D8K 135011 135023 135030 135045 Engine Crankshaft Compatible with Caterpillar

1. Product Overview & Wholesale Price Range

The D8K Alloy Steel Engine Crankshaft (OEM Part # 135011 / 135023 / 135030 / 135045) is heavy‑duty replacement shaft for D8K diesel engine, widely used on construction machinery under continuous heavy load operation.

• Factory Wholesale Price: $420 – $860 USD (Direct manufacturer pricing, save cost for engine repair shops)
• Material Specifications: High‑strength alloy steel, induction hardened journals (HRC 54‑60), excellent wear resistance
• MOQ & Bulk Discount: 1 Unit, bulk discount for batch overhaul orders
• Lead Time: 1‑3 working days, large stock for global shipment
• Warranty: 12‑month replacement warranty, dynamic balance & crack inspection before delivery

2. Application Worksite Checklist

Built for high‑torque, heavy‑load jobsite working conditions:

• Earthmoving & Quarry Operation: Hardened journals reduce abrasion under long‑hour continuous engine running.
• Road Construction & Site Grading: Precision dynamic balancing reduces engine vibration, protect bearings and oil seals.
• Mining & Heavy Demolition: High‑tensile alloy steel resists fatigue cracking caused by impact shock loads.
• Engine Overhaul Rebuild: Direct replacement for worn, scored or fractured original crankshaft for engine repair.

3. Engine Crankshaft Troubleshooting & Diagnostic Guide

When your D8K engine has crankshaft‑related failure symptoms, check below common faults:

• Fault 1: Journal Scoring & Deep Groove Wear
  Root Cause: Dirty engine oil, oil supply shortage, metal impurities scratch shaft journals.
  Solution: Replace complete new D8K crankshaft OEM 135011 instead of repairing worn shaft.
• Fault 2: Engine Knocking Noise & Bearing Burnout
  Root Cause: Bearing clearance over limit after long service hours, bearing spinning damage rod journal.
  Solution: Install new D8K crankshaft together with matched main & rod bearing shells.
• Fault 3: Crankshaft Fatigue Crack or Fracture
  Root Cause: Engine overloading, improper torsional damper or flywheel bolt torque issue.
  Solution: Fit our heavy‑duty alloy steel D8K crankshaft with reinforced fillet radius.
• Fault 4: Front / Rear Crankshaft Oil Seal Leakage
  Root Cause: Seal journal wear grooves leads to oil leaking even with brand‑new oil seals.
  Solution: Change to new lapped D8K crankshaft and install new high‑quality oil seal kits.
• Fault 5: Severe Engine Shaking & Imbalance
  Root Cause: Shaft bending deformation or counterweight imbalance after mechanical failure.
  Solution: Replace deformed shaft with 100% dynamically balanced D8K crankshaft assembly.

4. Hot Machinery Replacement Parts Recommendation

Find more factory‑direct aftermarket spare parts for global construction machinery:

5. Frequently Asked Questions & Technical Support

Q1: How can I confirm this D8K crankshaft fits my engine?
A: Please check your engine nameplate for D8K engine mark or original crankshaft OEM casting numbers 135011,135023,135030,135045. You can send engine serial number for quick fitment check.

Q2: What material is this D8K crankshaft made from?
A: Made of high‑strength alloy steel, main and rod journals processed by high‑frequency induction hardening for superior wear‑resistant performance for heavy‑duty machinery.

Q3: Are dynamic balance and crack inspection done before shipment?
A: Yes, every D8K crankshaft completes dynamic balance testing and magnetic particle crack detection before packing to avoid vibration risk for end‑user engine operation.