Hartzell Propeller Mechanical Governor Maintenance Manual 130B – A to V Series Overhaul Guide

Description

Hartzell Propeller Mechanical Governor Maintenance Manual 130B

This is the Hartzell Propeller Inc. Mechanically Actuated Governor Maintenance Manual 130B, the FAA-accepted overhaul and service reference for Hartzell mechanically actuated governors designed for single-acting propellers. Revision 17, issued December 2015, is the version reproduced here in full — all eight-hundred-plus pages of it, including every governing chapter, every service-data table, and the entire illustrated parts list.

Where Hartzell originally relied on Hamilton Standard governor overhaul and parts manuals, that dependency ended long ago. Today the 130B manual is the controlling document for Hartzell-built governors in the field, and this is that document, complete.

File Details

• Manual type: Component maintenance / overhaul manual
• Brand / publisher: Hartzell Propeller Inc., Piqua, Ohio
• Document number: 130B
• ATA reference: 61-23-30
• Revision: 17
• Issue date: December 2015
• Language: English
• File format: PDF
• Page count: 808 pages
• Intended audience: FAA Propeller Repairman or equivalent, with a minimum of 18 months of practical experience on Hartzell mechanically actuated governor overhaul

Chapters Covered

The manual is organised in the ATA iSpec 2200 format and its chapters map directly onto how a governor actually gets torn down and put back together.

• Introduction — Statement of Purpose, Required Publications, Personnel Requirements, Safe Handling of Paints and Chemicals, Calendar Limits and Long Term Storage, Component Life and Service, Definitions, Abbreviations
• Description and Operation — Theory of Operation (onspeed, underspeed, overspeed conditions), Governor Types (constant speed, feathering, feathering/unfeathering, synchronizing, synchrophasing), Model Designations, drive couplings and drive gear configurations
• Disassembly — Removal from the engine, per-series governor disassembly for A-1 through V-11 model series, General Governor Disassembly (body, base, spool assembly), T-drive disassembly, accumulator disassembly
• Cleaning — General procedures, steel parts for magnetic particle inspection, steel parts for cadmium replating, synchrophaser coils, threaded insert
• Check — Inspection Interval Requirements, Replacement Requirements, Damage evaluation (airworthy vs. unairworthy), Part Identification, and an extensive Component Inspection Criteria table covering drive gears, control shafts, control shaft bushings, racks, feather rods, spool extensions, idler gears, idler gear shafts, relief valve plungers and plugs, spools, angle drive gears, governor heads (many part numbers), governor bodies, governor bases, flyweights, drive couplings, coil assemblies, T-drive housings, valve bodies, RPM stop nuts, control levers, control arms, control arm hubs, cable brackets, torsion springs, accumulator cylinders, pistons, caps and drive extensions
• Repair — Head Unit (stud replacement, control shaft bushing replacement, threaded insert replacement), Body (rotation plug replacement, vent holes), Bases (stud replacement, rotation plug replacement), Lever Assembly, Rack Assembly, Idler Gear Shaft, Control Shaft Bushing, Synchrophaser Coil wire repair
• Assembly and Testing — General Assembly (base, body, spool assembly, head unit for each series and configuration), Final Assembly, Painting, full Testing procedures (relief valve pressure, low RPM setting, maximum RPM setting, pump capacity, internal leakage, external leakage, governor lever travel, unfeathering valve leakage, synchrophasing governors, test result tag), T-Drive Assembly, Accumulator Assembly, and installation of the governor assembly to the engine
• Specifications — Governor Specifications tables, Torque Chart, Governor Specifications – S Series table, control shaft location figures, control lever angle figures, head installation positions
• Special Tools, Fixtures, and Equipment — general special-tool guidance and test stand minimum requirements
• Illustrated Parts List — detailed parts lists and exploded figures for every covered governor model, plus T-drive assemblies and the 103161 accumulator

IMAGES PREVIEW

What This Manual Gives a Technician

The value of the 130B manual is not in any single chapter but in how tightly the chapters interlock. The Check chapter tells you exactly what a component must measure — minimum diameters, maximum bore sizes, maximum permitted wear depths, crack and corrosion rules, magnetic particle and penetrant acceptance criteria — and then hands off to the Repair chapter for the fix and back to Assembly and Testing for the run-in. Nothing is left to guesswork. Speeder spring part numbers are called out per governor model. Control lever angles are given per model. Threaded insert orientation, RPM stop nut hole position, return spring hole, internal plug location, drive ratio and rotation all appear as a single row in the S-Series specification table. Torque values are printed with both the English and metric figure. Where two spool or flyweight designs have been superseded, the manual tells you which design you have and what to do about it.

The manual also carries an FAA-approved Airworthiness Limitations section signed by Royace Prather, Manager of the Chicago Aircraft Certification Office, ACE-115C, dated March 12, 1998 — the regulatory anchor for the maintenance this document prescribes.

Covered Models

The manual addresses Hartzell mechanically actuated governor model series A, B, C, D, E, F, H, S, U and V, with individual part lists and figures for the specific variants within each series — for example A-1B and A-1C; B-2, B-3, B-3-1, B-3-2, B-3-4, B-4, B-4-1, B-4-2 and B-4-3; C-3 and C-4 variants; D-1-5, D-1-6, D-1-8 and D-1-9; the E-2, E-3, E-4, E-5, E-6 and E-8 families; the F-2, F-3, F-4, F-6 and F-8 families; H-1; the S-1, S-2, S-3, S-4, S-5 and S-11 configurations; U-3 and U-8; and V-1, V-2, V-3, V-4, V-5 and V-11. The S-Series specification table alone lists well over fifty individual governor models with their low/feather RPM, high RPM, pressure relief range, control arm hub position, head position, threaded insert orientation, RPM stop nut hole, return spring hole, internal plug location, control lever angle, drive ratio and rotation.

Covered Engines

The governor models in this manual are matched to a wide range of piston engines from Continental and Lycoming as well as a number of Franklin, Pratt & Whitney radial and specialised applications. Engine references appear throughout the application columns of the specification tables — Continental E-185, E-225, IO-360, IO-470, IO-520, IO-550, TSIO-360, TSIO-520, TSIO-550, GTSIO-520, Tiara series; Lycoming O-320, O-360, IO-360, IO-390, O-435, O-480, GO-480, O-540, IO-540, TIO-540, IO-720, IGSO-540, HIO-360 and AEIO aerobatic variants; Pratt & Whitney R-985 and R-1340; Franklin 6A-335 and 4A-235; and several experimental and airship installations.

Serial Numbers and Identification

Governor bodies and bases carry impression-stamped assembly serial numbers, and the manual directs readers to the Parts Identification and Marking chapter of the Hartzell Standard Practices Manual 202A (61-01-02) for the stamping conventions. This manual does not list production serial ranges — model identification is by part number and model designation on the data plate, not by serial block.

Why This Revision Matters

Revision 17 is not a cosmetic update. It added the S-11 Configuration 2 governor model to the Description, Disassembly and Assembly chapters. It added the drive gear P/N 102681 check criteria via TR-026, and the Speeder Compression Spring to Table 5-1. It added S-11 series repair criteria. It revised the torque chart and the S-Series governor specification table, incorporated TR-027, TR-028, TR-029 and TR-030 to add or revise governor models including S-1-21, S-1-68, S-1-73, S-1-79, S-4-3, S-4-4, S-11-1X2 and S-11-2X. It replaced C-3317-112-7 with C-3317-112-10 for the S-1 and S-4 series under HC-SB-61-365. It removed washer part number C-3317-112-6 from the head unit assembly for a long list of S-1 models. Every one of those changes is in this copy.

Illustrated Parts Lists

The IPL chapter runs for more than two hundred pages and contains exploded assembly drawings for each covered governor, plus T-drive assemblies (C-137 variants and C-192 variants) and the 103161 accumulator. Every parts list uses the same consistent columns — Figure/Item Number, Part Number, Description, Effectivity Code, Units Per Assembly and an Overhaul column where a Y entry marks parts that must be replaced at every overhaul. That last column alone can save a shop from reusing a bearing, cotter pin or gasket that Hartzell says must come out.

What You Can Do With This Manual

With the 130B manual in front of you, you can completely disassemble a Hartzell mechanically actuated governor from any of the covered model series, clean the components to the correct specification, dimensionally inspect them against published serviceable limits, decide whether each part is airworthy, repairable or scrap, perform the approved repairs — stud replacement, bushing replacement, threaded insert replacement, rotation plug replacement, rack assembly rebuilding, valve pin lapping — reassemble the governor to the correct torques and control settings, and then test it on an approved governor test stand to verify relief valve pressure, low RPM, maximum RPM, pump capacity, internal leakage, external leakage and lever travel. Every step is documented, and the acceptance values are printed as numbers you can measure against, not as approximate guidance.

For a propeller shop, an engine overhaul facility or an A&P working on a Hartzell-equipped aircraft, that combination of procedures and hard limits is what makes an overhaul repeatable — which is exactly what an airworthiness sign-off demands. Guessing at control lever angles, relief spring lengths or flyweight wear limits is not an option. This manual removes the guesswork.

How You Receive It

The manual is delivered as an instant PDF download after checkout. No shipping, no waiting for a parcel, no customs delay. The file opens on any laptop, tablet or phone and can be printed page-for-page if you prefer a paper copy on the bench. Keep it on a shop computer, a tablet at the test stand, or both. Buy once, use it on every governor you overhaul.