AirMan PDS185S-6E1, Service Manual

Page: 30 / 103

2. Maintenance
2-11
2.7 Change O-ring of Auto-relief Valve and Vacuum Relief Valve
●
After disassembling and cleaning the component,
check the O rings
“
1
”
,
“
2
”
and
“
3
”
. When the rubber
of these rings is found hardened, replace any one of
them.
※
O-ring
“
2
”
and
“
3
”
are damaged due to removal of
piston
“
4
”
, but remove unloader cover
“
5
”
and insert
a wire through hole (2.5 drill) from inside to
push it out. At this time, replace O-ring
“
6
”
.

When reinstalling it, check and confirm that there are no foreign matters and dust in
O-ring groove and on the O-ring. Then, coat O-ring with grease slightly.
Use CALTEX MULTIFAK EP1 grease or equivalent. Grease of poor quality will
deteriorate the material.
PC14007
PC14008E
1
2
4
Auto-relief valve
Vacuum relief valve
3
1
2
4
3
5
6
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