TM 9-2520-272-40
0056
49.Install new O-rings (Figure 34, Item 10) and (Figure 34, Item 12) onto two pitot tubes (Figure 34, Item 13).
50.Apply petrolatum to two O-rings (Figure 34, Item 10) and two O-rings (Figure 34, Item 12).
51.Install two pitot tubes (Figure 34, Item 13), small end f rst, into bores in center housing (Figure 34, Item 1).