TM 10-3930-659-34 4-73.  AIR COMPRESSOR ASSEMBLY REPAIR (Con’t). 8. Apply antiseizing tape to threads of elbow (15), nipple (14), and coupling (12). 9. Install elbow (15), nipple (14), elbow (13), and coupling (12) on cylinder head (2). 10. Apply antiseizing tape to threads of relief valve (16). 11. Install relief valve (16) on cylinder head (3). 12. If removed, install two new gaskets (10) and nuts (11) on line (9). 13. Install two elbows (7 and 8) and line (9) on two cylinder heads (2 and 3). 4-304