FAB fabrication for wheel bearing wrench.

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Dear Editor,

While performing wheel maintenance on our HEMTT, we discovered a problem. Paragraph 12-2 in TM 9-2320-279-20-2 covers the wheel and drum assembly wheel bearing and stud removal and installation for the number 1 and 2 axles. On Page 12-8, the TM says to tighten down the locknut to 100 lb-ft, loosen 1/2 turn, and retighten to 50 lb-ft using the wheel bearing wrench.

Here's the question we had: How do you torque the locknut down when there is no place for a torque wrench to attach to the tool?

Our solution was to weld an adapter to the end of the bearing nut socket, NSN 5120-01-279-4789. And use a 1/2 drive torque wrench. Your readers can benefit from this tip.

Take bearing nut socket, NSN 5120-01-279-4789, and ...

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... weld an adaptor to the end of it so it looks similar to this

Bob Vinyard

QA/Maintenance Coordinator

TACOM Transportation Support

Ft Leonard Wood, MO

Editor's note: Thanks for the tip, Sir. Readers, make a note of this. Also, Page F-33 in Appendix F of TM 9-2320-279-20-3, (Apr 87, w/ Ch8, Jul 05), gives fabrication instructions for the socket, which is a similar solution. The fabrication uses bearing nut wrench, NSN 5120-01-279-4789, and gives instructions to weld a plate with an opening for a torque wrench to the socket. TACOM says the current socket, PN 3335074 and NSN 5130-01-520-9330, has a square drive end.