SOP for DLTM, LMRD and LEM

PS: The Preventive Maintenance Monthly, July, 2004 by Isaac Smith, Bobby Jackson

Dear Editor,

The data link terminal module (DL TM), launcher missile round distributor (LMRD), and launcher electronics module (LEM) on the Patriot's launcher just; don't get the PMCS attention they deserve. As a result, they suffer electrical damage From moisture of overheat; From lack of air. Those can be expensive Fixes, besides killing missile launches. We've Found these pointers will Keep the DLTM and LEM pointed in the right direction:

* Drain them, This is something Patriot: crews often forget. Water builds up inside the DLTM, LMRD or LEM, which causes electrical damage and corroded connectors. The TM recommends draining the monthly, but if you're operating In a rainy area every other day would be better. We open up their drain plugs when we begin PMCS and close them when we're Finished.

* Clean the Fans in the DLTM, ZMRD and LEM, especially in the desert If the fans are running constantly in the desert, they will soon be caked with sand. If the fans aren't cleaned, they'll eventually burn out and the DLTM, LMRD or LEM will overheat. We clean the fans daily when we're operating. We've found the easiest; way to clean the fans is to take them out of the DLTM, LMRD of LEM and blow them off with an air hose.

* Keep water hoses away From the DLTM, LMRD and LEM. They're not completely waterproof High-pressure water will get inside their component and cause all sorts of damage, On all Patriot components you should never clean with hoses above the wheel level. And even then you should Fasten the louver covers on both the DLTM, LMRD and LEM to make sure water can't accidentally get in them.

CW2 Isaac Smith, PFC Bobby Jackson

Ft Bliss, TX