TM 55-2840-241-23
Figure 5-14. Anti-icing Valve
Poppet Seat
Replacement
Table 5-2. Anti-icing Air Valve Inspection and Repair
Serviceable
Repairable
Item Condition
Limit
Limit
Disposition
1
2
3
4
5
6
Lever wear at poppet
mating surface
(creating flat).
Wear at hole for
airframe linkage.
Nicks or scratches
in flared tube sealing
surfaces of valve
body.
Stripped or crossed
threads on valve
body or coupling
nut of the poppet
guide.
Poppet wear.
Poppet seat damage
Max flat length of
Repair by grinding rounded
1/16 in.
end in accordance with
figure 5-15 or replace lever.
Remaining wall
Repair or replace lever.
thickness not less
than 0.040 in.
None.
Repair or replace valve body.
None.
Max of one damaged Chase threads.
thread per
connection.
Max wear step
Replace poppet.
of 0.005 in.
None.
Replace seat.
or wear (excessive
valve leakage).
5-24
