376-4075 Crankshaft AS CAT spare part

376-4075 Crankshaft AS CAT spare part Featured Image
  • 376-4075 Crankshaft AS CAT spare part
  • 376-4075 Crankshaft AS CAT spare part
  • 376-4075 Crankshaft AS CAT spare part
  • 376-4075 Crankshaft AS CAT spare part

Short Description:

482-4245 CAT crankshaft main bearing with 0.63 mm oversize is bimetallic thin-wall bearing for reground crankshaft journal. It is used for overhaul of CAT C4.4, 3054C, 3054E engines after crank regrinding.


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description

376-4075 CAT engine crankshaft assembly fits CAT C6.6 electronic diesel engines for 320D GC, 323D, M316D wheel excavators and 12M motor graders. Forged alloy steel with timing gear, converts piston reciprocating linear motion into rotary power for medium earthmoving machine overhaul.

Part number: 376-4075
Alternative name: Crankshaft AS
Replacement part: 30R-0581 (Cat Reman)
Fit engine: CAT C6.6, C6.6DE150E
Fit machine: 320D GC, 320D L, 323D, 323D L excavator; M316D, M318D, M322D wheel excavator; 12M, 120M motor grader; 930H, 928H loader, IT38H integrated toolcarrier, AP series paver, PL61 pipelayer
Material: Alloy Steel, Corrosion Preventative Fluid
Structure: Pre-installed counterweights, integrated timing gear
Process: Forging, quenching & tempering, journal precision grinding, oil passage polishing, dynamic balance calibration
Matching system: Electronic common rail diesel engine

Advantages

1. Integrally forged alloy steel blank delivers excellent torsion and fatigue resistance, suitable for intermittent heavy load in earthmoving and paving applications.
2. Main journals and connecting rod journals are precision machined with stable wear-resistant layer, slowing bearing wear and extending overhaul interval.
3. Built-in timing gear with high tooth accuracy keeps valve timing stable and reduces fuel injection disorder failures.
4. Pre-assembled counterweights with factory dynamic balance calibration suppress engine vibration and reduce wear of surrounding components.
5. Built-through lubrication oil passages with reasonable layout guarantee stable oil supply under variable load and long continuous operation.
6. OE standard dimension for direct replacement without extra machining, fully compatible with electronic engine calibration.

FAQ 

Q1: Can 376-4075 interchange with crankshaft for C6.4 engine?
A1: Not interchangeable. C6.4 and C6.6 differ in crank throw, journal size and gear parameters.
Q2: Can the crankshaft be used if timing gear teeth have slight pitting?
A2: Slight pitting requires regular inspection. Replace the whole crankshaft if chipping or large peeling occurs.
Q3: Which spare parts should be renewed together with crankshaft?
A3: Main bearings, connecting rod bearings, thrust washers, front and rear oil seals and main bearing bolts are recommended.
Q4: How to protect the timing gear during crankshaft storage?
A4: Coat gear with anti-rust grease, wrap with soft protective film and support on multi-point fixture to avoid bending and impact.

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