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Figure 1-17.  Combination control valves-installed view
Figure 1-22.  Four-way selector value installed view

TM-9-2350-256-34-2 Recovery Vehicle Full Tracked; Medium M88A1 (NSN 2350-00-122-6826) Manual
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TM 9-2350-256-34-2 Figure 1-18.  Flow regulators installed view. g. Auxiliary Hydraulic System. (1) General.    The  auxiliary  system  of  the  vehicle  has  the  following  functions:  to  supply  power  for  control  and emergency operation of the boom; to supply power for control and emergency operation of the spade and winches; and to supply power for operation of refuel pump and impact wrench. (2) Auxiliary  hydraulic  pump  (fig  1-19).    Pressure  for  the  auxiliary  hydraulic  system  is  supplied  by  the  auxiliary pump which is bracket mounted to the auxiliary engine.  The auxiliary hydraulic system is engaged by moving the system selector control handle to AUX and by operating the auxiliary engine (refer to TM 9-2350-256-10). (3) Refuel pump motor (fig.  1-20).  A gear-type hydraulic motor drives the refuel pump when refueling or defueling. Motor rotation is controlled by a four-way selector valve.  The refuel pump motor is mounted on the right rear area above the track in the engine compartment, and is coupled to the refuel pump. Figure 1-20.  Refuel motor and pump assembly -installed view. (4) Flow regulator (adjustable) (fig.  1-21).  An adjustable flow regulator is installed in the auxiliary hydraulic system to provide adjustment of flow for operation of the fuel transfer pump or hydraulic impact wrench.  A calibrated dial and Figure 1-19.  Auxiliary hydraulic pump installed view. Figure 1-21.  Flow regulator (adjustable) installed view. 1-21







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