TM 10-3930-671-24 3-14. OIL SAMPLING VALVE REPLACEMENT. a. Removal. (1) Disconnect batteries (Para 3-25). (2) Remove floor panel from forklift (Para 3-36). (3) To remove transmission oil sampling valve (1) system, proceed as follows: (a) Remove transmission oil sampling valve (1) and two washers (2) from fitting (3) and shield (4). (b) Remove fitting (3), hose (5), and fitting (6) from fitting (7). 3-16