Housing Securement Welding Procedure
(TCC-45 LTLP)

Remove the top cap assembly from housing prior to welding.

Warning: Do not weld near the top cap assembly.

Warning: Do not weld directly to either Miner housing or top cap.

All surface preparation and welding must comply with AWS D15.1 Railroad Welding Specification – Cars and Locomotives, latest edition. Specification M-214 can be used for more information on preheating.

1. Grind, clean and prepare for welding.

2. For cast pockets, AAR M-214 recommends preheating between 300° F (149° C) and 600° F (315° C), not exceeding 600° F (315° C).

3. Materials

• Type of weld: Flare bevel groove

• Wedge: Cast Steel ASTM-A-27 Grade 65-35

• For cast in pockets determine Grade of Steel of the bolster casting: Reference AAR Standard S-312

      – Grade B bolsters use AWS electrode E7018, or equivalent
      – Grade B+ bolsters use AWS electrode E8018, or equivalent
      – Grade C bolsters use AWS electrode E9018, or equivalent

• For fabricated pocket, identify material and choose appropriate electrode per AWS D15.1 If the wedge is below the pocket wall, add reinforcement fillet weld on top. See wedge welding cutaway illustration.

 

Housing Securement Welding Procedure
(TCC-45 LTLP)

Remove the top cap assembly from housing prior to welding.

Warning: Do not weld near the top cap assembly.

Warning: Do not weld directly to either Miner housing or top cap.

All surface preparation and welding must comply with AWS D15.1 Railroad Welding Specification – Cars and Locomotives, latest edition. Specification M-214 can be used for more information on preheating.

1. Grind, clean and prepare for welding.

2. For cast pockets, AAR M-214 recommends preheating between 300° F (149° C) and 600° F (315° C), not exceeding 600° F (315° C).

3. Materials

• Type of weld: Flare bevel groove

• Wedge: Cast Steel ASTM-A-27 Grade 65-35

• For cast in pockets determine Grade of Steel of the bolster casting: Reference AAR Standard S-312

      – Grade B bolsters use AWS electrode E7018, or equivalent
      – Grade B+ bolsters use AWS electrode E8018, or equivalent
      – Grade C bolsters use AWS electrode E9018, or equivalent

• For fabricated pocket, identify material and choose appropriate electrode per AWS D15.1 If the wedge is below the pocket wall, add reinforcement fillet weld on top. See wedge welding cutaway illustration.