TM 10-3930-669-20 b. Installation. (1) Position  heat  shield  (4)  in  cylinder  head (3). NOTE • All   four   injectors   are   installed   the same  way.    No.  2  injector  is  shown installed. • When installing injector, align to fuel pipe prior to tightening. (2) Install injector (2) in cylinder head (3) with cap screw (1).  Tighten cap screw to 18 to 22 lb-ft (25-30 Nom). NOTE Follow-on Maintenance: • Install fuel pipes (Para 4-5). • Install cab (Para 15-2). • Remove  wheel  chocks  (TM  10-3930- 669-10). END OF TASK 4-3