TM 5-3895-373-20 3.4. REPLACE ENGINE OIL FILTER/COOLER ASSEMBLY LINES AND FITTINGS - Continued. A. REMOVE. CAUTION Clean hoses and fittings before disconnecting.    Always   plug   or   cap off   disconnected   fittings   to   prevent intrusion of contaminants.  Failure to properly   clean   and   cap   off   fittings may    result    in    cooling    system    or engine  oil  system  contamination  and equipment damage. NOTE Perform the following removal procedures only as needed to replace faulty or damaged components. 1. REMOVE COOLANT HOSES. a. Place drip pan below engine oil filter/cooler assembly. NOTE Tie  wraps  are  located  as  needed  to secure    supply    and    return    coolant hoses away from obstructions. b. Remove and discard tie wraps (1). c. Tag  and  disconnect  coolant  hoses  (2  and 3) at engine first.  Refer to illustration and legend   as   a   guide.      With   the   help   of another person to hold the hoses up at the engine,  tag  and  disconnect  the  hoses  at the oil filter/cooler assembly. d. Drain  coolant  into  drip  pan.      Dispose  of coolant in accordance with local procedures. 2. REMOVE ENGINE OIL HOSES. a. Place     machinery     wiping     towels     below fittings to be disconnected. b. If  applicable,  tag  and  disconnect  harness connector from engine oil pressure transmitter    (4)    and    remove    transmitter. Install a plug in the open port on cross (5). Install a cap on the exposed threads of the transmitter. c. Remove    clamps    and    tag    and    remove hoses.      Remove   adapters,   and   fittings using  illustration  and  legend  as  a  guide. Remove hoses first, then remove adapters and fittings. d. Drain   all   residual   oil   from   disconnected hoses into a drip pan.  Dispose of drained fuel in accordance with local procedures. e. Cap  or  plug  exposed  hoses  or  fittings  to prevent oil system contamination. LEGEND 1. Tie wrap 10. Reducing bushing 2. Coolant hose 11. Straight adapter 3. Coolant hose 12. Oil sampling valve 4. Engine oil pressure transmitter 13. Elbow 5. Cross 14. Hose assembly 6. Hose clamp 15. Straight adapter 7. Hose 16. Hose assembly 8. Hose 17. Tee 9. Tee 18. Straight adapter GO TO NEXT PAGE 3-14