MOS-94P Multiple Launch Rocket System (MLRS) Repairer M142 HIMARS Download
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2. Troubleshoot the FCS and isolate malfunction of a faulty component. Perform the troubleshooting procedures for the following: a. LM will not move. (1) In the stowed position. (2) LDS malfunction prompt appears, perform malfunction number 22. (3) Travel locks unlock when LM command to move (NO), perform malfunction number 121. (4) LDS pump motor don't come on, perform malfunction number 89. (5) LM will not elevate, perform malfunction number 24. (6) LM will not move in azimuth (see note), perform malfunction number 25. Observation of LM movement is important to assure correct procedure is followed. (7) LM moves in azimuth, perform malfunction number 89. b. Perform LRU bit light on procedures on the following: (1) EU LRU BIT LIGHT ON. (2) FCU LRU BIT LIGHT ON. (3) SRP/PDS LRU BIT LIGHT ON. (4) CMP LRU BIT LIGHT ON. c. Follow the FAULT messages procedures outlined in technical manual. 3. Remove the faulty component. 4. Install the replacement component. Perform installation procedures for new component. 5. Verify the FCS is operational. 6. Complete maintenance forms. Evaluation Preparation: Ensure all items required in the condition statement (or appropriate substitutions) are on hand and all safety requirements are met. 3-56 1 October 2014