TM  10-3930-669-20 WARNING Drive  axle  and  oil  retains  extreme  heat.    Use  extreme  caution  when  disconnecting  hoses  from drive axle oil cooler.  Failure to do so will result in severe bums to personnel. FLOW TEST (1) Remove engine ventilation panel (Para 6-2). (2) Disconnect    input    oil    hose    from    oil cooler input (Para 10-2). (3) Connect   a   hose   between   flow   meter out port and oil cooler. (4) Connect  input  hose  to  flow  meter  in port. (5) Start engine (TM 10-3930-669-10). (a)   If  there  are  not  7.5  gpm  (28  gpm) present, perform Steps (6) and (7) below  and  go  to  Step  16  of  this Fault. (b)   If   there   are   7.5   gpm   (28   gpm) present, perform Steps (6) through (8)  below  and  go  to  Step  4  of  this Fault. (6) Shut down engine. (7) Remove flow meter and connec  input hose to oil cooler. (8) Install engine ventilation panel. 2-337