sky-tec 149-24HT Maintenance Manual

Aircraft starter

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ST1005

Rev. NEW: 05 Dec. 2022

AIRCRAFT STARTER

MAINTENANCE MANUAL

P/N

STARTER MODELS

122-12HT

122-HT/EC

149-12HT

149-HT/EC

149-12HTL

149-12HT-H

149-12HT-H2

ST1005

122-24HT

149-24HT

149-24HTL

149-24HT-NC

149-24HT-H

149-24HT-H4

Aircraft Starter

Maintenance Manual

80-10-01

Page: i

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Summary of Contents for sky-tec 149-24HT

Page 1 Aircraft Starter Maintenance Manual AIRCRAFT STARTER MAINTENANCE MANUAL ST1005 STARTER MODELS 122-12HT 122-24HT 122-HT/EC 149-24HT 149-12HT 149-24HTL 149-HT/EC 149-24HT-NC 149-12HTL 149-24HT-H 149-12HT-H 149-24HT-H4 149-12HT-H2 ST1005 80-10-01 Rev. NEW: 05 Dec. 2022 Page: i © 2022 - Hartzell Engine Technologies - All rights reserved...
Page 3: Table Of Contents
2.2 Basic Component Description .......................2-1 2.3 Technical Purpose .........................2-1 2.4 Physical Detail ..........................2-1 2.5 Theory of Operation ........................2-1 2.6 Operational Data..........................2-2 122-12HT / 149-12HT ......................2-2 122-24HT / 149-24HT ......................2-2 C. Duty Cycle ..........................2-2 ST1005 80-10-01 Rev. NEW: 05 Dec. 2022 Page: iii ©...
Page 4 Aircraft Starter Maintenance Manual CHAPTER 3 - TROUBLESHOOTING ....................3-1 3.1 General ............................3-1 3.2 Procedure ............................3-1 CHAPTER 4 - CHECK ...........................4-1 4.1 General ............................4-1 4.2 Inspection Checks .........................4-1 CHAPTER 5 - TEST & CHECK ......................5-1 5.1 General ............................5-1 5.2 Testing ............................5-1 Equipment ..........................5-1 Test conditions ........................5-1 C.
Page 5 Aircraft Starter Maintenance Manual Thank you for purchasing a Sky-Tec* starter. We encourage you to read this manual thoroughly. It contains a wealth of information about how to properly install and maintain your starter so that it may give you many years of safe and reliable service.
Page 7: Record Of Revisions
Aircraft Starter Maintenance Manual Record of Revisions Issue Page Revision Date Description Date Revised Letter New Release 12/05/2022 ST1005 80-10-01 Rev. NEW: 05 Dec. 2022 Page: vii © 2022 - Hartzell Engine Technologies - All rights reserved...
Page 8: Service Documents
Aircraft Starter Maintenance Manual Service Documents Service Service Date Document Description Document Incorporated Number Revision 80-10-01 ST1005 Page: viii Rev. NEW: 05 Dec. 2022 © 2022 - Hartzell Engine Technologies - All rights reserved...
Page 9: Airworthiness Limitations
Aircraft Starter Maintenance Manual AIRWORTHINESS LIMITATIONS General Information CAUTION! THE AIRWORTHINESS LIMITATIONS HEREIN ARE THOSE MANDATED BY HARTZELL ENGINE TECHNOLOGIES. THESE LIMITATIONS ARE THE MINIMUM REQUIRED TO MEET CONTINUED AIRWORTHINESS BUT MAY BE SUPERSEDED BY MORE STRINGENT REQUIREMENTS AS PUBLISHED BY THE FAA, AIRCRAFT, ROTORCRAFT OR OTHER MANUFACTURERS THAT USE THESE COMPONENTS IN THEIR APPLICATIONS.
Page 10: Life Limits
Aircraft Starter Maintenance Manual Life Limits A. The FAA establishes specific life limits for certain component parts as well as the complete starter assembly. Such limits require replacement of the identified parts after a specified number of cycles or hours of use. B.
Page 11: Chapter 1 - Introduction
Aircraft Starter Maintenance Manual CHAPTER 1 - INTRODUCTION General Information WARNING! IMPROPER OR UNAUTHORIZED APPLICATIONS OF THE INFORMATION CONTAINED IN THE MANUAL MAY RENDER THE AIRCRAFT OR THE COMPONENT UNAIRWORTHY AND RESULT IN LOSSES, DAMAGES, OR INJURY TO THE USER. DO NOT USE OBSOLETE OR OUTDATED INFORMATION.
Page 12: General Specification (Manual)
A. This manual follows general GAMA guidelines using ATA 100 identification as required. Principle units of measure used in the manual are U.S. units with International System of Units (SI) in parentheses. B. The 122-12HT, 122-24HT, 122-HT/EC, 149-12HT, 149-24HT, 149-12HTL, 149-24HTL, 149-HT/EC, 149- 12HT-H, 149-24HT-H, 149-24HT-NC, 149-12HT-H2, and 149-24HT-H4 starter models are considered herein.
Page 13: Measurements
Aircraft Starter Maintenance Manual Measurements The measurements given in this manual are taken from original manufacturing drawings. Units of Measure A. SI Units Ampere A ∙ h Ampere hours Gram Newton N ∙ m Newton meter Volt °C Degree Celsius Ω...
Page 14: Abbreviations
Aircraft Starter Maintenance Manual Abbreviations A. The abbreviations given below are used in the manual: (upper or lower case) Air Transport Association of America Drive End (housing) Diameter Federal Aviation Administration (USA) FIG. Figure GAMA General Aviation Manufacturers Association Illustrated Parts Catalog Inside Diameter Hartzell Engine Technologies LLC Maximum...
Page 15: Disposal
Disposal of unairworthy parts and assemblies as well as required replacement parts should be as follows: Rejected parts should be tagged and scrapped per FAA requirements. Any part deemed unairworthy must be rendered unusable prior to discard. Model Identification 122-12HT 122-24HT 122-HT/EC 149-24HT...
Page 16: Serial Number Identification
Aircraft Starter Maintenance Manual 1.10 Serial number Identification Year Code Month Code Batch Code Example above: 2010, May, first unit of the month (batch). The year code advances one letter in alphabetical order for each succeeding year. 1.11 Warranties A. Hartzell Engine Technologies LLC (HET) offers a Limited warranty with each new or rebuilt starter assembly or component (parts) it sells through it’s distribution system.
Page 17: Shelf Life
Aircraft Starter Maintenance Manual If it is anticipated or determined that the aircraft will be in a long term storage situation, as soon as practicable, wipe and spray the outside of the starter with preservative oil, start engine using starter at an interval of sixty (60) days.
Page 19: Chapter 2 - Description Of Operation
CHAPTER 2 - DESCRIPTION OF OPERATION General A. Sky-Tec starters listed herein are designed as lightweight, direct-mounting, and energy-efficient. These starters reduce current draw which attributes to the long life of the starter. The internal gear drive multiplies armature torque and employs a slip disc clutch design for kickback protection.
Page 20: Operational Data
As soon as the engine starts, the pinion disengages from the flywheel and remains dormant until the next starting event is requested. Operational Data A. 122-12HT / 149-12HT Weight 8.9 lbs Voltage...
Page 21 Aircraft Starter Maintenance Manual Fig. 2-1 - Typical 149-12HT / 24HT Starter (Basic Components) Mount Assembly Drive Assembly Idler Gear and Clutch Assembly Solenoid/Motor Assembly ST1005 80-10-01 Rev. NEW: 05 Dec. 2022 Page: 2-3 © 2022 - Hartzell Engine Technologies - All rights reserved...
Page 22 Aircraft Starter Maintenance Manual Fig. 2-2A - 149-12HT / 24HT Fig. 2-2B - 149-12HT / -24HT .47 Pinion Travel Fig. 2-2C - 149-12HT, -24HT ST1005 80-10-01 Page: 2-4 Rev. NEW: 05 Dec. 2022 © 2022 - Hartzell Engine Technologies - All rights reserved...
Page 23 Aircraft Starter Maintenance Manual Fig. 2-3 Ring Gear Check Gage Contact Hartzell Engine Technologies’ Product Support Team to aquire a ring gear check gage. ST1005 80-10-01 Rev. NEW: 05 Dec. 2022 Page: 2-5 © 2022 - Hartzell Engine Technologies - All rights reserved...
Page 25: Chapter 3 - Troubleshooting
Aircraft Starter Maintenance Manual CHAPTER 3 - TROUBLESHOOTING General A. It should not be assumed that the starter is at fault prior to employing proper troubleshooting procedures. The overall objective of troubleshooting is to find the cause of trouble and take corrective action to prevent a recurrence.
Page 26 Aircraft Starter Maintenance Manual WARNING! THE FOLLOWING STEP ENERGIZES THE MASTER AND STARTER RELAYS THAT WILL CAUSE THE PROPELLER TO ROTATE. REMAIN CLEAR OF THE PROPELLER TO PREVENT PERSONAL INJURY OR DEATH. Energize the master switch and connect the VOM probes between the input terminal of starter and the airframe ground (C).
Page 27: Chapter 4 - Check
Aircraft Starter Maintenance Manual CHAPTER 4 - CHECK General A. This section defines the various checks and inspections needed to assure reliable and safe operation of the starter while in service. They are listed in hours for time in service (TIS) or in calendar time, whichever is applicable and are the first to occur when offered a choice.
Page 29: Chapter 5 - Test & Check
Aircraft Starter Maintenance Manual CHAPTER 5 - TEST & CHECK General A. This chapter outlines the no-load test to determine the condition of the starter removed for scheduled and unscheduled maintenance. Refer to the procedures given in Troubleshooting, Chapter 3, prior to applying any test for maintenance.
Page 30: Precautions
Aircraft Starter Maintenance Manual C. Precautions Regular maintenance must be accomplished per this manual and per the applicable aircraft and/ or engine service manuals and publications. In addition, observe the following precautions: DISCONNECT THE BATTERY before connecting or disconnecting test instruments (except voltmeter), or before removing or replacing any unit or wiring.
Page 31 Aircraft Starter Maintenance Manual Momentary Shunt Push-Button (100 Amp) Rheostat DC Supply (or Battery) Figure 5-1 - Starter Test Set-up ST1005 80-10-01 Rev. NEW: 05 Dec. 2022 Page: 5-3 © 2022 - Hartzell Engine Technologies - All rights reserved...
Page 33: Chapter 6 - Maintenance
Aircraft Starter Maintenance Manual CHAPTER 6 - MAINTENANCE General A. This chapter contains information regarding recommended maintenance for all starters listed in this manual. These recommendations assure reliable and safe operation of the starter while in service. B. The starters found herein are an accessory designed to be a replacement component. HET recommends a replacement starter as the most economic means of repair.

sky-tec 149-24HT Maintenance Manual

Chapter 1 - Introduction

Chapter 2 - Description of Operation

Chapter 3 - Troubleshooting

Chapter 4 - Check

Chapter 5 - Test & Check

Chapter 6 - Maintenance

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