450-6634 camshaft assembly CAT engine spare part

450-6634 camshaft assembly CAT engine spare part Featured Image
  • 450-6634 camshaft assembly CAT engine spare part
  • 450-6634 camshaft assembly CAT engine spare part

Short Description:

Part No.450-6634, caterpillar camshaft assembly for road paving equipment, built for paver and milling machine diesel power, tuned for steady low-speed torque and smooth load transition, different from compressor 450-6633.


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description

This 450-6634 camshaft assembly is forged from fine-grain alloy steel. Its cam profile is optimized for constant-speed paving, stabilizing low-speed torque to avoid uneven mat thickness. Timing gear, locating spacer and thrust bushing are pre-assembled and phase-checked. It coordinates valve events and fuel injection to fix power fluctuation, low-speed shake, gear noise and smoke during speed change. Road equipment runs at steady low speed with minor load variation, its timing and heat treatment differ from compressor, mining and marine camshafts.

Part No.：450-6634
Name：Camshaft Assembly for Road Paving Machinery
Material：Fine-grain alloy forged steel
Process：Integral forging, carburizing quenching, segmented precision grinding, dynamic balance, pre-calibration
Package includes：Camshaft body, timing gear, locating spacer, thrust bushing
Application：Cat paver, milling machine diesel power unit, road construction equipment

Advantages

1. Paving-specific cam angle, extended low-speed intake duration for smooth torque during speed adjustment
2. Optimized thrust bushing, absorbing minor axial impact from travel direction change and stabilizing timing
3. Balanced tough hardened cam surface, resisting fatigue pitting under continuous light alternating load
4. Pre-assembled unit, saving fitting time in cramped engine compartment of paver
5. Concentricity, gear backlash and cam profile inspected individually, suitable for rental fleet spare stock

FAQ 

Q：Can 450-6634 paver camshaft assembly replace compressor 450-6633?
A：Not interchangeable. Cam profile, fuel timing and thrust design differ, causing rough idle and unstable power.

Q：Can the camshaft be reused after light journal scratches polished?
A：It can be used temporarily within tolerance. Deep grooves require replacement to avoid seizure during paving.

Q：How to store this camshaft assembly properly?
A：Hang vertically, apply anti-rust grease on gear teeth and cams, wrap dust film and keep away from construction dust and moisture.

Q：Is oil and filter change recommended after installation?
A：Recommended, to protect new cam lobes from debris for long continuous paving operation.

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