MOONEY INTERNATIONAL CORPORATION
M20V SERVICE AND MAINTENANCE MANUAL
Page
Date
11
MAR 2017
Rev Date
Press Windshield De- Ice switch. Check that de- icing
fluid is discharged from spraybars. Check that no holes
are blocked.
-
Switch electrical power OFF. -
Level III
Annual Inspections
At Level III, it is recommended that all Level II Inspections are complied with and that the following inspections are
added/included.
Maintenance Practice Notes
Remove tailcone panels and empennage panels.
Check security and condition of component’s supply
lines and wiring. Pay particular attention to components
close to control rods, etc.
-
Drain tanks. Remove and clean strainer in tank outlets. -
Refill tanks. Check accuracy of tank contents indicator
during refilling process.
The contents indicator does not display actual contents
over the entire range. Refer to calibration chart (Figure
30- 3).
Level IV
Component Checks
The following checks are detailed for use in conjunction with SECTION 30-12-01, TROUBLESHOOTING. In cases
where components can be checked on the aircraft as an alternative to bench testing, both methods are described.
Maintenance Practice Procedures
Check fluid delivery rate from Airframe/Propeller Pump. 1. Fill tanks to top of filler tube. Operate pump(s) at De-
Ice or Anti- Ice, as required, for a time period. Refill
tanks; measure quantity necessary to replenish to origi-
nal level. Calculate flow rate. Permitted limits are:
De- Ice - 280 to 300 ml/min.
Anti- Ice - 140 to 150 ml/min. OR
2. Remove Airframe/Propeller Pump. Bench test.
Check High Pressure Warn Switch. 1. Disconnect Nylon Tube from inlet to Filter. Connect
pressure gauge (0 - 180 lbf/in
2
) (0 to 13 bar) to tube.
Use TKS Nylon Tube fittings. Operate Airframe/Propel-
ler pump in a series of short bursts (in order to limit rate
of pressure rise) and observe pressure at which High
Pressure Warn LED illuminates. Permitted limits are:
75 to 90 lbf/in2 (5 - 6 bar) OR
2. Remove High Pressure Switch. Bench test.
30-12-02
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