Yanmar SD20, SD30 & SD31 Model Sail Drive Unit Marine Diesel Engine Repair Service Manual

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This Workshop Service Repair manual PDF download for the SD20, SD30 & SD31 Model Sail Drive Unit Yanmar Marine Diesel Engine has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to fully at every opportunity.

This Service Manual covers the Model SD20, 30 & 31 sail drive unit only. For service information on the GMC series & 3HMC marine diesel engine which drives it, please refer to the respective GM/HM Series Manuals.


APPLICABLE MODELS :

Yanmar Marine Diesel Engine

Sail Drive Unit
SD20, SD30 & SD31

1GM10-SD : Yanmar Saildrive Engine 9hp/6.7kW - EPB5547
2YM15-SD : Yanmar Saildrive Engine 14hp/10.3kW - EPB5547
3YM20-SD : Yanmar Saildrive Engine 21hp/16.2kW - EPB5547
3YM30-SD : Yanmar Saildrive Engine 29hp/22.1kW - EPB5547


TABLE OF CONTENTS :

CHAPTER 1 GENERAL
CHAPTER 2 DISASSEMBLY
CHAPTER 3 REASSEMBLY
CHAPTER 6 SHIM ADJUSTMENT (Gear Backlash Adjustment)
CHAPTER 5 BEARING & OIL SEAL REPLACEMENT
CHAPTER 6 TIGHTENING TORQUES FOR NUTS AND BOLTS
CHAPTER 7 ELECTRICAL WIRING
CHAPTER 8 MODIFYING, THE LING-REACH UNIT (Optional Parts)


MANUAL SPECIFICATION :

File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
Part Number : AOA5054-JC03
Total Pages : 87


This Service / Repair / Workshop Manual PDF Download contains specs, diagrams, actual real photo illustrations, and schemes. In addition to space savings, nice thing about having completly searcheble PDF files instead of a hard-printed manual is that you can use the Search feature in your PDF reader software (Adobe Acrobat) to find just what your looking for and just print out the exact pages you need or all manual easily. This is the same manual your local dealer will use when doing a repair. This is a must for the Do-It-Yourselfer! Saving Yourself $$$$$$ In Service Repair And Maintenance Costs !!!!

Instant Download means there is NO shipping costs or waiting for a CD or paper manual to arrive in the mail! You will receive this manual TODAY via Instant Download on completion of payment via our secure payment processor. We accept ALL major credit/debit cards/paypal.

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COVER
FOREWORD
CONTENTS
CHAPTER 1 GENERAL
1. Specifications
2. Sectional View & Names of Parts
3. Criteria for Replacing Parts
4. Disassembly and Reassembly Tools
5. Notes on Disassembly, Inspection and Reassembly
CHAPTER 2 DISASSEMBLY
1. Disassembling the Upper Gear Case
2. Disassembling the Lower Gear Case
CHAPTER 3 REASSEMBLY
1. Reassembling the Propeller Shaft Assembly
2. Reassembling the Pinion Shaft Assembly (Input Shaft)
3. Reassembling the Upper and Lower Gear Cases
4. Lubrication
5. Attaching the Folding Propeller
CHAPTER 6 SHIM ADJUSTMENT (Gear Backlash Adjustment)
1. Location of Adjustment Shims
2. Replacement Requiring Shim Adjustments
3. Adjusting the Upper Pinion Gap (T1)
4. Adjusting the Upper Gear Backlash (T2,T3&T4)
5. Adjusting the Lower Gear Backlash (T5,T6&T7)
CHAPTER 5 BEARING & OIL SEAL REPLACEMENT
1. Replacing the Upper Gear (A)&(B) Bearing
2. Replacing the Clutch Shaft, Dog Clutch & Needle Bearing
3. Replacing the Driving Shaft Bearing
4. Replacing the Propeller Shaft Bearing
5. Replacing the Propeller Shaft Oil Seal
6. Replacing the Lower Gear Case Needle Bearings
CHAPTER 6 TIGHTENING TORQUES FOR NUTS AND BOLTS
1. Tightening Torques for Nuts and Bolts
CHAPTER 7 ELECTRICAL WIRING
1. Electrical Wiring
2. Checking Rubber Seal Switch Operation
3. Electrical Wiring Diagram (A-Type Instrument Panel)
4. Electrical Wiring Diagram (B-Type Instrument Panel)
CHAPTER 8 MODIFYING, THE LING-REACH UNIT (Optional Parts)
1. General
2. Modification Method
BACK COVER

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Yanmar SD20, SD30 & SD31 Model Sail Drive Unit Marine Diesel Engine Repair Service Manual.pdf

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