April 21, 1995
EW-136
(c-8340)

SUBJECT: Defective Hyatt Certificate No. 6B Roller Bearings UTCX 49085, 49090, 49092-49097 and 49099-49146
and UNPX 124151-124186

File: MMC-EW
(c-8340)

TO MEMBERS AND PRIVATE CAR OWNERS

Two member railroads have reported hotbox setouts of recent vintage roller bearings manufactured by Hyatt Manufacturing.

The car builder, manufacturer and roller bearing mounting shop have identified 92 recently built pellet hoppers cars equipped with a total of 720 suspect bearings. AAR is investigating the problem with the manufacturer. In the interim, we have decided to err on the side of safety and remove all Hyatt Certificate #6B roller bearings in the above listed cars from interchange service. Do not remove roller bearings with other certificate #s except for Field Manual Rule 36 defects.

BEARINGS IN INTERCHANGE CARS LISTED ABOVE

Early Warning 136 is being assigned Severity Level A (Stop Car Load or Empty, DO NOT MOVE: contact owner) in accordance with Exhibit AA of the UMLER Specification Manual. Replace the wheelsets using Why Made Code 25 (owners request) for the roller bearings and Why Made Code 11 (unless defects are found) for the wheels and axle. Bill the car owner through normal AAR billing procedures.

Your wheel shop (system or contract) should leave the roller bearings on the axle and contact Mr. Peter Wallack, Vice President, Hyatt Manufacturing at (908) 687-2900, FAX: (908) 687-2994 for disposition of the removed bearings. In addition to car initial and number, why made code and repair date per Rule 41.E.20, please mark the bearing cups with the wheel location under the car
(R-1, L-4, etc.) and EW-136 with crayon at the time of wheelset removal.

Repairing lines are requested to attach all condemnable (per Rule 37) adapters to the wheelset journal when returning the wheelset to the wheelshop.

Report repaired cars to Mr. John Kieres, Manager of Railroad Relations & Accounting, Union Tank Car Company at (312) 431-5084, FAX: (312) 347-5780 and he in turn will update the UMLER file to remove the car from the Early Warning list.

Early Warning Letter 136 will expire as of June 30, 1995.

BEARINGS IN SERVICE STOCK AT WHEEL SHOPS, ROLLER BEARING MOUNTING FACILITIES & CAR REPAIR FACILITIES

Remove from service stock and contact Mr. Wallack of Hyatt Manufacturing for disposition.

Sincerely,

Pat T. Ameen