NHTSA ID Number: 10189433
Manufacturer Communication Number: MGM Catalogue
TSB/Document Date: 2021-03-29
Summary
MGM Brakes catalogue
ABOUT MGM BRAKES
A Division of Indian
Head Industries
A little bit of history...
Since 1956 when the founders of MGM Brakes invented the spring brake actuator, we have taken our role as a leading world-wide supplier
to the commercial vehicle industry very seriously. From our humble beginnings over 50 years ago when MGM Brakes addressed the safety
challenge of the logging industry in the Pacific northwest, we have earned the reputation as the industry leader in continuous improvement
and innovative, cutting edge actuator products in the commercial vehicle industry. From a simple parking brake in 1956 to Tamper Resistant
(TR) spring brakes of the 1980’s, we moved into the new millennium with the introduction of MGM Brakes e•STROKE®, electronic brake
monitoring system.
The founders of MGM Brakes set a high standard of quality, innovation and safety over fifty years ago - a philosophy that is woven into
the fabric of MGM Brakes. As you learn more about the addition of e•STROKE® to our family of brakes, you will see we are keeping our
founders’ commitment to our customers and the commercial vehicle industry as we embark on another fifty.
Thanks for your continued support for over fifty years. It’s been a great ride and we invite you to come along with MGM Brakes for the next
fifty years and beyond!
Ron Parker
Chairman, President and CEO
Corporate Office
For technical assistance, pricing information or special requests, contact MGM Brakes
Corporate Office:
MGM Brakes
8530 Cliff Cameron Drive
Charlotte, North Carolina 28269-9786
Toll Free Phone (800) 527-1534
Phone: (704) 547-7411
Fax: (704) 547-9367
e-mail: [email protected]
website: www.MGMBrakes.com
ISO 9001:2008
MGM Brakes is an ISO 14001 Company
Visit our website for more information...
www.MGMBrakes.com
Your comprehensive source for MGM Brakes product and company information.
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MGM BRAKES FACILITIES
MGM Brakes
U.S.A. Parts Distribution Center
MGM Brakes
Canadian Parts Distribution Center
1925 E. Chestnut Expressway
Springfield, Missouri 65802
Toll Free Phone: (877) 294-5906
Phone: (417) 862-0092 Local
Toll Free Fax: (877) 294-6316
Fax: (417) 862-7850 Local
e-mail:[email protected]
ISO 9001:2008
1821 Albion Road
Units 12 - 14
Toronto, Ontario M9W 5W8
Toll Free Phone: (877) 294-5906
Phone: (417) 862-0092 Local
Toll Free Fax: (877) 294-6316
Fax: (417) 862-7850 Local
e-mail:[email protected]
MGM Brakes/Springfield PDC is an ISO 14001 Company
Manufacturing Plants
MGM Brakes
Murphy - Manufacturing Plant
MGM Brakes
Cloverdale - Manufacturing Plant
P.O. Box 70
229 Park Avenue
Murphy, North Carolina 28906
Phone: (828) 837-2117
Fax: (828) 837-7521
Toll Free Fax: (800) 258-8117
ISO 9001:2008
P.O. Box 249
1184 South Cloverdale Blvd.
Cloverdale, California 95425
Phone: (707) 894-3333
Fax: (707) 894-5704
Toll Free Fax: (800) 266-5750
ISO 9001:2008
MGM Brakes/Murphy is an ISO 14001 Company
MGM Brakes/Cloverdale is an ISO 14001 Company
International Sales
MGM Brakes
John Dare
Director, International Sales and Marketing
[email protected]
A Division of Indian Head Industries, Inc.
MGM Brakes is an ISO 14001 Company
This catalog is printed on recycled paper.
Note: Product information and specifications subject to change without notice.
1
ORDERING MGM BRAKES
Parts Distribution Center
INDEX
Page(s)
Part Number / Model Designation Charts................................................................................................................. 6-9
Understanding MGM Brakes Part Numbers.................................................................................................................9
INDEX
Section 1: Double Diaphragm Spring Brakes...................................................................................................... 10-29
Corrosion Fighter Technology.....................................................................................................................................12
Industry Safety Reminder - Danger of Double Clamp Banded Spring Brakes...........................................................13
Standard Stroke Models
TR
Tamper Resistant..................................................................................................................... 14-15
TR-HD
Tamper Resistant, Heavy-Duty................................................................................................ 16-17
TR-T
Tamper Resistant, Tube........................................................................................................... 18-19
TR-THD
Tamper Resistant, Tube, Heavy-Duty...................................................................................... 20-21
TR-THDW
Tamper Resistant, Tube, Heavy-Duty, Welded NPC................................................................ 22-23
TR-TS
Tamper Resistant, Tube, Severe Service................................................................................. 24-25
TR-TSHD
Tamper Resistant, Tube, Severe Service, Heavy-Duty............................................................ 26-27
TR-TSHDW
Tamper Resistant, Tube, Severe Service, Heavy-Duty, Welded NPC..................................... 28-29
Section 2: Double Diaphragm Spring Brakes...................................................................................................... 30-47
Long Stroke Models
TR-LP3
Tamper Resistant, Long Stroke............................................................................................... 32-33
TR-LP3HD
Tamper Resistant, Long Stroke, Heavy-Duty........................................................................... 34-35
TR-LP3T
Tamper Resistant, Long Stroke, Tube..................................................................................... 36-37
TR-LP3THD
Tamper Resistant, Long Stroke, Tube, Heavy-Duty................................................................. 38-39
TR-LP3THDW Tamper Resistant, Long Stroke, Tube, Heavy-Duty, Welded NPC.......................................... 40-41
TR-LP3TS
Tamper Resistant, Long Stroke, Tube, Severe Service........................................................... 42-43
TR-LP3TSHD
Tamper Resistant, Long Stroke, Tube, Severe Service, Heavy-Duty...................................... 44-45
TR-LP3TSHDW Tamper Resistant, Long Stroke, Tube, Severe Service, Heavy-Duty, Welded NPC................ 46-47
Section 3: Long-Life Double Diaphragm Spring Brakes...................................................................................... 48-57
Standard Stroke Model
LTR-T
Integral Release Bolt, Tamper Resistant, Tube........................................................................ 50-51
Long Stroke Model
LTR-L3
Integral Release Bolt, Tamper Resistant, Long Stroke............................................................ 52-53
LTR-L3W
Integral Release Bolt, Tamper Resistant, Long Stroke, Welded NPC..................................... 54-55
LTR-L3T
Integral Release Bolt, Tamper Resistant, Long Stroke, Tube.................................................. 56-57
Note: Product information and specifications subject to change without notice.
2
INDEX
Page(s)
Section 4: Piston Spring Brakes................................................................................................................................................58-67
Standard Stroke Model
MJS Magnum J-Series, 1.75” Stroke, Tube.................................................................................................................60-61
Long Stroke Model
MJS Magnum J-Series, 3.00” Stroke, Tube.................................................................................................................62-67
Section 5: Service Chambers....................................................................................................................................................68-77
Standard Stroke Model
C S Cam.................................................................................................................................................................70-71
Long Stroke Models
CL S Cam, Long Stroke............................................................................................................................................72-73
CS S Cam, Long Stroke, Sealed...............................................................................................................................74-75
Wedge Model
CW Wedge.................................................................................................................................................................76-77
INDEX
Section 6: Wedge Spring Brakes..............................................................................................................................................78-85
CW Wedge Service Chamber....................................................................................................................................80-81
MJW
MJW1216AT Magnum J-Series, Wedge 1.75” (44.5 mm)..................................................................................82-83
MJW MJW1616AT Magnum J-Series, Wedge 1.75” (44.5 mm)................................................................................82-83
MJW MJW1624BT Magnum J-Series, Wedge 2.00” (50.8 mm)..................................................................................84-85
Section 7: Air Disc Brakes.........................................................................................................................................................86-93
TR Series Standard Stroke Model
TR-T Tamper Resistant, Tube......................................................................................................................................88-89
TR-THD Tamper Resistant, Tube, Heavy-Duty..................................................................................................................88-89
MJB Series Long Stroke Model
MJB Magnum J-Series, 3.00” Stroke, Tube................................................................................................................90-91
Service Chambers
C Service Chambers...............................................................................................................................................92-93
CS Service Chambers, Sealed..................................................................................................................................92-93
Note: Product information and specifications subject to change without notice.
3
INDEX
Page(s)
Section 8: Remote Mount Cylinders................................................................................................................................................ 94-99
Standard Stroke Models
R4A
Remote Mount Cylinder.................................................................................................................................................. 96-97
R5AHD Remote Mount Cylinder, Heavy-Duty.............................................................................................................................. 96-97
R7A
Remote Mount Cylinder, Spring Applied - Air Release ................................................................................................... 98-99
R8H
Remote Mount Cylinder, Spring Applied - Hydraulic Release......................................................................................... 98-99
Section 9: Vocational..................................................................................................................................................................... 100-105
Model Application Chart........................................................................................................................................................................ 102
Neoprene Diaphragm Chart................................................................................................................................................................. 103
Truck Specific - Welded Yoke Guide.................................................................................................................................................... 104
Welded Yoke Advertisement................................................................................................................................................................. 105
Section 10: Special Applications................................................................................................................................................... 106-113
TR, TR-T, TR-TS and MJS Transit Bus Brakes and Other Special Applications.................................................................................. 108
Actuators Manufactured with Neoprene Diaphragms........................................................................................................................... 109
Welded Yoke Application Guide......................................................................................................................................................110-111
Actuators Manufactured with both SAE and Metric Parts......................................................................................................................112
INDEX
Section 11: e•STROKE® – Brake Monitoring System................................................................................................................... 114-127
The Next Generation - Overview e•S3®......................................................................................................................................... 116-117
e•STROKE for Air Disc.................................................................................................................................................................. 118-119
e•S3® Diagnostics.................................................................................................................................................................................120
e•S3® System Specifications................................................................................................................................................................121
e•STROKE® System Parts e•S3® Tractor/Truck/Bus....................................................................................................................122-124
e•STROKE® System Parts - Trailer Parts List.............................................................................................................................124-125
e•STROKE® System Parts Tractor/Truck/Bus - Gen 1 and 2, Miscellaneous Parts......................................................................126-127
Section 12: Replacement Parts.................................................................................................................................................... 128-135
Kits - Breather Cap, End Cap & Weatherseal™ Plug.......................................................................................................................... 130
Diaphragms, Kit - Release Bolt, Clamp Bands.................................................................................................................................... 130
Vent Hole - Plug, Kits - S-Cam Protective Boots & Center Hole Shield............................................................................................... 131
Kits - Nuts and Washers, Breather Tube and Elbow Kit....................................................................................................................... 131
Non-Pressure Chamber (With and Without Breather Elbow)............................................................................................................... 131
Welded Yoke Assemblies..................................................................................................................................................................... 132
Welded Yoke Assemblies(continued), Yoke Pins (Stainless Steel)...................................................................................................... 133
Yoke Assemblies, Yoke Assemblies - 2 Pin.......................................................................................................................................... 134
Push-Rod Assembly and Nut Kits......................................................................................................................................................... 135
Note: Product information and specifications subject to change without notice.
4
INDEX
Page(s)
Section 13: Technical Information................................................................................................................................................. 136-161
MJS Service Diaphragm Replacement................................................................................................................................................. 138
Hexavalent Chromium Replacement.................................................................................................................................................... 139
.Product Identification Plate - Old Version............................................................................................................................................. 140
P
. roduct Identification Plate - New Version........................................................................................................................................... 141
Long Stroke Identification..................................................................................................................................................................... 142
Double-Diaphragm to Piston Conversion Chart................................................................................................................................... 143
Procedure to Cut a Push-Rod.............................................................................................................................................................. 144
Proper Brake Adjustment...................................................................................................................................................................... 145
Fastener Torque Value Chart................................................................................................................................................................ 146
Procedure to Lengthen External Breather Tube................................................................................................................................... 147
Mixing Standard and Long Stroke Chambers....................................................................................................................................... 148
Field Replacement of Chambers Equipped with “Welded” Yokes........................................................................................................ 149
Performance Chart - Spring Brake Chambers (including Remote Mount Cylinders) - SAE.......................................................... 150-153
Performance Chart - Service Brake Chambers - SAE................................................................................................................... 154-155
Performance Chart - Spring Brake Chambers (including Remote Mount Cylinders) - METRIC................................................... 156-159
Performance Chart - Service Brake Chambers - METRIC............................................................................................................ 160-161
Section 15: Warranty Policies........................................................................................................................................................ 164-169
Standard Warranty Policy..................................................................................................................................................................... 166
LTR-T “Long Life” Warranty Policy........................................................................................................................................................ 167
e•STROKE® Warranty Policy................................................................................................................................................................ 168
Section 16: Glossary of Terms....................................................................................................................................................... 170-176
KEY TO MODEL “PREFIXES”
KEY TO MODEL “SUFFIXES”
C = SERVICE CHAMBER
A = 1.75” (44.5 mm) STROKE (MAGNUM PERFORMANCE PLUS)
CS = SERVICE CHAMBER / SEALED
B = 2.00” (50.8 mm) STROKE
CW = SERVICE CHAMBER / WEDGE
C = 2.25” (57.1 mm) STROKE
LTR = INTEGRAL RELEASE BOLT / TAMPER RESISTANT
D = 2.50” (63.5 mm) STROKE
M = MAGNUM
E = 3.00”(76.2 mm) LONG STROKE (MAGNUM PERFORMANCE PLUS)
MJB = MAGNUM PERFORMANCE PLUS / AIR DISC TYPE
ESH = UNIT EQUIPPED WITH E-STROKE
MJS = MAGNUM PERFORMANCE PLUS / S-CAM TYPE
G = G-SERIES
MJW = MAGNUM PERFORMANCE PLUS / WEDGE
H = HYBRID
TR = TAMPER RESISTANT
HD = HEAVY DUTY
W = WEDGE
L = LONG STROKE
L3 = 3.00” (76.2 mm) LONG STROKE CHAMBER
LP3 = 3.00” (76.2 mm) LONG STROKE / LOW PROFILE
S = SEVERE SERVICE
T = TUBE
W = WELDED MOUNTING BOLTS
Note: Product information and specifications subject to change without notice.
5
INDEX
Section 14: BrakeTECH Self-Study Training Program................................................................................................................. 162-163
PART NUMBER / MODEL DESIGNATION
P/N Series
Model
Stroke inch (mm)
Part Description
Page Number(s)
PART NUMBER / MODEL DESIGNATION
Obsolete
Replaced By
X
1617
SERVICE CHAMBERS
1009
CW9
1.75” (44.5 mm)
Wedge Service
76-77, 80-81
1012
CW12
1.75” (44.5 mm)
Wedge Service
76-77, 80-81
1016
CW16
1.75” (44.5 mm)
Wedge Service
76-77, 80-81
1412
C12
1.75” (44.5 mm)
CAM Service
70-71
1416
C16
2.25” (57.1 mm)
CAM Service
70-71
1417
C16L
2.50” (63.5 mm)
CAM Service
•
1418
C16L2.5
2.50” (63.5 mm)
CAM Service
72-73
1420
C20
2.25” (57.1 mm)
CAM Service
70-71
1421
C20L
2.50” (63.5 mm)
CAM Service
72-73
1427
C24L
2.50” (63.5 mm)
CAM Service
70-71
1428
C24L3
3.00” (76.2 mm)
CAM Service
72-73
1430
C30
2.50” (63.5 mm)
CAM Service
70-71
1431
C30L3
3.00” (76.2 mm)
CAM Service
72-73
1436
C36
3.00” (76.2 mm)
CAM Service
70-71
1617
CS16LH
2.50” (63.5 mm)
CAM Service
74-75
1621
CS20L
2.50” (63.5 mm)
CAM Service
74-75
1623
CS20L3
3.00” (76.2 mm)
CAM Service
74-75
1627
CS24L
2.50” (63.5 mm)
CAM Service
74-75
1628
CS24L3
3.00” (76.2 mm)
CAM Service
74-75
1630
CS30
2.50” (63.5 mm)
CAM Service
74-75
1631
CS30L3
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
- Ideal for hydraulic and disc brakes
- Provides an extra margin of safety in extreme braking...
- Mix of polyglycol ethers ensures hot brake-system operation...
- Excellent for ABS
, disc and drum brake systems - Delivers braking power when needed by avoiding a spongy...
- Both wet and dry boiling points exceed the minimum...
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
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TSB/Document ID: MGM Catalogue
Replacement Service Bulletin Number:
MFR Communication Date: 2017-12-05
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES, HYDRAULIC
MFR Component System:
MFR Component Subsystem:
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Last update on 2026-07-02 / Affiliate links / Images from Amazon Product Advertising API
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