TM 9-2815-237-34 2-21. CYLINDER HEAD AND VALVE REPAIR (Cont’d) f.  Assembly 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. NOTE For  general  assembly  instructions,  refer  to  para.  2-12. Apply OE/HDO to exhaust valve (18) and install valve (18) in valve guide (15) from which it was removed. NOTE l Valve caps on exhaust valves are rotaters. l Perform step 2 for 6.5L engines and 1990 and above 6.2L  engines.  Perform  step  3  for  previous  model  6.2L engines. Install seal (21), valve spring shim (14), valve spring (13), valve stem seal (12), shield (11), and valve cap  (9)  on  exhaust  valve  (18). Install valve spring shim (14), valve spring (13), shield (11), and valve cap (9) on exhaust valve (12). Using spring compressor, compress valve spring (13) and install valve seal (10) in groove (17) in exhaust valve (18) and install valve keys (8). Slowly release spring compressor. Apply OE/HDO to intake valve (19) and install valve (19) in valve guide (16) from which it  was  removed. Install valve spring shim (2), valve spring (3), shield (4), and valve cap (6) to intake valve (19). Using valve spring compressor, compress valve spring (3) and install valve seal (5) in groove (20) in intake valve (19) and install valve keys (7). Slowly release spring compressor. Check installed height of valve springs (3) measuring from top of valve spring shim (2) to top of  shield  (4). Spring height must be 1-13/16 in. (46 mm). If spring height is greater, remove valve spring (3) and add spring shim(s) (2) to bring spring height within specifications. Repeat steps 1 through 9 for remaining valves and opposite cylinder head. 2-68