TM 1-4220-250-12&P
4.8.5
Replace Inflation Assembly Check Valve Assembly.
This task covers:
a.
Repair
b.
Remove
c
Install
INITIAL SETUP
Tools/Equipment
Aircraft General Mechanic Tool Kit
Check Valve Assembly (Schrader Type)
6100-T
Valve Core Tool
318M0007POOl
Torque Wrench
0-150 inch lbs.
1.
Replacement of Check Valve Assembly. To
replace a defective check valve assembly, proceed
as follows:
NOTE:
DIMENSIONS ARE IN INCHES
f. Perform a functional and leakage test on the
life raft C02 cell in accordance with
paragraphs 4.7.1 and 4.7.2.
.
a. If not available, fabricate a valve core tool as shown.
b. Remove inflator cap nut
c. Insert valve core tool and unscrew check valve from valve stem.
d. Insert new check valve in valve stem and tighten with valve core tool hand tight
e. Replace cap nut and torque to 25 inch lbs
END OF TASK
4-22
