TM 10-3930-664-24 2-147.  HEATER SHUTOFF VALVE REPLACEMENT (MODEL MHE-271 ONLY) This task covers: Removal, Cleaning, Inspection, and Installation INITIAL SETUP: Tools and Test Equipment: General Mechanics Tool Kit (1, App.  E) Drain Pan (10, App.  E) A.  REMOVAL WARNING Do  not  remove  heater  hoses  when engine  is  hot.    Hot  water  could  flow out and burn you. 1. Place   container   beneath   heater   hoses   during removal to catch residual fluids. 2. Tag  inlet  hose  (1).    Disconnect  inlet  hose  from heater shutoff valve (2) by loosening clamp (3). 3. Remove  heater  shutoff  valve  (2)  from  hose  (4) by loosening clamp (5). B.  CLEANING Clean     heater     shutoff     valve     and     heater     hoses     in accordance with paragraph 1-24. C.  INSPECTION Inspect  heater  shutoff  valve  and  hoses  in  accordance with paragraph 1-24. 2-389