SERVICE AND MAINTENANCE
MANUAL
M20 SERIES
M20C· M20D
M20E· M20F
BestManuals.net
on \I,eb
MOONEY AIRCRAFT, INC.
REVISED JULY 1980
MOONEY M 20 SERIES
SERVICE & MAINTENANCE
MANUAL
MODEL
MARK 21
1962-M20C
1963-M20C
1964-M20C
1965-M20C
1966-M20C
1967-M20C
SUPER 21
1964-M20E
1965-M20E
1966-M20E
1967-M20E
APPL !CABLE TO THE FOLLOWING AIRCRAFT
SERIAL NUMBERS
SiN 1940 thru 2207, SiN 2209 thru 2255,
SiN 2257 thru 2296, and SiN 1852
Si N 2297 thru 2622, SiN 2208, and SiN 2256
SiN 2623 thru 2741, SiN 2743 thru 2806
Si N 2807 thru 3184 and SiN 2742
Si N 3185 thril 3466
SiN 670001 thru 670149
SiN 101 thru 399, 401 thru 469
SiN 470 thru 831, and S/N 400
SiN 832 thru 1308
SiN 670001 thru 670062
MODEL
MASTER
1963-M20D
1964-M20D
1965-M20D
1966-M20D
SERIAL NUMBERS
SiN 101 thru 200 and SiN 1
SIN 201 thru 251
SiN 252 thru 259
SiN 260 Only
EXECUTIVE 21
1967-M20F SiN 6600.03, 660004, and
SiN 670001 thru 670539
TffiS REVISED EDITION SUPERSEDES ALL MOONEY M20C,D & E (1962-1965) SERVICE
& MAINTENANCE MANUALS.
PART NUMBERS AND STATION CALLOUTS IN TffiS MANUAL MAY NOT APPLY TO ALL
MODELS.
ALL REFERENCES IN THIS MANUAL TO M20E MODEL AIRCRAFT ARE ALSO APPLICABLE
TO M20F MODEL AIRCRAFT UNLESS OI'HERWISE NOTED.
A SIX-DIGIT SERIAl; NUMBER CODE WILL BE USED FOR ALL 1967 AND SUBSEQUENT M20
SERIES MODELS. CONSEQUENTLY, ALL FOUR-DIGIT (1962-1966) SERIAL NUMBER CALL-
OUTS IN TffiS MANUAL WITH tI& ON" DESIGNATIONS SHOULD BE UNDERSTOOD TO INCLUDE
ALL SUBSEQUENT FOUR-DIGIT AND SIX-DIGIT SERIAL NUMBERS FOR THE MODEL{S)
SPECIFIED.
REVISED JULY 1980
MOONEY AmCRAFT CORPORATION
P. O. BOX 72
KERRVILLE, TEXAS
78028
MANUAL NUMBER MAN 104
i
LOG OF REVISED PAGES
INSERT LATEST REVISED PAGES--DESTROY SUPERSEDED PAGES.
PAGE NUMBER
i&ii
iii
vi & vii
1-5 & 1-6
1-12 thru 1-14
1-15 & 1-16 Added
2-1
2-3
2-3A Added
2-3B Added
2-4
2-7
2-8
2-11
2-12 tbm 2-14
2-15 Ad:led
3-1
3-2
4-1 thru 4-3
4-5 & 4-6 Added
5-1 thru 5-4
5-6
5-9
5-10
5-14
5-15 & 5-16
5-17
5-19 thru 5-22
5-23 & 5-24
5-25 tbm 5-30
DATE OF
LATEST REVISION
July 1980
November 1966
November 1966
November 1966
November 1966
November 1966
November 1966
November 1966
November 1966
November 1966
November 1966
November 1966
November 1966
October 1975
July 1980
October 1975
November 1966
July 1980
November 1966
November 1966
November 1966
November 1966
November 1966
November 1966
November 1966
October 1972
May 1979
November 1966
October 1975
November 1966
PAGE NUMBER
DATE OF
LATEST REVISION
6-1 & 6-2 May 1979
6-3 & 6-4 November 1966
6-7 November 1966
6-9 thru 6-14 November 1966
6-17 thru 6-26 November 1966
6-33 & 6-34 Added November 1966
7-3 thru 7-8 July 1980
7-11 July 1980
8-1 November 1966
8-9 November 1966
8-22 tbm 8-24 November 1966
8-25 & 8-26 Added November 1966
8-27 thru 8-36 November 1966
9-2 thru 9-4 November 1966
10-3 & 10-4 November 1966
10-5 October 1975
10-7 November 1966
100-HOUR INSPECTION GUIDE,
SHEET 1 November 1966
11-3 November 1966
*THE ASTERISK INDICAT.ES PAGES REVISED, ADDED, OR DELETED BY THE
CURRENT REVISION.
ADDITIONAL COPIES OR CURRENT REVISIONS OF THIS PUBLICA TION MAY BE
PURCHASED FROM YOUR WCAL MOONEY MARKETING OR SERVICE CENTER
ii
TABLE OF CONTENTS
SECTION PAGE
I. INTRODUCTION...................................................................................................................... 1-1
A. GENERAL .................................. _.................................................................................... 1-1
B. SCOPE OF MANUAL...................................................................................................... 1-1
C. DESCRIPTION................................................................................................................ 1-1
D. SPECIFICATIONS OUTLINE........................................................................................ 1-4
11. HANDLING AND SERViCiNG............................................................................................... 2-1
A. GENERAL........................................................................................................................ 2-1
B. ACCESS PROVISIONS.................................................................................................... 2-1
C. GROUND HANDLING..................................................................................................... 2-1
1. Jacking...................................................................................................................... 2-1
2. Mooring .................................................................................................................... 2-1
3. Towing .................................................................................................................... 2-1
4. Leveling ...................................................................................................................
5. Weight & balance ................................................................................................... 2-3
D. SERVICiNG...................................................................................................................... 2-4
1. Fuel system............. ................................................................................................ 2-4
2. Engine lubrication................................................................................................... 2-7
3. Brake system............................................................................................................ 2-7
4. Battery...................................................................................................................... 2-7
5. Induction system...................................................................................................... 2-7
6. Vacuum step system................................................................................................ 2-7
E. LUBRICATION................................................................................................................ 2-7
F. EXTERIOR AND INTERIOR CARE............................................................................. 2-9
Ill. POWER PLANT ...................................................................................................................... 3-1
A. GENERAL........................................................................................................................ 3-1
B. TROUBLE SHOOTING................................................................................................... 3-1
C. INDUCTION AIR FILTER CARE................................................................................. 3-1
D. ENGINE REMOVAL........................................................................................................ 3-1
E. PROPELLER REMOVAL............................................................................................... 3-2
F. INSTALLATION OF ENGINE....................................................................................... 3-2
G. INSTALLA TION OF PROPELLER.............................................................................. 3-2
H. ENGINE CONTROL ADJUSTMENTS............................................................................ 3-2
IV. STRUCTURE............................................................................................................................ 4-1
A. GENERAL........................................................................................................................ 4-1
B. REMOVAL OF WiNG...................................................................................................... 4-1
1. Removal of wing...................................................................................................... 4-1
2. Installation of wing.................................................................................................. 4-2
V. LANDING GEAR AND BRAKE SYSTEM ............................................................................ 5-1
A. GENERAL........................................................................................................................ 5-1
B. REMOVAL OF LANDING GEARS................................................................................ 5-1
1. Main gear .................................................................................................................. 5-1
2. Nose gear .................................................................................................................. 5-1
C. REMOVAL AND DISASSEMBLY OF SHOCK DiSCS ................... · ................................ 5·3
D. REASSEMBLY AND INSTALLATION OF LANDING GEAR..................................... 5-3
1. Main gear ................................................................................................................... 5-3
2. Nose gear .................................................................................................................. 5-3
E. BRAKE AND WHEEL MAINTENANCE........................................................................ 5·6
1. Brake lining inspectiQn and replacement .............................................................. 5·6
2. Brake bleeding.......................................................................................................... 5-15
3. Wheel assembly inspection.................................................................................... 5-15
REVISED NOVEMBER 1966 iii
SECTION
F. LANDING GEAR RIGGING PROCEDURE ... ... ......... ...... .. ..... ........ ... .... .. ... .. ... ....... .. .. ..
PAGE
5·15
5· 15
5·16
5· 17
5·20
5·20
5·20
5·20
5·23
5· 23
5·23
5·23
5·24
1. Rigging instructions ... ..... ... ...... .... ....... ..... ..... ......... .... ... ... ...... ..... ..... ... ... .. . .. .. ... .. ." ..
2. Inspection of preload .... .. .... ......... ...... ...... ........ .... . .. .. .. .... ..... .... ..... .. ... ........ .... , .. .. .. ..
3. Adjustment of preload .. .. .. .. .. ,..... .. " .. .... ..... .. , .... .. .. .... ... ....... ... .. . .. ..... ... .. .. ....... .. .. ...... .
G. INSPECTION OF LANDING GEAR SHOCK ABSORBER ....... .. ........... .. .... ........ .. .. .. ..
1. Rubber discs .. .. .... ... .. ..... .. ." ... .. ... .. .... ... .. ..... .. ...... .... .. ... .. .. .. .. .. .. , .. .. .. .. , .. .. .. . .. " .. .. .. .. ..
2. Co liars and bolts ...... ....... " , .. .... ., ... .. ...... .. ............. .. .. .. .. ... ... . ..... " .. .... .. ......... . .. .... ..... .
3. Nose gear snubber ...... ... .. ..., .... .... ........ ..... " ... ...... " .... ." .,... " .. .. , .. .. .... "" .. ... ... .. .. .. .. .. ..
H. ELECTRIC GEAR SYSTEM (OPTIONAL) .. .. .. ... " ... " .. " .. ... ..... .. .. . .... ... ...... .. ..... .. " ... ..
1. Operation ..... ...... .. .... ... ....... , .. .. .... ........... .... ....., ... .. .. ......... ... " .. .. ......... .. ' ....... " ... .... .. , .. ..
2. Manual operation of electric gear .... .. ,..... .. , .. ... , .. ,,, .. .... , .. .... ... ... .. ..... ... .. . ,,,, .... ,, ,, ,
3. Gear inspection .. ... .. ............... .. .. .. .. ... ... .. ... ... .. ................. " .. .... , .... ,,, .. .. .. .. ....... .. , ..... .
4. Electric gear rigging procedure .. .. ... , .... .. .... . "." .... ,,, ..... .. ........ "" ... ....... .... ... . ..
VI. CONTROL SySTEMS .. "" ...... " .... .. . .. .......... ..... .... .. ... .. .... ... .. ...... " ... '''" . .. . ", .. , ... ... .. . .... .. .. .... .. 6· 1
A. GENERAL .... ..... ... ...... ..... .." .. " ............... ..... ... .... .. .. .. ...... ........ .. .... ..... "., ....... ..... ".... .......... 6·1
B. REMOVAL AND INSTALLATION. ..... .. .... .... .. .......... ... .. .. ....... .. .. ... ...... ... ......... 6· 1
1. Ai lerons .. .. .. . . .... ... ...... ..... .... ... ... .. .. .. ..... .. .. .. ... ..... .. ..... ..... .. , .. .. ",," .... .. .... .......... ........ 6· 1
2. Rudder ....... .. ., .. , ....... .. .... .. ... ... .... ..... .. .. .... . ... .. .. ... .. ...... .. .. ... ..... ... .. ...... .... ... .. .. .. .... .. .. .. . .. ' 6·1
3. Elevators .. . .. ... ... .. .. ,,' ...... , ...... .. .. ,.. . .. .. ........ ... .. .... .. .. ... ... . .. .. .. ,....... ".. ... .. .. 6· 1
4. Flaps ... .." .. . " ... ................. ...... .. ...... ... ............ .. .. .. ........... " ... .. .' ... ", ......... .. .. ....... 6·1
C. CONTROL SURFACE BALANCE DATA. , ..... .. · .. .. , .... .. .... .. · .. , .. ..... .... · .. · .... ... ,...... .. .. ·. ... .... 6·2
D. RIGGING AND ADJUSTMENT ....... , .. ." ... . .......... ,... , . ... .. ... .. ... ". " " .. ". " "" ." .",,, ,,, 6·2
1. Ai leron rigging and adjustmenL .... .... .... . .. "" ....... . .. .. .. .. " .......... " .. ..... , . ,," .... ' 6·2
2. Trim rigging and adjustment .... . " .. .. .. ... ... ... .. ... ..."" .. ,,, .. , .. ... ,, ... ,, .... ..... .... .. . 6·3
3. F lap rigging and adjustment.. ...... , .. ....." .. " .... , .... .. .. ...... .. " ...... .. ... .... , .. , .. . .. .. .. ,...... , 6·3
4. Rudder rigging and adjustmenL .. , .... . .... .. .. ...... ....... .. ..... . .. , .. ,... .. " .... ." ..... ,..... .. .... " 6·3
5. Elevator rigging and ad justment ... ... ........... .. ...... .. . .. .... .. .. .. ..... .. ... .. , .. ....... " .. ..... .. . .. 6·4
6. Trailing edge trimming ........ .... .. , ... ...... ...... .... .... .. .... ..... ..... .. .. .. ....... ... . .. , .. .. , .... .. .. .... 6·4
7. Hydraulic flap bleeding" .. ...... ...... ...... " .. .. .. .. " .. .. .. ....... .. ... .. ...... , ...... .. .. .... ... ... .... .... 6·4
E. CONTROL TRAVEL AND RIGGING SPECiFiCATIONS .. .. .. , .. ..... , ..... ,.... .. ....... .. ." ... 6·7
F. POSITIVE CONTROL SySTEM ........ ,...... ... .. .. .. . .. .... , .. ..... ... " ...... .. .. , ... " .... .. .. , .. "" .. " .. , 6· 17
1. Introduction ., . ... . .. ...... " .. .. ........ .. ..... ... .. .. .. ' .. .. ........ " ... ....... , ...... .. .. ............ .............. 6· 17
2. System description ... .. . ... .. ... ... .. , .... .. .. .. ............ , .. , .... ...... .. ... , . .. ...... .. ,.. .... ... .. ............. 6· 17
3. Ground test procedure .. , , .. , .... .. ... ..... .. ... .. , ... ..... .. ... .. , .. ....... .. .. ... " ..... .. ' .... .... ... .. .... .6·18
4. Roll / yaw system" .. ........ .. .. .. ..... , .... .. .. .. ... ... .. .. .. ......... ." ... " .... .. .......... ... ..... .. .... ,.. ..... 6· 21
5. Operating instructions and flight test.. .. ........... ... .. .... . .. .. ..... .... ... .... .. ".. .. . ..... .... 6·22
6. Emergency procedures .. . ... .. ... .. .. ... .. ... ..... .. .. " .. .. .. .. .. .. .. ... .. .. .... .. .... .. ,,,. .. . .... .. .. .. . ... .. 6·22
7. Ma i ntenance ...... .. .. ..... .. ....... ... ..... ... .. ......... ............ .. ... .. .. ... .. ... ... .. ........... ...... ... .... , .. ,.. 6·23
8. Trouble shooting .... , ....... .. .. ... ....... ....... .. .. , .. .. ... ... .. , .... ....... " .. ,.... ... ............. ... . .. .. .. . 6·23
9. Trouble shooting tests .. . ... .... .. ......... .. . .. .... .. ......... .... .. .. ..... .. ... .. ......... .. . .. .. ... . .. .. ... ... 6·25
VII. FUEL SYSTEM 7·1
A. GENERAL ., ..... ........ ..... .. . ..... ... ... .... .. .. ... .... .... .. ..... "............ .... .. ... .. .. .. .. ... .. .. .... ..... .. 7·1
B. TROUBLE SHOOTING ....... .. .... , .. ...... . ... .. .. ... ... .. .... ... .. " .. ....... ... ... .. .... .. .. ..... ....... .. .. ,.. ... .. .. 7 .. 1
C. REMOVAL AND INSTALLATION OF FUEL PUMPS ... ... ........... .. ... ............ ... .... .. 7·2
1. Electr ic fuel pump removal. .. ......... .. ..... ..... .. ........ .. .... ...... .... .. .... ...... ............ .. .... ,... 7·2
2. Electric fuel pump removal. .. ....... .. ... .. .. , ... , ...... .. .. ....... .. ... .. .. , .. ..... , . ...... 7·2
3. Installation of electric fuel pump .. ... ... .... " ... ..... ... .. ... .... , .... .. ............. .... .. ........ ... 7·2
4. Engine.driven fuel pump .. ................... .. .. ............... . .... ... , ..... .... .. ... .. ..... .. ,; ... ...... ..... ... 7·2
D. REMOVAL AND INSTALLATION OF FUEL SELECTOR VALVE ... ...... .... ... ... ,. 7·2
E. FIELD REPAIR OF FUEL TANKS ..... ,.................. .............. ...... ...... ,.......... .,.. 7·3
1. General ... ... .. . .... .. , .. ...... '.... .... .. ... .. . .. ....... ... .... .. .. ... .. .. .. ..... ..... .. .. .. ..... .... ... ... .. ... ... 7·3
2. Approved materials . ... .... .... ..... ... .... ... ... .. .... .......... ... .. ,.. .... .............. .......... .. ... .. ... .. .... 7·3
3. Handling and mixing sealant ... .. , .. .... .... .. " ...... ... , ..... ...... ........ ....... .. ....... .. ..... ... 7·4
4. Sealant application instruct ions ,,,,, .... .. , . .. .... .... ...... ' ....... .... ".. .... ...... ... .. .. ... 7·5
5. Description of leaks .. .... ....... ,..... ... ..... .. ..... . .. .... . ...... .. .. .......... ... " .... .. ..... .... .. ...... ...... 7·8
6. Leak detecti on ... ...... ... ....... .. .... " ....... ... , " ... .. ... ... . ... .. , .. .. ... .. ..... .. . , "... .. ...... ....... .... .. . 7·8
7. Leak repair procedure" ... .. ... ..... ... ...... .. .... , .. .... ... . .. .. .. ... , .. ... ..... .. ,.. ...... ..... . .. ... ...... .. .. .. 7·11
iv
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1968-1976 Mooney M20F Factory Service Maintenance & Illustrated Parts Manual s
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Description
Overhaul your Mooney M20F with the factory service manual that covers every system, every procedure, and every part from 1968 to 1976. Whether you're tackling scheduled maintenance, diagnosing a problem, or sourcing replacement parts, this manual walks you through it all with factory precision and detailed illustrations. Download it instantly and get to work.
This PDF includes both the complete service and maintenance procedures plus the illustrated parts catalog. Covers all serial numbers across production years 1968, 1969, 1970, 1971, 1974, 1975, and 1976. Searchable text, bookmarks, and a clean layout mean you find what you need fast. Own it once, use it forever.
