TM 10-3930-671-24 b. Installation. (1) To install engine oil sampling valve (11) system, proceed as follows: (a) Apply sealant to threads of fittings (21) and (15). (b) Install fittings (15) and (21) on fitting (20). (c) Install fittings (15), (20), and (21) on engine (22). (d) Apply sealant to threads of engine oil pressure sensor (17). (e) Install engine oil pressure sensor (17) on fitting (20). (f) Install  three  wires  (1  9)  on  engine  oil  pressure  sensor  (17)  with  three  screws  (18)  as  tagged  and  marked during Removal. (g) Install cover (16) on engine oil pressure sensor (17). (h) Apply sealant to threads of hose (14). (i) Install hose (14) on fitting (15). 3-18