AirMan PDS400S-6C3, Service Manual

Page: 30 / 102

2. Maintenance
2-10
2.5 Change O-ring of Unloader
<Caution during O-ring replacement>
●
Apply a thin coat of grease on the O-rings when
replacing the O-rings
“
1
”
and
“
2
”
.
※
The piston
“
5
”
is threaded with an M5 tapping in the
center area to enable attachment of an eye bolt,
etc. in order to pull out the piston
“
5
”
.
●
Replace gasket
“
3
”
and
“
4
”
with new ones.
●
After degreasing the contact face of gasket
“
3
”
and
“
4
”
, coat them with “THREEBOND 1212” and
install them.
●
When A face is disassembled, degrease it, and coat it
with liquid sealing packing “LOCTITE No.5127” and
assemble it.

When reassembling, apply thinly grease to O-ring and sliding surface.
Use CALTEX MULTIFAK EP1 grease or equivalent. Grease of poor quality will
deteriorate the material.
2.6 Change O-ring of Auto-relief Valve and Vacuum Relief Valve
●
Disassemble and clean the component, and check
O-ring
“
1
”
,
“
2
”
and
“
3
”
. Then, replace O-ring
“
1
”
,
“
2
”
and
“
3
”
, if hardened.

When reassembling, apply thinly grease to O-ring and sliding surface.
Use CALTEX MULTIFAK EP1 grease or equivalent. Grease of poor quality will
deteriorate the material.
PC13060E
PC12064-1
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