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TM-5-4210-220-34 Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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INSPECTION - TM-5-4210-220-34_201
TM 5-4210-220-34 2-19. ENGINE - Continued 2-19.7 Exhaust Valves - Continued (3)     Tag  and  remove  the  injector  fuel  pipes  from   the injector and fuel connectors. (4)     Cover   each   injector   opening   and   the   fuel    pipe openings with shipping caps to prevent the entry of foreign material. (5)     Remove  the  two  bolts  (1)  holding  the  rocker  arm shaft   brackets   (2)   to   the   cylinder   head.      Then remove the brackets and shaft (3) (6)     Flip over the rocker arms (4) and lift off the exhaust valve bridge (5). (7)     Remove  the  cylinder  block  air  box  cover   so   that piston    travel    may    be    observed,    then    turn    the crankshaft until the piston is at the top of its stroke. (8) Thread the valve spring compressor adaptor J7455 into    the    rocker    arm    bracket    bolt    hole    in    the cylinder head.  Compress the valve spring and remove the two-piece tapered valve lock (6). (9)     Release the tool and remove the spring cap (7), valve spring (8), and spring seat (9). b. Exhaust Valve Removal NOTE Cylinder head must be removed, see para.  2-19.8.    The  following  instruction  may  be  used  for  the  right hand or left hand cylinder head. (1)     Support  the  cylinder  head  on  2  in.    thick  wood  blocks  to  keep  the  cam  followers  clear  of  the  bench.    Be careful not to damage or scratch the seal area around the intermediate water nozzles. (2)     Remove the fuel pipes from the injector and fuel connectors.  Cover the fuel pipe and injector openings with shipping caps to prevent entry of foreign material. (3)     Remove  the  two  bolts  (1)  holding  the  rocker  arm  shaft  brackets  (2)  to  the  cylinder  head.    Remove  the brackets (2) and shaft (3). (4)     Remove the fuel injectors as detailed in para.  2-19.5. (5)     Flip over the rocker arms (4), and lift off the exhaust valve guide bridge (5). (6)     Place a block of wood under the cylinder head to support the exhaust valve being removed. (7)     Thread the valve spring compressor J7455 into the rocker arm bracket bolt hole in the cylinder head. 2-206

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