm
Haldex Modular Trailer System (HTMS)
Plumbing and Wiring - Curb Side
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 10
Spring Brake Chambers
All 3/8” Hoses
To Rear
Trailer Supply
Red (OUT)
From Front
of Trailer
(Nose) Supply
Red (IN)
Trailer Wiring Harness
3/8”
Tubing
To RPV
Air Reservior
(1488 cu.in. min.)
This connection
MUST be from
the BOTTOM of
the reservoir.
NOTE: To avoid damage to power
connector, use provided zip tie
in this location to secure power
connection to ITCM ECU.
Front of Trailer
Curb Side View
Sensor (1B)
Curb Side
Sensor (1A)
Road Side
Supply Tee Required
(Not Included)
SERVICE/DELIVERY
PARKING
1/2” Tubing
Haldex Modular Trailer System (HTMS)
Plumbing - Road Side
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 11
Front of Trailer
Road Side View
WARNING: External connections, either tubing or electrical,
MUST be made CORRECTLY for proper function of the Haldex
Modular Tailer System (HTMS). Failure to do so could result in
injury or death.
Air Reservior
(1488 cu.in. min.)
This connection MUST be
from the TOP or SIDE of
the reservoir.
Trailer Front Service
Blue (IN)
3/8” Tubing
Trailer Rear Service
Blue (OUT)
1/2” Tubing
Leveling Valve
3/8” Tubing
Supply Port
Haldex Modular Trailer System (HTMS) -
Air System and Electrical Test
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 12
Step 1 Verify Trailer Air System is Functioning Correctly
Charge Emergency (IN) Gladhand (110 - 120 PSI)
Spring brake chambers should release
Air reservoir tank should ll
Air bags should inate after approximately 20 seconds
Check for and correct any Emergency Supply air leaks
Charge Service (IN) Gladhand (110 - 120 PSI)
Service brake chambers should apply
Check for and correct any Service air leaks
Release Service (IN) Gladhand Pressure
Service brakes should release
Release Emergency Supply (IN) Gladhand Pressure
Spring brake chambers should apply (park)
Step 2 Verify Trailer ABS Power
Apply 12 Volts DC to the Blue ABS Pin #7 on the 7-Way Connector and verify
the external mounted Trailer ABS Lamp goes (ON - OFF). The ABS System is okay.
If the Trailer ABS Lamp stays (ON) solid, an ABS fault is present. Refer to
Intelligent Trailer Control Module (ITCM) Installation/Service Manual (L31286W)
for fault code details.
Turn (OFF) Blue ABS Power.
Step 3 Verify Trailer Stoplight Power
Apply 12 Volts DC to the Stoplight Pin #4 on the 7-Way Connector and verify
the external mounted Trailer ABS Lamp goes (ON - OFF). The ABS System is okay.
If the Trailer ABS Lamp stays (ON) solid, an ABS fault is present. Refer to
Intelligent Trailer Control Module (ITCM) Installation/Service Manual (L31286W)
for fault code details.
Haldex Modular Trailer System (HTMS) -
End of Line and PM Test
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 13
Functional Test for Brake Monitoring System (BMS)
All electrical power and air pressure must be removed prior to start of this test.
Step 1 Apply 12 Volts DC to the Blue ABS Pin #7 on the 7-Way Connector
The Brake Monitoring System (BMS) alarm will sound after 15 seconds.
Step 2 Charge the Red (IN) Emergency Gladhand to (110-120 PSI)
The Brake Monitoring System (BMS) alarm will shut off.
NOTE: If the Brake Monitoring System (BMS) alarm continues to sound after
completing Step 2, refer to Brake Monitoring System (BMS) Installation/
Service Manual (L31290W).
Step 3 Apply 12 Volts DC to the Red Stoplight Pin #4 on the 7-Way Connector
The Brake Monitoring System (BMS) alarm will sound after 60 seconds.
Step 4 Charge the Blue (IN) Service Gladhand to (110-120 PSI)
The Brake Monitoring System (BMS) alarm will shut off.
NOTE: If the Brake Monitoring System (BMS) alarm continues to sound after
completing Step 4, refer to Brake Monitoring System (BMS) Installation/
Service Manual (L31290W).
7-Way Connector
Ground Pin
Blue ABS Pin #7
Red Stoplight Pin #4
Haldex Modular Trailer System (HTMS) -
End of Line and PM Test
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 14
Functional Test for Reservoir Purge Valve (RPV)
Step 1 Install Panel System with Reservoir Purge Valve (RPV).
Step 2 Start engine or use shop air to build system pressure in reservoir air
tank to 110 - 120 PSI.
Step 3 Check for any air leaks.
Step 4 Set parking brakes or remove emergency airline from the trailer.
There will be a blast of air coming from the exhaust tube that will last
for about eight seconds. Check for any moisture/contaminates during purge.
Step 5 Repeat Steps 1 through Step 4 for three to ve cycles.
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 15
Notes:
Haldex Modular Trailer System (HMTS)
with Brake Monitoring System (BMS)
Installation/Service Guide (L31293W)
PAGE 16
Notes:
Haldex develops and provides reliable and innovative
solutions with focus on brake and air suspension
products to the global commercial vehicle industry.
Listed on the Stockholm Stock Exchange, Haldex has
annual sales of approximately 3.9 billion SEK and
employs about 2,200 people.
haldex.com
Haldex Brake Products Corporation
10930 N. Pomona Avenue
Kansas City, MO 64153
PH: 816-891-2470
FX: 816-891-9447
Haldex Limited/Haldex Limitée
500 Pinebush Road, Unit 1
Cambridge, ON N1T 0A5 Canada
PH: 519-621-6722
FX: 519-621-3924
L31293W US 6/17 WEB ONLY
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