WOODWARD GOVERNOR COMPANY ENGINE & TURBINE CONTROLS

OPERATING AND SERVICE MANUAL
BULLETIN BOOK No 37013A

54 Page Service and Repair Manual

TABLE OF CONTENTS
Title Page
SECTION I/GENERAL INFORMATION AND INSTALLATION
Parts Cleaning
Introduction Parts Check
General Information  Parts Repair
Overspeed  Assembly
Installation  Testing
Speed Adjustment
Speed Droop

SECTION IV/REPLACEABLE PARTS
Initial Operation and Adjustment  Introduction
Storage  Replacement Parts Information
Illustrated Parts Breakdown

SECTION II/PRINCIPLES OF OPERATION
I ntroduction  SECTION V/AUXILIARY EQUIPMENT
Operation  Introduction
Spring Driven-Oil Damped Ballhead

SECTION III/MAINTENANCE
Torsion Spring
Introduction Pneumatic Speed Setting
Troubleshooting
Speed Adjusting Motor
Speed Droop Adjustment Externally Adjusted Speed Droop
Removal of Governor from Engine
Internal Return Spring
Tools for Disassembly & Assembly
Temperature Compensated Needle Valve
Disassembly of Governor
Fuel Rod

LIST OF ILLUSTRATIONS
Figure Title Page Figure Title Page
1-1 External Features of Basic PSG 1 3-16 Buffer System Assembly
1-2 Outline Drawing, Basic PSG 4 3-17 Power Piston Assembly
2-1 Cutaway Schematic, Basic PSG 6 3-18 Ballhead Installation
2-2 Schematic Diagram, PSG with 3-19 Thrust Bearing & Speede
External Return Spring 7 Spring Parts
3-1 Droop Adjustment Thrust Bearing & Spring Seat Assembly
3-2 Assembly Tools  Spring Seat Adjustment
3-3 Terminal Shaft Removal  Centering the Pilot Valve Plunger
3-4 Speeder Spring Removal Torquing Lock Nut
3-5 Pilot Valve Disassembly  Centering Pilot Valve Plunger
3-6 Removal of Ballhead  Speeder Spring Installation
3-7 Check Valve Assembly  Terminal Lever & Terminal Shaft
3-8 Honing Idler Gear  Parts Layout
3-9 Honing Pilot Valve Bushing Gear  Droop Bracket Assembly
3-10 Plugs Inserted for CCW Rotation  Setting Zero Droop
3-11 Plugs Inserted for CW Rotation  Speed Adjusting Parts Layout
3-12 Pilot Valve Bushing Assembly  Speed Adjusting & Floating
3-13 Compensating Bushing Assembly  Lever Assembly
3-14 Seating Retaining Ring  Bending Spring Wire Pin
3-15 Base to Case Assembly Seal Installation

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