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MTA 
Suspensions

OVERVIEW
SPECIFICATIONS
INSTALLATION DRAWINGS

MTA 
Suspensions

Advanced technology in the MTA™ trailer suspension system sets new standards in ride, handling, tire life and durability. Exhaustive modeling, analysis and prototyping have led to an innovative structure and manufacturing process which has been validated in the laboratory, on independent proving grounds and in real-world applications. The result is a suspension system that meets the needs of North America’s demanding vocational market. Three top-mount models ranging from 23,000- to 30,000-pound capacities and two recently introduced low-mount models in 25,000- and 30,000-pound capacities optimize performance and weight.



FEATURES & BENEFITS

Increased durability:
  • The innovative axle wrap, with its continuous robotic welds, eliminates high-stress concentrations
  • Large-bore, high-damping shock absorber is tuned to the suspension, allowing for greater control and protection against air spring overextension
Excellent handling and ride quality:
  • The MTA is one of the lightest suspensions in its market segment, allowing for larger payloads
Better braking and tire life:
  • High-damping shock absorber offers 2.5 to 3.5 times the damping force of leading competitors with better tire-to-road contact to improve braking performance and extend tire life
Ease of maintenance:
  • Unique lightweight, stamped brake spider includes a patented, easy-service, bolt-on bushing retainer and allows for service or replacement of components without removing the hub
  • Pivot-and-alignment connection features a unique collar design for simple and convenient axle re-alignment
  • Plug and Play” design for simple installation, designed to fit common installation envelopes on a variety of trailer frames
Integrated design:
  • All elements are designed as part of a fully integrated system to optimize system performance and weight
    • Integrated Meritor genuine axles, from the industry leader and world’s largest manufacturer of trailer axles
    • Variety of brakes and wheel end components optimize weight and improve braking performance
    • Meritor Tire Inflation System (MTIS™) maintains proper and even tire inflation, reducing wear and increasing fuel economy. Standard ThermALERT™ wheel-end heat-sensing technology immediately alerts drivers to overheating wheel ends so that drivers can take preventive action to avoid damage
    • Optional lift kits available


VIDEOS


SPECIFICATIONS

Model Rating (Suspension & Axle) Ride Heights Axle Wall Thickness System Weight Attachment Methods Brake/Wheel-end Options
MTA23T 23,000 lbs. 14” 15” 16” 17” 1/2” 530 lbs. Weld-on and bolt-on Variety of Meritor brakes and wheel-ends
MTA25T 25,000 lbs. 14” 15” 16” 17” 5/8” 562 lbs. Weld-on and bolt-on Variety of Meritor brakes and wheel-ends
MTA30T 30,000 lbs. 14” 15” 16” 17” 3/4” 627 lbs. Weld-on and bolt-on Variety of Meritor brakes and wheel-ends
MTA25L 25,000 lbs. 6.5” 7.5” 9” 12” 14” 15” 16” 17” 19” 5/8” 635 lbs. Weld-on and bolt-on Variety of Meritor brakes and wheel-ends
MTA30L 30,000 lbs. 9” 12” 14” 15” 16” 17” 19” 3/4” 675 lbs. Weld-on and bolt-on Variety of Meritor brakes and wheel-ends

INSTALLATION DRAWINGS

INSTALLATION DRAWING DOWNLOADS
MTA23T MTA25T MTA30T MTA25L MTA30L
Welded Frame (Standard) 5-66240K 5-66733E 5-67623E 5-66733G 5-66733G
Welded Frame (Check Strap) 5-66733J 5-66733J
Bolted Frame 5-66240L 5-66733F 5-67623F 5-66733H 5-66733H
Lift Kit 5-68942
(2 Pages)
5-68942
(2 Pages)
5-68942
(2 Pages)
5-68942A 5-68942A
Bolted Hanger Patterns 5-66241AG
(2 Pages)
5-66241AG
(2 Pages)
5-66241AG
(2 Pages)
5-66241AG
(2 Pages)
5-66241AG
(2 Pages)
ASSEMBLY DRAWING DOWNLOADS
MTA23T MTA25T MTA30T MTA25L MTA30L
Welded Frame (Drum)   5-66241Q
(2 Pages)
5-66734M
(2 Pages)
5-67624H
(2 Pages)
5-66734U 5-66734U
Welded Frame (Disc) 5-66241V 5-66734N 5-67624J 5-66734Y 5-66734Y
Welded Frame (EX22H) 5-66241Y 5-66734S 5-67624K 5-66734W 5-66734W
Bolted Frame (Drum) 5-66241R
(2 Pages)
5-66734P
(2 Pages)
5-67624L
(2 Pages)
5-66734V 5-66734V
Bolted Frame (Disc)  5-66241W 5-66734Q 5-67624M 5-66734Z 5-66734Z
Bolted Frame (EX22H) 5-66241Z 5-66734R 5-67624N 5-66734X 5-66734X
HCV Kit (Autodump) 5-65443BC 5-65443BC 5-65443BC 5-65443BG 5-65443BG
HCV Kit (No Dump) 5-65443BF  5-65443BF  5-65443BF  5-65443BH 5-65443BH
EXPLODED VIEW DOWNLOADS
MTA23T MTA25T MTA30T MTA25L MTA30L
Standard  5-67937G 5-67937H 5-67937J 5-67937K 5-67937K
Check Strap Options 5-67937M 5-67937N
TORQUE CHART DOWNLOADS
MTA23T MTA25T MTA30T MTA25L MTA30L
Welded Frame 4-60559_36 4-60559_36 4-60559_36 4-60559_38 4-60559_38
Bolted Frame 4-60559_37 4-60559_37 4-60559_37 4-60559_39 4-60559_39