Quantcast ENGINE ASSEMBLY FROM SUBASSEMBLIES (Contd) - TM-9-2815-237-34_199

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TM 9-2815-237-34 2-41.  ENGINE  ASSEMBLY  FROM  SUBASSEMBLIES  (Cont’d) 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. WARNING Crankshaft must be supported during removal and installation. Failure to support crankshaft may cause injury to personnel or damage  to  equipment. CAUTION Bearing caps are numbered one through five and must be installed in correct order, starting with number one at front of cylinder block. Arrow on bearing cap must point forward or engine damage will result. After all main bearing clearances have been set, remove crankshaft (7) and gauging plastic and apply OE/HDO to all main bearings. Install crankshaft (7), all bearing caps (l), (2), and (3), long cap- screws  (4)  and  short  capscrews  (5).  Tighten  long  capscrews  (4)  and  short  capscrews  (5)  to  12  lb-ft (16  N•m). Tap crankshaft (7) rearward, then frontward; this will align main bearing thrust surfaces (6). Tighten  long  capscrews  (4)  and  short  capscrews  (5)  to  40  lb-ft  (54  N•m). Tighten  all  long  capscrews  (4)  to  110  lb-ft  (149  N•m).  Tighten  all  short  capscrews  (5)  to  100  lb-ft (136  N•m). Rotate  crankshaft  (7)  to  ensure  crankshaft  (7)  rotates  freely. Force  the  crankshaft  (7)  to  the  extreme  front  position  and  hold  in  place.  Measure  end  play  at  the front end of the number three bearing with a feeler gauge. End play should be 0,004-0.010 in. (0.101-0.250  mm). NOTE Perform  steps  17  through  24  for  6.2L  engines. Remove long capscrews (4), short capscrews (5), bearing caps (1), (2), and (3), and crankshaft (7) from  cylinder  block  (8). Apply adhesive to seal groove in rear main bearing cap (1) and cylinder block (8), Install  rear  main  oil  seal  (9)  into  cylinder  block  (8)  and  rear  main  bearing  cap  (1)  using  seal  installer. Cut excess oil seal (9) off flush with bearing cap (1) and cylinder block (8) mounting surface. Repeat  steps  4  through  10  to  ensure  rear  oil  seal  (9)  did  not  affect  rear  main  bearing  clearance. If  bearing  clearance  changed,  remove  bearing  cap  (1)  and  inspect  rear  oil  seal  (9)  for  fraying. Remove gauging plastic. Install  number  three  bearing  cap  (3),  two  long  capscrews  (4),  and  short  capscrews  (5).  Tighten capscrews (4) and (5) to 12 lb-ft (16 N•m). Tap crankshaft (7) rearward, then frontward; this will align main bearing thrust surfaces (6). Tighten  capscrews  (4)  and  (5)  on  number  three  bearing  cap  (3)  to  40  lb-ft  (54  N•m). NOTE Immediately install rear main bearing cap after application of sealant. Apply  thin  film  of  sealer  to  rear  main  bearing  cap  (1)  mating  surface.  Keep  sealer  off  bearing  and  oil seal  (9)  (installed  on  6.2L  engines). Install rear main bearing cap (1) on cylinder block (8) with long capscrews (4), and short cap- screws  (5).  Tighten  capscrews  (4)  and  (5)  to  40  lb-ft  (54  N•m). 2-156


 


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