MOONEY INTERNATIONAL CORPORATION
M20V SERVICE AND MAINTENANCE MANUAL
Date
MAR 2017
Rev Date
Page
7
PRECISEFLOW OXYGEN SYSTEM CONSERVER
FIGURE 35-4
35-00-02 - PRECISE FLIGHT MAINTENANCE
-CAUTION-
INSTALL PROTECTIVE COVERS ON ALL OPEN
LINES AND COMPONENT FITTINGS IMMEDI-
ATELY AFTER THEY ARE DISCONNECTED.
Maintain aircraft structure and wiring in accordance
with Mooney electrical schematics and FAA AC43.13.
35-00-03 - PRECISE FLIGHT BOTTLE REMOVAL
AND REPLACEMENT
Bleeding Procedure:
1. Aircraft battery power ON, oxygen display panel
ON.
2. Connect Flowmeter breathing device to overhead
distribution panel and turn Flowmeter to full flow until
oxygen is purged from the System and the flashing red
200 PSI quantity LED has been illuminated for 10 min-
utes and no more oxygen is flowing through the breath-
ing device.
3. Oxygen panel display OFF, aircraft power OFF.
Bottle Removal Procedure:
1. Remove aft fuselage access panel fasteners.
2. Remove and store access panel in a safe location.
3. Detach flexible oxygen line and cap both lines.
4. Disconnect electrical harness.
5. Release the two band clamp restraints.
6. Remove bottle and regulator assembly by first
moving the assembly forward and to the left. Remove
bottle and regulator assembly aft end of the bottle first.
7. Installation is opposite of removal - Tighten wing
nuts until snug and then two more turns to ensure prop-
er tension on clamp bolt.
8. Perform a functional system check following instal-
lation (purging per next step can be accomplished dur-
ing the functional test).
9. Purge the oxygen system by filling the main tank to
a minimum of 500psig and bleeding the system down
between 50- 100psig by following the bleeding proce-
dure prior to filling the system for use.
FILLER STATION CLEANING:
The filler port requires cleaning periodically, and prior to
filling, to keep clean of dirt, dust, and oils to prevent fire.
LINE CLEANING
Line Cleaning Procedure:
1. Preparation
a. Obtain a suitable container for collecting fluid
waste.
b. Wear protective gloves and eyewear.
c. Assemble a reservoir pump and drain line, see
Figure 35- 3.
2. Flushing
a. Fill 2 qt reservoir with 1% Alconox or Liquinox
detergent solution. www.alconox.com
b. Attach reservoir pump to cabin oxygen line.
c. Pump 2 qt Alconox or Liquinox through oxygen
line.
d. Undo pump connection and rinse pump with
clear water.
e. Fill 2 qt reservoir with clear tap water.
f. Attach reservoir pump to cabin oxygen line.
g. Pump 2 qt water through oxygen line.
h. Repeat steps A through D, rinsing the pump with
the next cleaning material.
i. Pump 1 qt Methyl Alcohol through oxygen line.
j. Pump 1 qt ASAHIKLIN AK- 225 through oxygen
line.
35-00-02
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