TM-9-2320-334-13&P LHST Operator, Field and Parts Manual M1147A1 Trailer Download
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TM 9-2330-334-13&P  FLATRACK LOCK PUSH/PULL VALVE REPLACEMENT - Continued 0108 00  0108 00-3  REMOVAL - Continued  4. Remove two screws (4), lockwashers (5), and flatrack lock push/pull valve (2) from trailer (6).  Discard lockwashers.  5. Disconnect three hoses (7) from flatrack lock push/pull valve (2).