TM  5-2815-241-34&P ANEROID CONTROL VALVE - CONTINUED NOTE FOLLOW-ON  MAINTENANCE: Install  aneroid  control  valve  (page  2-132). TASK ENDS HERE Section  XV.  COOLING  SYSTEM  MAINTENANCE Page Page idler Pulley  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-404 Water  Pump  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-408 IDLER   PULLEY This  task  covers: a.  Disassembly  (page  2-404) c.  Inspection  (page  2-405) b.  Cleaning  (page  2-405) d.  Assembly  (page  2-406) INITIAL   SETUP Tools Materials/Parts Chisel,   cold,   1/2-inch Hammer,   ball-peen,   16-ounce Mandrel Mandrel,  ST-658 Pliers,  snapring Press,  arbor Puller,  bearing Wrench,   box-end,   7/8-inch Wrench,  hex,  5/32-inch Wrench,  open-end,  1  1/16-inch Oil, lubricating (item 12, appendix B) Packing,  preformed,  shouldered  shaft Seal, oil, idler shaft Equipment   Condition Water  pump  removed  (page  2-37). ACTION LOCATION ITEM REMARKS DISASSEMBLY 1.  Water  pump  (1) Fan  adjusting screw  (2) Using   7/8-inch   box-end   wrench,   unscrew and  take  out. 2. Nut (3) and flat  washer  (4) a. Using  1  1/16-inch  open-end  wrench, unscrew and take off. b. Remove  idler  pulley  (5)  with  attached parts. 2-404