TM 10-8110-201-14&P
assembly (4), and turn valve stem clockwise to in-
stall it through the bellows assembly.
(3) Install seal (5) and preformed packings (2
and 3).
(4) Screw the nut (8) on the valve stem until ap-
proximately one half of the valve stem threads are
through the nut.
(5) Place bellows assembly against housing
body (16), and align the holes.
(6) Install three screws (10) in the bellows
assembly and housing body. Tighten screws
securely.
(7) Place the two housing bodies (11 and 16)
together, and align the holes.
(8) Place four screws (12 and 18) through the
housing bodies, and install nuts (15) on the screws.
(9) Install capscrew (1) in the housing bodies.
(10) Tighten nuts and capscrew to 20 foot-
pounds (2.77 m-kg) torque.
(11) Test and adjust the pilot valve a and b
above.
4-23. Venturi.
a. Removal and Disassembly.
(1) Remove capscrew (1, fig. 4-13) from housing
bodies (11 and 16).
(2) Remove nuts (15) from screws (12 and 18)
and remove the screws from the housing bodies.
(3) Separate the housing bodies and pull ven-
turi (14) from housing body.
(4) Remove preformed packings (13) from the
venturi.
b. Inspection and Repair.
(1) Inspect the venturi to determine if it is
cracked, burred or worn.
(2) Replace a damaged venturi with ser-
viceable one.
(3) Replace the three preformed packings with
serviceable ones.
c. Reassembly and Installation.
(1) Install three serviceable packings (13, fig.
4-13) on the serviceable venturi (14) and install the
venturi in the housing body.
(2) Place the housing bodies (11 and 16)
together, align the holes and install the screws (12
and 18) and nuts (15). Tighten nuts to 20 foot-
pounds (2.77 m-kg) torque.
(3) Install capscrew (1).
4-24. Female Coupling Half.
a. Cleaning and Inspection.
(1) Wash female coupling half (17, fig, 4-11)
with a hot water and soap solution and dry it with
a clean cloth.
(2) Inspect the female coupling to determine if
cracked, burred or leaking.
(3) Inspect coupling for damaged or missing
dust plug (18), gasket (19), chain, or key rings.
b. Repair.
(1) Replace Gasket. Using a pointed instru-
ment, remove a damaged gasket from the female
coupling half. Install a serviceable gasket in the
female coupling half.
(2) Replace Dust Plug. Remove a damaged
dust plug from the key ring. Pry open the key ring,
and install a serviceable dust plug on the key ring.
(3) Replace Chains and Key Rings. Follow the
procedures in c below.
c. Replacement.
(1) Remove the dust plug (18, fig. 4-11) with
chain and key rings from the damaged female
coupling half (17).
(2) Remove the damaged female coupling half
from the pressure control.
(3) Apply a coating of anti-seize compound
(item 2, App. D) to the threads of a serviceable
female coupling half, and install it in the pressure
control.
(4) Pry open a serviceable key ring, install it
on the female coupling half, and install a ser-
viceable chain on the key ring.
(5) Pry open another serviceable key ring, and
install it on the dust plug end of the chain. Install a
serviceable dust plug on the key ring.
4-25. Male Coupling Half.
a. Cleaning and Inspection.
(1) Wash the male coupling half (15, fig. 4-11)
with a hot soap and water solution. Dry it with a
clean cloth.
(2) Inspect the male coupling half to determine
if it is cracked, burred, or leaking.
(3) Inspect the male coupling half for damaged
or missing dust cap (16), gasket (19), chain or key
rings.
4-23
