347-1133 Caterpillar engine camshaft for engine spare part

347-1133 Caterpillar engine camshaft for engine spare part Featured Image
  • 347-1133 Caterpillar engine camshaft for engine spare part

Short Description:

347-1133 Caterpillar engine camshaft, designed for inline six-cylinder C6.6 engine, controls intake and exhaust valve timing, used on 320D, 323D excavators, motor graders and asphalt pavers.


Product Detail

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description

The 347-1133 is a one-piece camshaft for C6.6, equipped with integrated trigger wheel for cam sensor, synchronizing valve events and electronic fuel injection signal. C6.6 is widely adopted on mid-size earthmoving machines working in dusty sites with frequent start-stop and variable load. Cam geometry affects air-fuel ratio, throttle response and idle stability. Pitting on lobes or journal scoring causes timing faults, power loss and higher fuel consumption, and may lead to valve-piston collision in severe cases.

Part No.：347-1133
Name：Engine Camshaft
Fit Models：CAT C6.6
Equipment：320D, 323D excavator, 12M grader, AP1000E paver, 938H loader
Material：Forged alloy steel with induction hardened cam lobes
Matching Components：Roller lifters, cam bearings, timing gear, cam position sensor

Product Advantages

1. OEM calibrated cam profile matches C6.6 ECU, synchronizing valve and injection timing for smooth power delivery
2. Precision ground journals with uniform hardened layer, anti-pitting and impact resistant for cyclic earthmoving loads
3. Integrated trigger wheel with stable positioning, delivering reliable sensor signal and reducing intermittent timing faults
4. Drop-in replacement dimension, compatible with original bearings, gear and sensor bracket without modification

FAQ 

1. Does 347-1133 fit C7.1 engine?
No. C6.6 and C7.1 differ in cam lift, trigger wheel and journal dimensions, non-interchangeable.

2. Can the camshaft stay in service with shallow isolated pitting and no crack?
Light scattered pits can be monitored temporarily. Replace it if pitting spreads or spalling occurs, to protect lifters.

3. What risk if I install new camshaft and reuse old lifters?
Mismatched contact surfaces will cause rapid pitting and spalling during break-in and lead to premature failure.

4. Does it fit both excavator and paver C6.6?
It fits base C6.6 platform. Verify engine serial number and electronic control version before ordering.

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