Generic 75mm Bore Replacement Piston Instruction Manual

การแนะนำ

This manual provides essential information for the installation and care of your Generic 75mm bore replacement piston. This piston is designed as an aftermarket replacement for specific Yanmar engine and tractor models, ensuring compatibility and reliable performance. It is crucial to follow all instructions carefully to ensure proper function and longevity of the component and the engine.

ข้อมูลด้านความปลอดภัย

คำเตือน: Engine repair and component replacement should only be performed by qualified personnel or experienced mechanics. Improper installation can lead to severe engine damage, personal injury, or death.

• สวมอุปกรณ์ป้องกันภัยส่วนบุคคล (PPE) ที่เหมาะสมอยู่เสมอ รวมถึงแว่นตาและถุงมือเพื่อความปลอดภัย
• Ensure the engine is completely cool and disconnected from any power source before beginning work.
• ใช้เครื่องมือที่เหมาะสมกับงานเท่านั้น
• Refer to the original equipment manufacturer's (OEM) service manual for specific torque specifications and detailed engine disassembly/assembly procedures.
• รักษาพื้นที่ทำงานให้สะอาดและปราศจากเศษขยะ
• กำจัดชิ้นส่วนและของเหลวเก่าอย่างถูกวิธี

เนื้อหาแพ็คเกจ

ตรวจสอบว่าชิ้นส่วนทั้งหมดครบถ้วนและไม่เสียหายเมื่อได้รับสินค้า:

• 1 x 75mm Bore Piston
• 1 x Piston Pin
• 2 x Piston Pin Clips (Circlips)

ภาพ: ด้านบน view of the 75mm replacement piston, showing the piston crown and ring grooves, along with two piston pin clips.

การตรวจสอบก่อนการติดตั้ง

Before installing the new piston, perform the following checks:

1. ตรวจสอบความเข้ากันได้: Confirm that the piston's bore size (75mm) and part numbers (121575-22090, 121550-22090) match the requirements for your Yanmar 3T75 engine or YM220, YM226, YM250, YM1810 tractor model.
2. ตรวจสอบส่วนประกอบ: Carefully examine the new piston, pin, and clips for any manufacturing defects, damage, or foreign material.
3. Cylinder Bore Inspection: Ensure the cylinder bore is clean, free of scoring, and within specified tolerances. Honing may be required.
4. Piston Ring Fitment: Although piston rings are not included with this specific part, if you are installing new rings, ensure they are correctly gapped and fit properly in the piston grooves and cylinder bore.

ภาพ: ด้านล่าง view of the 75mm replacement piston, highlighting the internal structure and the bore for the piston pin.

แนวทางการติดตั้ง

These are general guidelines. Always consult your engine's specific service manual for detailed, model-specific instructions.

1. ความสะอาด : Maintain absolute cleanliness throughout the installation process. Any dirt or debris can cause premature wear.
2. การหล่อลื่น: Lightly lubricate the piston skirt, piston pin, and cylinder bore with clean engine oil before assembly.
3. Piston Ring Installation (if applicable): If installing new piston rings, ensure they are installed in the correct order and orientation, paying attention to any "TOP" markings. Stagger ring gaps according to the service manual.
4. Piston Pin and Clips: Install the piston pin into the connecting rod and secure it with the provided clips. Ensure the clips are fully seated in their grooves.
5. Piston Orientation: Note any directional markings on the piston crown (e.g., an arrow or "FRONT") and ensure it is oriented correctly towards the front of the engine.
6. Connecting Rod Bearing: Ensure the connecting rod bearing is properly seated and lubricated before attaching the connecting rod to the crankshaft.
7. ข้อมูลจำเพาะแรงบิด: Tighten all fasteners, especially connecting rod bolts, to the exact torque specifications provided in your engine's service manual. Use a calibrated torque wrench.
8. Clearance Checks: After assembly, manually rotate the crankshaft to ensure smooth movement and check for any binding or interference.

ภาพ: ด้านข้าง view of the 75mm replacement piston, showing the piston pin bore and ring grooves, accompanied by two piston pin clips.

การซ่อมบำรุง

Proper engine maintenance is crucial for the longevity of your new piston and overall engine health:

• การเปลี่ยนถ่ายน้ำมัน: Adhere strictly to the manufacturer's recommended oil change intervals and use the specified type of engine oil.
• ตัวกรองอากาศ: Regularly inspect and replace the air filter to prevent contaminants from entering the engine.
• ระบบเชื้อเพลิง: Ensure the fuel system is clean and free of contaminants.
• ระบบระบายความร้อน : Maintain the cooling system to prevent engine overheating, which can damage pistons and other components.
• ระยะเวลาการปรับตัว: Follow any recommended engine break-in procedures after major engine work to allow new components to seat properly.

การแก้ไขปัญหา

If you experience issues after piston replacement, consider the following common causes:

For complex issues, always seek assistance from a certified mechanic or engine specialist.

ข้อมูลจำเพาะ

• ประเภทชิ้นส่วน: Replacement Piston
• เส้นผ่านศูนย์กลางรูเจาะ: 75 มม.
• รวมถึง: Piston, Piston Pin, 2 Piston Pin Clips
• Compatible Yanmar Engines: 3T75
• Compatible Yanmar Tractors: YM220, YM226, YM250, YM1810
• ใช้แทนหมายเลขชิ้นส่วน OEM: 121575-22090, 121550-22090
• หมายเลขชิ้นส่วนของผู้ผลิต: UlJ-96L182

ข้อมูลการรับประกัน

As an aftermarket replacement part, this piston is typically covered by the warranty provided by the seller or the aftermarket manufacturer, not by Yanmar OEM. Please refer to your purchase documentation or contact the seller (RepairPart) for specific warranty terms and conditions. Keep your proof of purchase for any warranty claims.

สนับสนุน

For technical assistance, installation questions, or troubleshooting beyond the scope of this manual, please:

• Consult a certified engine mechanic or tractor repair specialist.
• Refer to the official Yanmar service manual for your specific engine or tractor model.
• Contact the seller (RepairPart) directly through your purchase platform for product-specific inquiries.