Section 6
MAINTENANCE
35
WA R N I N G
!
Before performing maintenance on the valve, be
sure that all pressure has been relieved in the
compressor sump, and all downstream pressure
has been vented to the atmosphere. Also be sure
that the components of the compressor are cool
to the touch.
1. Unscrew the minimum pressure/check valve
from the receiver cover.
2. Remove round retaining cover from the main
body.
3. Remove the flat washer and heavy spring from
the main body.
4. Tap the piston assembly (with a screwdriver)
from the bottom of the main body and remove.
The o---ring will now be seen easily.
5. Remove the seal ring and discard.
6. Clean piston assembly and valve thoroughly.
7. Replace seal ring and coat the piston and seal
with Parker Super “O” Ring Seal or an equiva-
lent quality grease.
Figure 6---12 Minimum Pressure / Check Valve
(P/N 250033---821)
* Repair Kit P/N 250018---262
Figure 6 ---13 Blowdown Valve (P/N 409783)
* Repair Kit P/N 001667
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