SK30SR SK35SR EX27U EX35 3LD1 3LD2 Isuzu 3LD1 Complete Diesel Engine Assembly Compatible with Isuzu Kobelco Hitachi

1. Product Overview & Wholesale Price Range

The Isuzu 3LD1 / 3LD2 Complete Diesel Engine Assembly (OEM Part # 3LD1 / 3LD2 / 8-97100-000-0) is a 3-cylinder 1.5-liter liquid-cooled direct-injection diesel motor engineered for 3-to-3.5-ton compact excavators operating under continuous trenching, landscaping, and foundation digging works.

• Factory Wholesale Price: $2,200 – $4,200 USD (Direct manufacturer pricing — Save up to 50% vs regional dealer markups)
• MOQ & Bulk Discount: 1 Unit (Tiered wholesale discounts available for batch container orders)
• Lead Time: 1–3 business days (Large factory stock ready for immediate worldwide dispatch)
• Warranty: 12 Months full replacement warranty with 100% dynamometer load testing video proof

2. Application Worksite Checklist (施工场景清单)

Engineered for low vibration and fuel efficiency across compact excavator field applications:

• Urban Pipe Trenching & Cable Laying: Smooth idle stability and quiet rotation for narrow ditch digging with Kobelco SK30SR zero-tail excavators.
• Residential Landscaping & Gardening: Consistent power output under continuous swing and travel cycles for earth grading and tree planting.
• Agricultural Irrigation & Farm Clearing: Heavy-duty cooling circulation prevents engine overheating during hot summer farm ditching.
• Building Renovation & Small Demolition: Forged crankshaft withstands continuous vibration from small hydraulic breaker hammer attachments.

3. Diesel Engine Troubleshooting & Diagnostic Guide (发动机常见故障排查)

If your 3-ton mini excavator is exhibiting engine power loss or mechanical breakdown, consult the diagnostic guide below:

• Fault 1: Black Exhaust Smoke Under Heavy Digging Load & Power Drop (重载剧烈黑烟/整车无力)
  Root Cause: Worn mechanical fuel injection pump plungers, clogged nozzle tips, or low cylinder compression.
  Solution: Inspect fuel pump pressure and replace with a pre-tested complete Isuzu 3LD1 engine assembly.
• Fault 2: Milky Engine Oil & Coolant-Oil Emulsification in Radiator (机油发白乳化/水箱串油)
  Root Cause: Corroded cylinder liner seals, cracked cylinder head casting, or blown head gasket.
  Solution: Replace head gasket / head casting or swap with a complete drop-in engine unit for immediate work restoration.
• Fault 3: Abnormal Metallic Knocking Noise From Engine Block (引擎敲缸异响)
  Root Cause: Excessive oil clearance on connecting rod bearings or piston pin gudgeon bushing wear.
  Solution: Replace connecting rod bearings or install a pre-tested complete 3LD1 engine assembly.
• Fault 4: Heavy Blow-By Gas & White Oil Smoke Blowing From Filler Cap (机油盖剧烈冒烟吹气)
  Root Cause: Broken piston rings, severe cylinder wall scuffing, or stuck compression ring grooves.
  Solution: Perform a complete engine overhaul or install a new complete power assembly.
• Fault 5: Engine High Coolant Temperature Overheating Under Operation (高温开锅/水温过高)
  Root Cause: Clogged water pump impeller, stuck thermostat, or cracked cylinder head gasket blowing gas into cooling system.
  Solution: Check coolant circulation pump and replace head gasket or replace complete power unit.

4. Hot Machinery Replacement Parts Recommendation (5大品类热门推荐表)

Explore our factory-direct replacement components compatible with major global excavator brands:

5. Frequently Asked Questions & Technical Support (QA 问答专区)

Q1: How do I verify if this Isuzu 3LD1 engine fits my Kobelco SK30SR excavator?
A: Check your original engine nameplate for 3LD1 or 3LD2 stamp. You can also send us photos of your engine flywheel housing and oil pan mounting holes for instant fitment verification.

Q2: My Kobelco SK30SR excavator emits heavy black smoke and lacks digging power. Will replacing this 3LD1 engine fix it?
A: Yes, heavy black smoke under load indicates severe fuel injection pump, injector nozzle, and cylinder compression wear. Installing our complete pre-tested Isuzu 3LD1 engine restores 100% factory power.

Q3: Is this Isuzu 3LD1 / 3LD2 engine assembly dyno tested before shipment?
A: Yes, every single engine assembly undergoes a 2-hour dynamometer load bench test verifying oil pressure, coolant temperature, and horsepower curve. A live test video is provided before shipping.