AAR Technical Services

Technical Services Working

Arbitration & Rules

Asset Health Strategy

Brake Systems

Car Repair Billing

Coupling System & Truck Castings

Damage Prevention & Freight Claim

Equipment Engineering

Equipment Health Monitoring



Locomotive Repair Billing & Interchange Rules

Open Top Loading Rules

Quality Assurance Committee

Specially Equipped Freight Car

Wheels, Axles, Bearings & Lubrication

Coupling System & Truck Castings Committee

This committee developments and monitors the specifications and processes for casting freight car components, including problem resolution to casting problems which arise. The CSTCC committee manager can answer questions concerning design and manufacturing of couplers, side frames, bolsters, casting design and testing approval, foundry approval, coupler and truck reconditioner approval, and freight car and castings fatigue

Daniel Gutscher

Manager, Coupling System & Truck Castings Committee

Transportation Technology Center, Inc

55500 DOT Road Pueblo, CO 81001

Phone: 719-584-0500 | FAX: 719-585-1895 | email: daniel_gutscher@aar.com



AAR Member Railroads

UP (Chair)


Associate Members

McConway and Torley (Vice Chair)
Amsted Rail





Field Manual

RULE 16 - Couplers, Type E and Parts

RULE 17 - Couplers, Type E-F and Parts

RULE 18 - Couplers, Type F and Parts

RULE 19 - Yokes, Type E

RULE 20 - Yokes, Type E-F and F

RULE 22 - Uncoupling Levers

RULE 47 - Truck Bolsters

RULE 48 - Truck Side Frames, Transoms, and Spring Planks

RULE 82 - Welding and Associated Heat Treatment

Manual of Standards and Recommend Practice

Section S Casting Details
Section S Part II Truck Details and Casting Codes
Section S Part III Coupler and Yoke Details