108-6277 Caterpillar engine camshaft for engine spare part

108-6277 Caterpillar engine camshaft for engine spare part Featured Image
  • 108-6277 Caterpillar engine camshaft for engine spare part

Short Description:

108-6277 Caterpillar engine camshaft, built for heavy-duty V-type 3508 diesel engine, controls valve timing for one cylinder bank, widely used on D10 dozer, 775D mining truck and stationary power units.


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description

The 108-6277 is forged single-bank camshaft for 3508 engine, paired with 108-6278. It drives roller lifters to regulate intake and exhaust valve events. This classic V8 power serves open-pit mines and oilfield equipment under sustained high cylinder pressure and heavy shock loads. Lobe pitting, spalling or journal scuffing leads to uneven cylinder performance, smoke emission and power loss. Severe failure triggers valve-piston contact. This camshaft is supplied without drive gear, allowing reuse of serviceable original gear for cost-effective overhaul.

Part No.：108-6277
Name：Engine Camshaft (without gear)
Fit Models：CAT 3508
Matching Part：108-6278
Equipment：D10 dozer, 775D mining truck, industrial generator set
Material：Forged alloy steel with induction hardened cam lobes
Matching Components：Roller lifters, cam bearings, timing gear, thrust washer

Product Advantages

1. OEM calibrated cam profile for single bank of 3508, optimizing air exchange and consistent cylinder combustion
2. One-piece forged blank with dense grain structure, resistant to cyclic impact for non-stop full-load mining cycles
3. Uniform hardened layer on lobes and journals delivers good seizure and abrasion resistance against contaminated lubricating oil
4. Supplied without gear. Serviceable original gear can be retained separately to cut overhaul investment

FAQ 

1. Can 108-6277 swap cylinder bank with paired 108-6278?
No. They have separate lift and phase profiles for left and right banks, mixing them causes timing failure.

2. Does it fit 3512 engine?
No. 3508 and 3512 differ in block layout, cam stroke and mounting dimension, non-interchangeable.

3. Can original gear with light tooth pitting be reused?
Fatigue pitting propagates fast under heavy mining load. Thorough inspection is required and replacement is often recommended.

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

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