CHAPTER 1 INTRODUCTION Section I.  GENERAL 1-1.  Scope a.    These instructions and the instructions contained in Army Technical Manuals 9-2320209-10 and 9-2320-209-20  are  published  for  use  by  personnel  to whom  the  Ward  LaFrance  Fire  Truck  is  issued.-They provide information on the operation and organizational maintenance   of   the   equipment.      Also   included   are descriptions    of    main    units    and    their    functions    in relationship to other components. b.    Appendix    A    contains    a    list    of    publications applicable to this manual.  Appendix B contains the list of  basic  issue  items  authorized  for  the  operator  of  this equipment  and  the  list  of  maintenance  and  operating supplies   required   for   initial   operation.      Appendix   C contains the maintenance allocation chart. c.    Numbers in parentheses following nomenclature callouts    on    illustrations    indicate    quantity;    numbers preceding    nomenclature    callouts    indicate    preferred maintenance sequence. d.    Report of errors, omissions, and recommendations  for  improving  this  publication  by  the individual   user   is   encouraged.      Reports   should   be submitted  on  DA  Form  2028  (Recommended  Changes to DA Publications) and forwarded direct to Commanding  General,  U.S.    Army  Mobility  Equipment Command, ATTN: AMSME-MPP,,4300 Goodfellow Boulevard, St.  Louis, Missouri 63120. e.    Report all equipment improvement recommendations as prescribed by TM 38-750. 1-2.  Record and Report Forms a.    DA    Form    2258    (Depreservation    Guide    for Vehicles and Equipment). b.    For other record and report forms applicable to operator, crew, and organizational maintenance, refer to TM 38-750. Note  Applicable forms, excluding Standard Form 46 (United States Government Motor Vehicles Operator's Identification Card) which is carried by the operator, shall be kept in a canvas bag mounted on equipment. Section II.  DESCRIPTION AND TABULATED DATA 1-3.  Description a.  General.  The Class 530B Fire Truck (fig. 1-1 and 1- 2) is the Army's standard tactical type fire apparatus and is  designed  for  combating  structural,  brush  and  aircraft crash   fires   in   areas   of   combat   operations.      The   fire fighting  apparatus  is  mounted  on  the  Army's  standard 21/2 Ton, 6x6, Truck Chassis, Model M45A2.  The truck is   powered   by   a   multifuel   engine   with   a   five   speed forward and one reverse speed transmission.  The truck is  designed  for  use  over  all  types  of  roads,  highways and   cross-country   terrain.      For   additional   information covering  Model  M45A2  Truck  Chassis,  refer  to  TM  9- 2320-209-10 and -20.  The Fire Truck is equipped with a midship-mounted   fire   pump   which   is   driven   from   a power takeoff, connected to the transfer case.  The Fire Truck  has  the  capability  of  pumping  from  a  draft  water supply,  a  hydrant  water  supply  or  from  a  400  gallon water tank mounted on the truck.  The Fire Truck does not have the pump-in-motion capability.  The fire pump is  equipped  with  a  pressure  relief  valve  to  protect  the pump,  engine  and  hose  lines  against  damage  due  to excessive  pressure  rise  when  nozzles  are  shut  off.    A priming   pump   is   provided   for   priming   the   fire   pump. The  Fire  Truck  is  also  equipped  with  an  around-the- pump    liquid    foam    proportioning    system    for    use    in combating 1-1