347-1134 Caterpillar main engine camshaft for engine spare part

347-1134 Caterpillar main engine camshaft for engine spare part Featured Image
  • 347-1134 Caterpillar main engine camshaft for engine spare part

Short Description:

347-1134 Caterpillar main engine camshaft, fits C6.6 electronic engine, controls intake and exhaust valve timing, widely used on 320D, 323D excavators and wheeled construction machinery.


Product Detail

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description

The 347-1134 is one-piece camshaft for inline four-cylinder C6.6 engine. It drives roller lifters to regulate valve opening and closing events. This electronic engine is fitted on earthmoving excavators with frequent start-stop and variable load cycles. Lobe pitting, spalling or journal scoring leads to insufficient power, rough idle and high fuel consumption. Severe damage causes valve-to-piston contact and valve train failure. This camshaft is supplied without timing gear, and serviceable original gear can be reused for cost-effective overhaul.

Part No.：347-1134
Name：Main Engine Camshaft (without gear)
Fit Models：CAT C6.6
Equipment：320D, 323D excavator, wheel loader
Weight (lb): 14.37
Material：Forged alloy steel with induction hardened cam lobes
Matching Components：Roller lifters, cam bearings, timing gear, thrust washer

Product Advantages

Attributes:
• Supports high-speed operation without valve float.
• Balanced to minimize torsional vibration during rotation.
• Controls valve overlap to influence exhaust scavenging.

Applications:
The Primary Engine Camshaft is installed in the engine block and controls valve timing to regulate airflow in combustion chambers for engine power generation.

FAQ 

1. Can 347-1134 interchange with 360-3197?
Interchange is not recommended. They have different lift and timing specs for different C6.6 revisions.

2. Does it fit C6.4 engine?
No. C6.4 and C6.6 differ in cam lift, journal size and mounting spacing, non-interchangeable.

3. Can the camshaft stay in service with minor scattered pitting and no cracks?
Pitting spreads fast under cyclic construction load, replacement is recommended.

4. What risk if I install new camshaft and reuse old lifters?
Mismatched contact surfaces accelerate lobe fatigue and spalling during break-in and lead to early failure.

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