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  HEIGHT CONTROL VALVE AND LINKAGE REPLACEMENT 0084 00  \ADJUSTMENT - Continued  0084 00-11 Change 1  ADJUSTMENT - Continued  15. Raise control arm (21) upwards 90°.  16. Remove wooden block from between frame rail (22) and suspension beam (23).