1963–1968 Cessna 100-Series Aircraft Service Manual – 150, 172, P172, 180, 182, 185 & A185 (P/N D637-13)

Cessna's 100-Series Service Manual, P/N D637-13, dated September 1, 1968, covers the 1963–1968 Model 150, 172, P172, 180, 182, 185, and A185 series, alongside the corresponding French and Argentine versions.

• Airframe repair: Structural inspection, wing and stabilizer removal, sheet-metal repair, control-surface balancing, and reference-station drawings.

• Flight controls: Aileron, flap, elevator, rudder, and trim-system troubleshooting, cable replacement, rigging, and operational checks.

• Landing gear and brakes: Wheel alignment, nose-strut disassembly, shimmy dampener servicing, tailwheel rigging, wheel-bearing repacking, and hydraulic brake bleeding.

• Powerplant and propellers: Engine removal and installation, magneto internal timing, engine-control adjustment, and fixed-pitch and constant-speed propeller servicing.

• Fuel systems: Tank and fuel-cell replacement, manufacturer-specific bladder repair, selector-valve service, fuel-injection diagnosis, and auxiliary-pump testing.

• Instruments and electrical systems: Pitot-static leak testing, vacuum-system diagnosis, fuel-transmitter calibration, charging-system troubleshooting, and model-specific wiring diagrams.

Cessna presents this manual as a reference for experienced mechanics, with step-by-step procedures for less experienced maintenance personnel.

Airframe Repair and Flight-Control Rigging

The manual details ground handling, structural inspection, and maintenance procedures for high-wing monoplanes equipped with tricycle or tailwheel landing gear. Structural repair coverage includes wing skins, spars, ribs, fuselage bulkheads, and engine mounts, with control-surface balancing fixtures and repair limits.

Control variants: Separate procedures address manual and electric flaps, the 182L pre-select flap system, elevator trim tabs, and the 180/185 stabilizer trim system. The Wing Flap System Schematic and Stabilizer Screw-jack Actuator illustrations support those sections; control-travel checks reference Cessna inclinometer SE 716.

Landing Gear and Brake Service

Goodyear and Cleveland wheel assemblies, castering axles, crosswind wheels, nose-wheel steering, and tailwheel locking systems receive separate treatment. The Nose Gear Shimmy Dampener illustrations distinguish installations, while the brake sections cover master-cylinder repair, lining replacement, and system troubleshooting.

Powerplant and Propeller Coverage

Continental powerplant procedures are separate from the 172I's Lycoming O-320-E2D “Blue-Streak” section. The French F150, F172, and FP172 use Rolls-Royce-built versions of the corresponding Continental engines; the Argentine A182 follows the 182 information.

Ignition and fuel injection: Slick and Bendix-Scintilla magneto sections distinguish internal timing and installation requirements. The Fuel Injection Schematic accompanies coverage of the fuel-air control unit, pump, manifold valve, and discharge nozzles.

McCauley propeller procedures are supplemented by Hartzell coverage for certain 182F installations, plus governor troubleshooting and control rigging.

Overhaul limits: Complete engine overhaul requires separate engine-manufacturer publications; Bendix magneto overhaul also falls outside this manual's scope.

Fuel-System Configurations and Repair

Fuel-cell procedures distinguish U.S. Rubber US-907N, US-943, and US-932 cells from Goodyear BTC 37 and BTC 39 cells. Coverage includes repair restrictions, leak testing, fuel-vent checks, and auxiliary-pump disassembly and functional testing.

The 182 fuel-system illustrations identify the change at serial 18255786 and the SK182-38/SK182-41 retrofit configurations. These distinctions help mechanics match the installed fuel-system layout before selecting parts or troubleshooting a modified aircraft.

Instrument Diagnosis and Electrical Wiring

Instrument coverage addresses pitot-static systems, venturi- and engine-driven vacuum systems, the Cessna Economy Mixture Indicator, and wing-leveler rigging. Troubleshooting follows faults to the affected instrument; internal instrument repair requires specialist information and equipment.

Electrical sections distinguish generator and alternator systems, single and split bus arrangements, and lighting circuits. The appendix groups wiring diagrams by aircraft family, with wire and equipment tables; examples include the Ground Service Receptacle and Alternator System drawings.

The pitot-static cautions explain how air directed toward connected instruments can damage them. Alternator service notes identify diode damage from reversed battery polarity.

Electronic-system scope: Section 18 has been deleted from this edition and refers readers to separate Cessna electronic installation and service/parts manuals.

Specification and Data Preview

The manual provides torque tables for fine- and coarse-thread fasteners, model-specific oil and fuel capacities, control travels, cable tensions, and inspection limits. Servicing coverage includes lubrication, fuel-sump drainage, shimmy dampener fluid servicing, and engine-compartment cleaning.

Utility-system chapters address cabin heating, defrosting, ventilation, and oxygen-system testing. Painting coverage includes overall refinishing, touch-up work, and paint compatibility.

Aviation maintenance demands rigorous oversight and certified expertise, particularly for flight-control rigging and fuel-system work.

PDF Navigation and Wiring-Diagram Readability

The PDF has an OCR text layer, but search is incomplete in parts of the wiring appendix. Embedded bookmarks navigate the service sections and model-specific wiring groups; small wiring labels require zooming. This is one printable 810-page PDF, including eight front-matter pages with two 1977 change notices, 512 service-section pages, and the 290-page wiring appendix; blank pages are included in these totals.