Service And Repair
Replacing the Air Purge Screw
46
8.
Lubricate the three O-rings on the new screw with petroleum jelly and install it with the hitch pin pushed on
and hanging in the vertical position (see Figure 41).
Figure 38. Locating Air Purge Screw
Figure 39. Locating Air Purge Screw Hitch Pin
rjp
u
mp
s
/fig41.ep
s
Air p
u
rge
s
crew
2-inch port
S
ervice
s
crew (
b
ene
a
th protective pl
u
g)
Check v
a
lve ho
us
ing
hitch pin
Note th
a
t the
s
lot in the
top of the
a
ir p
u
rge
s
crew i
s
off
s
et 90 degree
s
from the
hitch pin
LLD tr
a
n
s
d
u
cer or
MLLD port
Check v
a
lve port