Mooney M20S Service and Maintenance Manual 1998 – Manual No. 170 PDF

Description

The Mooney M20S Service and Maintenance Manual is the complete factory-issued service document for the Mooney Model M20S, applicable to aircraft serial numbers 30-0001 and ON. This is original manual number 170, published in November 1998 and prepared to GAMA Specification No. 2. From a 25-hour break-in inspection to a full landing gear re-rig, from tubular fuselage repair to R-134a air conditioning charging, this Mooney M20S Service and Maintenance Manual gives a technician the actual procedures, torque values, rigging dimensions, and system schematics the work requires.

File Details

• Manual type: Service and Maintenance Manual
• Manufacturer: Mooney Aircraft Corporation, Louis Schreiner Field, Kerrville, Texas
• Model: Mooney M20S
• Serial number applicability: 30-0001 and ON
• Manual number: 170
• Edition / date: Original – November 1998
• Format standard: GAMA Specification No. 2
• Language: English
• Page count: 364 pages
• File format: PDF

Chapters Covered

• Introduction – scope, GAMA numbering system, supplementary publications
• Chapter 5 – Time Limits / Maintenance Checks: 25, 50 and 100-hour inspection schedules, overhaul and replacement intervals
• Chapter 6 – Dimensions and Areas: aircraft specifications, dimensions, stations
• Chapter 7 – Lifting and Shoring: jacking procedures
• Chapter 8 – Leveling and Weighing: weight and balance, Charlie weight installation
• Chapter 9 – Towing and Taxiing: ground handling, emergency procedures
• Chapter 10 – Parking, Mooring, Storage and Return to Service
• Chapter 11 – Placards and Markings
• Chapter 12 – Servicing: fuel tanks, drains, engine oil, oxygen, batteries, tires, wheels, hydraulic brakes, cleaning
• Chapter 20 – Standard Practices (Airframe): skin specifications, corrosion detection and prevention, painting
• Chapter 21 – Environmental Systems: cabin ventilation, heating, R-134a air conditioning leak check, evacuation, charging, compressor and evaporator service, expansion valve adjustment
• Chapter 24 – Electrical Power: alternator charging system, voltage regulator, battery, warning circuits, power plant circuits, load distribution, annunciator
• Chapter 27 – Flight Controls: aileron, rudder, elevator, stabilizer trim, electric trim, wing flaps, aileron/rudder interconnect, static balancing, stall warning, speed brakes
• Chapter 28 – Fuel: storage, field repair, leak repair, distribution, boost pump, gascolator, selector valve, vents, indicating
• Chapter 30 – Ice and Rain Protection: TKS airfoil ice protection servicing and maintenance, troubleshooting, heated pitot, heated stall warning vane, electric propeller de-ice
• Chapter 32 – Landing Gear: main gear and doors, nose gear and doors, extension and retraction, rigging, actuator clutch spring, emergency extension, wheels, brakes, steering, position and warning
• Chapter 33 – Lights: interior, instrument and glareshield, exterior, strobe, navigation, landing/taxi
• Chapter 34 – Navigation: pitot and static air pressure system, airspeed indicator, vertical speed, altimeter, directional gyro, turn coordinator, magnetic compass, artificial horizon
• Chapter 35 – Oxygen: recharging procedures, maintenance practices, purging
• Chapter 37 – Vacuum: dry air pump, vacuum regulator, filters, hoses, vacuum switch, stand-by vacuum system
• Chapter 39 – Electrical Panels and Components: flight instrument panel, cluster gauge, landing gear switch and override, clock, annunciator, ELT switch, electrical/electronic equipment rack
• Chapter 51 – Structures: fastener replacement, fuselage repair, tubular structure repair, tailcone repairs, wing repair, spar and stub spar repair, stabilizer and fin repair, fiberglass laminates
• Chapter 52 – Doors: cabin door rigging and adjustment, cabin door seal, baggage compartment door, latching mechanism
• Chapter 53 – Fuselage: main frame, tubular structure frame, tailcone structure, firewall, plates and skins, wing / empennage / landing gear / engine mount attach fittings
• Chapter 55 – Stabilizers: horizontal stabilizer, elevator, vertical stabilizer, rudder removal and installation
• Chapter 56 – Windows: windshield, cabin windows, storm window, acrylic drilling
• Chapter 57 – Wings: removal and installation, stall strip installation, jack points, wing tips, plates and skins, attach fittings, flaps, ailerons
• Chapter 60 – Standard Practices – Propeller
• Chapter 61 – Propellers: spinner dome and propeller removal/installation, minor blade repair, governor control rigging, governor troubleshooting, dynamic propeller balancing
• Chapter 71 – Powerplant: engine removal and installation, engine inspection and repair, ground operation checkout, engine set-up procedure, control rigging, cowling, engine mounts, fireseals, air intakes, alternate air door rigging
• Chapter 72 – Engine
• Chapter 73 – Engine Fuel Systems: distribution, controlling, fuel flow indicating, fuel flow transducer, fuel injector
• Chapter 74 – Ignition: electrical power, ignition system troubleshooting, engine firing order, switching
• Chapter 76 – Engine Controls: engine controls rigging
• Chapter 77 – Engine Indicating: tachometer, manifold pressure, fuel flow, exhaust gas temperature, cylinder head temperature, oil temperature, oil pressure
• Chapter 78 – Exhaust: exhaust system installation, servicing, periodic replacement components
• Chapter 79 – Oil: filter removal and installation, distribution, indicating, transducer test, oil system troubleshooting
• Chapter 80 – Starting: starter troubleshooting, maintenance, removal, installation, brushes, cranking
• Chapter 81 – Turbines
• Chapter 91 – Electrical Wiring Diagrams and Schematics: wiring identification system, abbreviations and equipment list, electrical equipment hardware chart by serial number effectivity, schematics

What This Mooney M20S Service Manual Gives You

This is not a generic aircraft repair handbook — it is the Mooney M20S-specific document used to service the airframe, engine, propeller, and every major installed system on the aircraft. Because the contents follow the GAMA four-level numbering scheme (Group, Chapter, Section, Subject), each task is easy to locate: the fuel distribution section lives under 28-20-00, the alternator charging system maintenance under 24-31-01, the cabin door rigging under 52-11-00, and so on. Every procedure is tied to the actual aircraft configuration, with serial-number effectivity notes where a change applies only to certain aircraft, and with references to the applicable Mooney Service Bulletins and FAA Advisory Circulars.

Throughout the Mooney M20S Service and Maintenance Manual, the real working values a mechanic needs are supplied directly: flare nut torque values for aluminum and steel tubing in inch-pounds, AN bolt and nut tightening tables for both fine and coarse thread series, hose clamp torque values for fuel and hydraulic systems (25 inch pounds) versus blast tubes, air ducts and vacuum lines (15 inch pounds), landing gear actuator preload torque ranges, flight control travel limits, stabilizer trim rigging angles, rudder and elevator free-play limits, control surface static balance moments, and shock disc wear gaps. Detailed inspection check lists are broken out by inspection level so the shop knows what to open, lubricate, torque, and record at each interval.

Systems Coverage in Depth

Inspection and maintenance scheduling is handled through the Time Limits / Maintenance Checks chapter, which lays out one-time 25-hour inspections, repetitive 50-hour inspections, and the thorough 100-hour / annual inspection with its full open-up requirements, engine functional check, propeller inspection, landing gear and retraction system inspection, fuel system inspection, exterior and interior inspection, internal structural inspection, flight control inspection, instrument and avionics inspection, and post-inspection flight test. The Access Cover Identification, Lubrication and Service Guide identifies the location of each access panel on the airframe and gives the lubrication symbol, MIL specification lubricant, and service interval for each item.

Airframe and flight controls are covered through aileron rigging with rig-pin positions and travel board reference points, rudder and nose-wheel steering system rigging, elevator rigging and stop adjustment, stabilizer trim system rigging including the stepped stop nut and jam nut configuration, rudder trim system rigging with turnbuckle and spring extension measurements, electric pitch trim carrier bearing maintenance, wing flap rigging with limit switch adjustment, aileron/rudder interconnect system rigging, control surface static balancing procedures and limits, control surface trailing edge trimming, and stall warning system adjustment and troubleshooting.

Landing gear coverage includes main gear removal and installation with trunnion bearing and shim procedures, main gear door rigging, inboard door rigging, nose gear removal and installation, nose gear door rigging, landing gear system rigging with the rigging tool and shim stock method for measuring breakaway torque, mechanical down-stop and up-stop adjustment, emergency gear extension system rigging, landing gear actuator clutch spring replacement at 1000 hours, recoiler spring and cable replacement, manual emergency extension system, main and nose wheel disassembly and assembly, brake system removal, lining replacement, break-in procedures, master cylinder removal and disassembly, parking brake valve service, and the recommended hard landing inspection areas.

Engine and powerplant procedures include engine removal and installation with isolator mount stack-up sequence and torque values, engine ground operation checkout, the full engine set-up procedure with fuel injector adjustment, idle fuel pressure, idle mixture, low boost pump pressure adjustment, full power performance, idle speed, engine control rigging, mixture control rigging, fuel injection system maintenance, starter system maintenance and troubleshooting, cowling removal and installation, engine mounts, fireseals, air intakes, alternate air door rigging, exhaust system installation and servicing, oil filter service, oil system troubleshooting, and starting system service.

Fuel system content spans the sealed integral wing tanks, fuel tank field repair with the approved sealant materials and cure times, fuel tank leak repair including temporary and permanent fastener leak procedures, fuel tank sealing steps, soapless bubble fluid formula, fuel additives, fuel boost pump removal and installation, gascolator screen cleaning, fuel selector valve removal and installation, fuel system drains, fuel vents, fuel quantity transmitter and gauge adjustment procedures, and fuel system troubleshooting.

Electrical, avionics, and instrument chapters cover the alternator charging system, voltage regulator alignment using the test fixture and circuit board adjustments, auxiliary power system, battery maintenance, warning circuits including landing gear position, pre-stall, high and low vacuum, low fuel, alternate air, and Hi/Low voltage, power plant circuits, lighting circuits, landing gear circuits, fuel system circuits, turn coordinator, heated pitot, hour meter, cigar lighter, alternator, battery, and starter troubleshooting charts, annunciator troubleshooting with the IAI circuit description, and the complete electrical wiring diagrams and schematics for the M20S by serial number effectivity.

Environmental systems include the cabin ventilation system, heating, and the closed vapor cycle R-134a air conditioning system with system leak check procedure, system evacuation and charging procedure, expansion valve adjustment, evaporator balancing, compressor drive belt inspection, replacement, alignment and tensioning, compressor assembly inspection and maintenance, compressor oil level check, evaporator module inspection, blower motor removal and replacement, and troubleshooting the R-134a air conditioning system. Ice and rain protection coverage includes the TKS airfoil ice protection system with servicing, washing, lubrication, electrical checks, schematics, and troubleshooting for the airframe/propeller, windshield, and stand-by systems, plus the heated pitot tube, heated stall warning vane, and the electric propeller de-ice system with timer, brush, slip ring, and resistance testing procedures.

Structural and Servicing Coverage

The airframe structural coverage gives the wing skin panel thicknesses by index, fuselage skin panel data, corrosion detection and prevention procedures for chemical, local-cell, concentration cell, and galvanic corrosion, epoxy-polyimide painting and priming procedures, painting repair procedures, fastener replacement including huckbolt installation and rivet replacement with oversize hole rules, welded patch repair of local damage, inner and split-sleeve splicing of tubular structure, tension fitting replacement, tailcone longeron splicing and structural skin repair, wing stringer repair, main spar repair, stub spar repair, rear spar repair, rib repair, wing tip repair, wing skin panel repair including dimple crack repair, and horizontal stabilizer / vertical fin repair procedures.

The doors and fuselage chapters cover cabin door removal and installation, cabin door rigging and adjustment procedures, cabin door seal replacement, baggage compartment door removal, installation and repair, baggage compartment door latching mechanism, and the fuselage main frame, tubular structure, tailcone structure, firewall, plates and skins with the inspection panel identification table, and wing, empennage, main landing gear, and engine mount attach fittings with the attaching hardware.

The windows chapter covers windshield removal and installation, cabin window removal and installation, storm window removal and installation, and acrylic drilling procedures with the recommended drill bit geometry. The wings chapter covers wing removal and installation, stall strip installation, jack points, wing tips, plates and skins, attach fittings, and flight surfaces including flaps and ailerons. The servicing chapter covers fuel tank servicing and drains, defueling, engine oil recommendations and change intervals, oxygen system recharging, induction air filter cleaning, battery servicing, tires and wheels, hydraulic brake bleeding for single and dual systems, and exterior, interior, windshield, engine compartment and cabin cleaning procedures.

Why This Manual Matters for Your M20S

A Mooney M20S is a high-performance, retractable-gear, normally aspirated single with a tubular steel cabin frame, semi-monocoque tailcone, and a full-cantilever laminar-flow wing — systems where the difference between a correct rig, torque, or sealant cure and a close-enough guess shows up in gear preloads, control feel, fuel leaks, or air conditioning performance. This Mooney M20S Service and Maintenance Manual gives the technician the actual numbers, the actual rigging references, and the actual inspection checklists the aircraft was designed around, so the work gets done to the standards the aircraft expects.

Whether you are an A&P performing an annual inspection, an owner assisting with an owner-performed maintenance item, a shop installing or repairing ice protection or air conditioning, or a pilot who wants to understand the systems behind the panel, this manual puts the factory service information for the M20S in one searchable document that can be opened on any device.

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Instant PDF Download

The Mooney M20S Service and Maintenance Manual is delivered as an instant PDF download after payment. No shipping, no waiting for a paper copy, no CD. Open it on a laptop in the hangar, view the schematics on a tablet next to the aircraft, or print the specific pages you need for the job in front of you. Keep the whole manual on file for every inspection, repair, and troubleshooting session over the life of the aircraft.