TM  10-3930-638-24&P 2-16.   SPARK   ARRESTING   MUFFLER   AND   EXHAUST   PIPE   MAINTENANCE   (cont) STEP LOCATION ITEM ACTION REMARKS PERIODIC  CLEANING 1 Engine  com- a. Pipe plug Remove partment b. Fuel injec- Disconnect tion pump terminal wire 2 Rear of Flat piece of Hold Against  exhaust  pipe  outlet;  remove  after vehicle wood step 3 is completed 3 Operator’s a.  IGNITION Place in ON compartment switch position NOTE Place tarpaulin on engine to protect it from soot in follow- ing step. Be sure tarpaulin is not interfering with fan blades. WARNING Be sure you have applied parking brake and placed transmis- sion direction selector in N position to prevent injury to personnel. b.  START Depress  and Loose soot will be expelled through pipe pushbutton hold for 30 hole in bottom of muffler seconds c. IGNITION Place in OFF switch position 4 Engine  com- a.  Fuel  injection Connect partment pump  termin- al  wire b. Pipe plug Reinstall REMOVAL 5 Top of vehicle a. Four nuts(1) Remove and lock washers  (2) b. Two clamps (3) Remove C. TWO U bolts (4) Remove d. Exhaust pipe Remove (5) e. Top hood Remove Para 2-53d 6 Radiator a. Four nuts (6) Remove shroud, top b. Four lock Remove washers  (7) 2-72