TM 55-1930-209-14&P-7
m.
Replace damaged or worn parts using adjusting spring kit parts (relieving diaphragm, adjusting spring, and/or
spring button).
n.
Assemble parts in sequence shown in Figure 4-1. Install bonnet and secure with six screws.
o.
Back off adjusting screw until it turns freely.
p.
Remove red tag from power panel 1 circuit breaker 3P5.
q.
Start air compressor system by following procedures in paragraph 3-2.1.
r.
Adjust pressure regulator to required setting of 40 psi. Turn adjusting screw clockwise to increase pressure
reading and counterclockwise to decrease pressure reading.
s.
Record completion of this maintenance item in log book.
4-5.1.2 Replacement. If the pressure regulators do not work properly after repair and adjusting, replace following these
procedures.
a.
Shutdown air compressor system by following procedures in paragraph 3-8.2.
b.
Redtag power panel 1 circuit breaker 3P5 indicating, "WARNING DO NOT ACTIVATE REPAIRS BEING MADE."
c.
Disconnect the union nearest the regulator and then disconnect the airlines at the regulator.
d.
Connect the airlines to the new regulator making certain air flow is in the direction of the arrow on the new
regulator. Reconnect the union. Use pipe tape to prevent air leaks.
e. Restart the compressor system and adjust the regulator as necessary following the procedures In paragraph 3-2.1
4-5.2
Air filter 1
4-5.2.1 Repair. If maintenance on pressure regulators indicates dirt and grit in system, and for semiannual maintenance
services, perform these procedures.
a. Shut down air compressor system by following procedures In paragraph 3-8.2.
b.
Redtag power panel 1 circuit breaker 3P5 indicating, "WARNINGDO NOT ACTIVATEREPAIRS BEING MADE."
c.
Manually, without using a wrench, unscrew ring nut attaching bowl guard and plastic filter bowl to filter head and
remove guard, bowl and bowl gasket (Figure 4-2).
d Unscrew filter element screw and carefully remove lower baffle, gasket, filter element, gasket, shroud, and
upper baffle. Place them on clean cloth in sequence shown in Figure 4-2.
e.
Wash filter element in soap and water, rinse, and allow to dry. Replace element (NSN 4330-00-803-1028) if
cracked, chipped, deformed or unable to clean to original color.
f.
Wash filter bowl and all other parts with soapy water. Rinse and dry with lint-free cloth.
g.
Inspect each part and replace any damaged or worn parts using bowl kit (CAGEC 04049, P/N 36017-BKF-329).
h.
Assemble parts in sequence shown In Figure 4-2 on filter element screw. Screw filter element screw into filter
head.
i.
Carefully install plastic filter bowl, guard and gasket. Then secure to filter head with ring nut. Tighten hand-tight
without using a wrench.
j.
Remove red tag from power panel 1 circuit breaker 3P5.
k.
Start air compressor system by following procedures in paragraph 3-2.1.
I.
Record completion of this maintenance item in log book
4-4
