TM  10-4320-344-24 SECTION  IV.  REMARKS FOR PUMPING  ASSEMBLY,  600  GALLONS  PER  MINUTE,  PUMP  (WATER) (1) (2) REFERENCE A B C Applicable   to   Model   609-c   only. Repair   by   replacing   defective   components. Applicable  to  Models  609-C  and  US636HCCD-1  only. D Blind   riveter   tool   is   used   for   data   plate   replacement   and   trailer reflector    replacement    procedures. E F G H I J K Unit   level   service   is   to   add   distilled   water   to   battery   cells. D i r e c t support   level   service   is   to   add   electrolyte   to   dry   batteries. Check   specific   gravity   and   test   battery   in   accordance   with   TM   9-6140- 200-14. Battery   cables   only. Applicable   to   Model   609-A   only. Applicable   to   Models   609-A   and   609-C   only. This   procedure   is   applicable   to   the   start   pilot   relay   of   Model   609-C. Applicable   to   Models   609-A   and   US63HCCD-1   only. L Repair   by   welding. M Continuity   test. N This   test   is   applicable   to   the   low   oil   pressure   cutoff   switch   for   Model US636HCCD-1   only. O This   test   is   applicable   to   the   Start   Switch   and   Start/Stop   Switch   of Model   US636HCCD-1   only. P Applicable   to   Model   US636HCCD-1   only. Q Resistor   replacement   applies   to   Model   609-C   only. R Return   to   manufacturer   for   repair. S Repair    at    Unit    level    applies    to    Model    US63HCCD-1    only. T Service   by   draining,   flushing,   and   replacing   engine   coolant. U Test   pressure   output. V Adjust   belt   tension. W Insulation   breakdown   and   continuity   test. X Test   for   known   voltage. Y Repair   is   replacement   of   generator   capacitor   on   Model   609-C. Z Service   by   cleaning   filter. AA Pack   wheel   bearings. AB Bleed   brake   lines. AC Applicable   to   trailer   lights   only. B-13/(B-14Blank) REMARKS CODE