1953–1962 Cessna 150, 172, 175, 180, 182, and 185 Series Skyhawk, Skylark, Skylane, Skywagon Single-Engine Aircraft Service Manual (P/N D-138-13-GRIT-1500-2/1/62)

• Complete 506-page original OEM publication D-138-13-GRIT-1500-2/1/62, published February 1, 1962
• Covers 1953–1962 Cessna 150, 172, 175, 180, 182, and 185 single-engine aircraft
• Includes Skyhawk, Skylark, Skylane, and Skywagon variants
• Contains 47 exploded-view diagrams detailing airframe, landing gear, and cabin components
• Features 20 sections spanning general descriptions, ground handling, fuselage, and structural repair
• Outlines troubleshooting procedures, 100-hour inspection checklists, flight control rigging, hydraulic brake bleeding, and powerplant overhauls
• Details electrical wiring diagrams, fuel injection systems, McCauley propeller governors, pitot-static instruments, and vacuum system hardware

Operational and Maintenance Coverage

This PDF service manual documents factory procedures for ground handling, servicing, lubrication, and inspection. Mechanics can reference clear guidance for the entire 150 through 185 lineup to streamline shop operations. It details fuselage component teardowns, highlighting window installations, cabin doors, and seating mechanisms.

For DIYers and independent facilities aiming to avoid expensive professional service fees, the guide provides clear step-by-step instructions for complex tasks. Technicians can confidently tackle wheel bearing repacking, nose gear shimmy dampener servicing, hydraulic brake bleeding, and flight control calibration. Sections four and five focus on airframe and landing gear maintenance. You will find comprehensive diagrams for wing structures, tail sections, and shock strut servicing. To further assist with deep diagnostics, the content features precise troubleshooting charts, servicing and lubrication charts, reference stations drawings, main wheel alignment shims charts, and an electrical symbols chart. The documentation also outlines structural repair criteria alongside exterior painting requirements. This equips restoration shops with the exact factory references needed to maintain historic airframes.

Avoiding common maintenance pitfalls is crucial when working on these vintage aircraft. For example, when correcting a wing-heavy condition, a technician must rotate the eccentric wing-adjustment bushings simultaneously; rotating them separately destroys the alignment of the off-center bolt holes, which exerts a dangerous shearing force on the bolt and risks permanent damage to the wing spar.

Specification Highlights

Technical data covers aircraft weight, engine model variants, and wheel alignment parameters. Main gear positive camber ranges from 3° to 7°, depending on the specific model and serial number.

The manual lists precise torque values. Recommended fine-thread torque for 1/4-28 tension-type nuts is specified at 50–70 inch-pounds. Nose gear shock strut inflation sits at 35 psi for the Model 150 and 50 psi for the Model 182. Reference stations are provided in Section 1 to assist in precise positioning during maintenance. As with all historic aviation documents, the data shown in this overview is for reference only. Certified technicians must verify all procedures directly against the full OEM publication before initiating any hands-on shop work.