3TNV88 400901-00022 Diesel Engine Assembly Compatible with Doosan

1. Product Overview & Wholesale Price Range

The 400901-00022 3TNV88 Diesel Engine Assembly is a complete power unit for DH35Z mini excavator, fully assembled and tested for direct replacement during engine overhaul.

• Factory Wholesale Price: $1280 – $3650 USD (Direct manufacturer pricing — Save up to 50% vs regional dealer markups)
• Component Type: Complete Diesel Engine Assembly
• MPN: 400901-00022
• OEM Part Number: 400901-00022
• MOQ & Bulk Discount: 1 Unit (Tiered wholesale discounts available for repair shop & distributor batch orders)
• Lead Time: 3–7 business days (Large factory stock ready for immediate worldwide dispatch)
• Warranty: 12 Months full replacement warranty with power performance test guarantee

2. Application Worksite Checklist

Engineered with reliable power structure and sealed assembly, to withstand harsh construction site conditions:

• Mini Excavator Power Supply: Stable power output for DH35Z mini excavator digging, loading and earthmoving work.
• Urban Small Construction Jobs: Compact engine structure, low vibration, suitable for narrow space construction operation.
• Long-Hour Continuous Operation: Good heat dissipation design ensures stable running under multi-shift heavy load.
• Engine System Overhaul: Complete assembly can directly replace old engine to save overhaul time and labor cost.

3. Diesel Engine Troubleshooting & Diagnostic Guide

If your machinery engine system is exhibiting engine-related failure, consult the diagnostic guide below:

• Fault 1: Engine Hard To Start Or Cannot Start
  Root Cause: Worn internal engine parts, fuel system failure.
  Solution: Replace with new 3TNV88 engine assembly, check fuel pipeline and filter.
• Fault 2: Engine Power Drop & Weak Output
  Root Cause: Internal cylinder wear, compression loss.
  Solution: Install new 400901-00022 engine assembly and test power output.
• Fault 3: Heavy Black Smoke Exhaust During Operation
  Root Cause: Poor cylinder sealing, abnormal fuel combustion.
  Solution: Replace complete engine assembly and inspect exhaust system.
• Fault 4: Engine Rough Idle & Big Vibration
  Root Cause: Internal crankshaft and connecting rod wear, imbalance.
  Solution: Replace engine assembly before pursuing expensive internal engine repairs.
• Fault 5: Engine Oil Leakage
  Root Cause: Aging gaskets and sealing parts after long time operation.
  Solution: Replace complete engine assembly to avoid repeated oil leakage trouble.

4. Hot Machinery Replacement Parts Recommendation

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

5. Frequently Asked Questions & Technical Support

Q1: How do I verify if 400901-00022 engine assembly fits my machinery?
A: Check your original engine model. Send machine serial number to us for quick fitment check.

Q2: What is included in this 3TNV88 engine assembly?
A: Complete assembled engine unit, ready for installation. Please contact us for detailed parts list.

Q3: What should I note during engine installation?
A: Drain old oil and coolant before replacement, connect pipeline correctly, test run after installation.

Q4: Is this engine assembly suitable for long time heavy load work?
A: It adopts strict factory testing, reliable internal structure, anti-vibration design, suitable for construction site heavy load operation.