NHTSA ID Number: 10189433
Manufacturer Communication Number: MGM Catalogue
TSB/Document Date: 2021-03-29
Summary
MGM Brakes catalogue
• Epoxy-Coated Head, Non-Pressure Chamber
and Lower Push-Rod Assembly
• Epoxy Coated Return Spring
• Center Hole Shield
• Square Port Bosses (Long Stroke Identification)
• Weatherseal™ Plug
• Heavy-Duty 8-Gauge Steel Non-Pressure Chamber
(Type 3030 Models) - (9 gauge on all other sizes)
• Polymer Push-Rod Guides
• Heavy-Duty Nylon Reinforced Diaphragms
• Heavy-Duty Nylon Reinforced Neoprene Diaphragms (Optional)
• Stroke Alert
• Externally Stored Release Bolt
• 3” (76.2 mm) Long Stroke
• Molded Nitrile Rubber Air Seal
• External Breather Tube
• Epoxy-Coated Piston & Center Case - Inside & Out
• Heavy-Duty Power Spring 145 lb (65.8 kg) additional parking
brake force @ 1.25 inches (31.8 mm) of stroke
• Composite Guide - Corrosion Fighter Technology
(patent pending)
P/N Series
3527
3534
Model
TR2430LP3TSHD
TR3030LP3TSHD
Size
2430
3030
Stroke
3.00” (76.2 mm)
3.00” (76.2 mm)
P/N Combination SAE
3527051
3534051
P/N Neoprene Diaphragm
3527851
N/A
P/N Welded Yoke (2.25”)
3527951
3534951
P/N Piggyback Plus Kit SAE
N/A
N/A
P/N Combination METRIC
3527049
3534049
Wt.Combination
19.5 lb (8.8 kg)
20.4 lb (9.3 kg)
Wt. Single
N/A
N/A
A
10.19” (258.8mm)
9.99” (253.7 mm)
B
7.81” (198.4 mm)
7.61” (193.3 mm)
C
7.38” (187.5 mm)
8.32” (211.3 mm)
D
8.21” (208.5 mm)
8.21” (208.5 mm)
E
Welded Yoke Chamber
1.3”(33 mm)
Y
Y = 2.25”
For more welded yoke choices, see page 104.
4.75” (120.7 mm)
F
5/8” - 11 UNC (M16 x 1.5 - 6g)
G
5/8” - 18 UNF (M16 x 1.5 - 6g)
Inlets
3/8” - 18 NPTF (M16 x 1.5 - 6H)
X - Min. (in the caged position)
8.00” (203.2 mm)
Note: Product information and specifications subject to change without notice.
44
TR-LP3TSHD
Long Stroke Model
P/N Series
Model
3527
3534
TR2430LP3TSHD
TR3030LP3TSHD
1
Kit - NP Chamber (a)
9015215
9015218
2
Kit - Nuts & Bolts
9003001
9003001
3
Clamp Band Assembly
8216025
8216045
4
Diaphragm
8017424
8017830
5
Kit - Push-Rod Assembly (a) SAE
9064006
9064008
5a
Kit - Push-Rod Assembly (a) METRIC
9064027
9064028
6
Return Spring
8068012
8068012
7
Kit - Center Hole Shield
9065002
9065002
8
NP Chamber Assembly (a)
9015213
9015122
9
Kit - Nuts & Washers SAE
9002001
9002001
9a
Kit - Nuts & Washers METRIC
9002002
9002002
10
Hex Nut - Yoke SAE
8130004
8130004
10a
Hex Nut - Yoke METRIC
8130016
8130016
11
Kit - Weatherseal™ Plug
9019005
9019005
12
Kit - Release Bolt
9007003
9007003
13
Kit - Breather Tube
9081001
9081001
OPTIONAL ITEMS - For additional replacement parts, refer to Section 12
Yoke & Welded Yoke Assemblies
Refer to Replacement Parts Section 12
Boot & Retainer
Refer to Replacement Parts Section 12
Note: (a) To ensure correct stroke alert positioning, these kits must be used only on the designated MGM Brake units.
11
12
13
2
3
4
Center Hole Diaphragm
(U.S. Patent #5,507,217)
Patented feature that aligns the piston,
diaphragm, power spring and internal push-rod
providing the following advantages: Maintains
component alignment; reduces power spring
stress; reduces coil clash; increases center-seal
life and eliminates the effects of severe vibration.
5/5a
1
6
7
8
9/9a
10/10a
Note: Product information and specifications subject to change without notice.
45
DOUBLE DIAPHRAGM - 3” LONG STROKE
Replacement Parts
TR-LP3TSHDW
Long Stroke Model
Combination
Piggyback Plus Kit
VMRS# 13-004-000
D
VMRS# 13-004-001
DOUBLE DIAPHRAGM - 3” LONG STROKE
B
N/A
A
X
C
E
F
G
TR-LP3TSHDW Model Features
• Tamper Resistant Design
• Center Hole Diaphragm
(U.S. Patent No. 5,507,217)
• Epoxy-Coated Head, Non-Pressure Chamber
and Lower Push-Rod Assembly
• Epoxy Coated Return Spring
• Center Hole Shield
• Square Port Bosses (Long Stroke Identification)
• Weatherseal™ Plug
• Heavy-Duty 8-Gauge Steel Non-Pressure Chamber
• Polymer Push-Rod Guides
• Heavy-Duty Nylon Reinforced Diaphragms
P/N Series
3545
Model
TR3030LP3TSHDW
Size
3030
Stroke
3.00” (76.2 mm)
P/N Combination SAE
3545051
P/N Neoprene Diaphragm
N/A
P/N Welded Yoke (2.25”)
3545951
P/N Piggyback Plus Kit SAE
N/A
P/N Combination METRIC
3545049
Wt. Combination
20.4 lb (9.3 kg)
Wt. Single
N/A
A
9.99” (253.7 mm)
B
7.61” (193.3 mm)
C
8.32” (211.3 mm)
D
8.21” (208.5 mm)
E
4.75” (120.7 mm)
• Heavy-Duty Nylon Reinforced Neoprene Diaphragms (Optional)
• Stroke Alert
• Externally Stored Release Bolt
• 3” (76.2 mm) Long Stroke
• Molded Nitrile Rubber Air Seal
• External Breather Tube
• Epoxy-Coated Piston & Center Case - Inside & Out
• Heavy-Duty Power Spring 145 lb (65.8 kg) additional parking brake
force @ 1.25 inches (31.8 mm) of stroke
• Weld Reinforced Non-Pressure Housing with Welded Bolts
• Composite Guide - Corrosion Fighter Technology
(patent pending)
F
5/8” - 11 UNC (M16 x 1.5 - 6g)
G
5/8” - 18 UNF (M16 x 1.5 - 6g)
Inlets
3/8” - 18 NPTF (M16 x 1.5 - 6H)
X - Min. (in the caged position)
8.00” (203.2 mm)
Welded Yoke Chamber
1.3”(33 mm)
Y
Y = 2.25”
For more welded yoke choices, see page 104.
Note: Product information and specifications subject to change without notice.
46
TR-LP3TSHDW
Long Stroke Model
Replacement Parts
P/N Series
3545
TR3030LP3TSHDW
Kit - NP Chamber (a)
9015905
2
Kit - Nuts & Bolts
9003001
3
Clamp Band Assembly
8216045
4
Diaphragm
8017830
5
Kit - Push-Rod Assembly (a) SAE
9064008
5a
Kit - Push-Rod Assembly (a) METRIC
9064028
6
Return Spring
8068012
7
Kit - Center Hole Shield
9065002
8
NP Chamber Assembly (a)
9015259
9
Kit - Nuts & Washers SAE
9002001
9a
Kit - Nuts & Washers METRIC
9002002
10
Hex Nut - Yoke SAE
8130004
10a
Hex Nut - Yoke METRIC
8130016
11
Kit - Weatherseal™ Plug
9019005
12
Kit - Release Bolt
9007003
13
Kit - Breather Tube
9081001
OPTIONAL ITEMS - For additional replacement parts, refer to Section 12
Yoke & Welded Yoke Assemblies
Refer to Replacement Parts Section 12
Boot & Retainer
Refer to Replacement Parts Section 12
- 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...
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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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