This Yanmar YDP Series Industrial Diesel Engine Service Manual describes the proper procedure for disassembly, reassembly and servicing for YANMAR PUMP YDP series, Centrifugal pump, Semi-trash pump, Trash pump, and Diaphragm pump with air-cooled diesel engine and also gives guidance for routine servicing. It is hoped that this manual will help Yanmar pump servicemen become fully acquainted with the product, and thereby enhance their service activities.
CONTENTS
YDP series Centrifugal Pump, Semi-Trash and Trash Pump
1. Specifications . . 1
2. Pump performance . 3
3. Exploded view . . 4
4. Service information 7
4-1. General safety . . 7
4-2. Engine serial number and pump lot number location 7
4-3. Service rules 7
4-4. Tools . 8
4-5. Tightening torque . . 9
4-6. Maintenance schedule 10
5. Disassembly and reassembly 11
6. Checking and servicing . . 15
7. Test run 17
8. Troubleshooting . . 18
Appendix 1. Technical material . 19
Diaphragm Pump: YDP20DN and YDP30DN
1. Specifications . 22
2. Pump performance 23
3. Exploded view . 24
4. Service information . . 25
4-1. General safety . 25
4-2. Engine serial number and pump lot number location . . 25
4-3. Service rules . . 25
4-4. Tools 26
4-5. Tightening torque . 26
4-6. Maintenance schedule 27
5. Disassembly and reassembly 28
6. Checking and servicing . . 30
7. Test run 31
8. Troubleshooting . . 32
1. Specifications . . 1
2. Pump performance . 3
3. Exploded view . . 4
4. Service information 7
4-1. General safety . . 7
4-2. Engine serial number and pump lot number location 7
4-3. Service rules 7
4-4. Tools . 8
4-5. Tightening torque . . 9
4-6. Maintenance schedule 10
5. Disassembly and reassembly 11
6. Checking and servicing . . 15
7. Test run 17
8. Troubleshooting . . 18
Appendix 1. Technical material . 19
Diaphragm Pump: YDP20DN and YDP30DN
1. Specifications . 22
2. Pump performance 23
3. Exploded view . 24
4. Service information . . 25
4-1. General safety . 25
4-2. Engine serial number and pump lot number location . . 25
4-3. Service rules . . 25
4-4. Tools 26
4-5. Tightening torque . 26
4-6. Maintenance schedule 27
5. Disassembly and reassembly 28
6. Checking and servicing . . 30
7. Test run 31
8. Troubleshooting . . 32
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