9N-5858 Caterpillar fuel pump camshaft for engine spare part

9N-5858 Caterpillar fuel pump camshaft for engine spare part Featured Image
  • 9N-5858 Caterpillar fuel pump camshaft for engine spare part
  • 9N-5858 Caterpillar fuel pump camshaft for engine spare part

Short Description:

9N-5858 Caterpillar fuel pump camshaft, 88.9 mm outer diameter, internal drive shaft for mechanical fuel injection pump, actuates plungers to control fuel delivery timing, fits classic Cat mechanical pump engines for dozers, wheel loaders and generator sets.


Product Detail

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description

The 9N-5858 is a dedicated camshaft inside mechanical injection pump, different from engine valve camshaft. It pushes pump plungers to regulate fuel injection timing and duration. Heavy vibration and contaminated diesel cause lobe wear and pitting. Failed shaft leads to uneven fuel supply, rough idle, low power and smoke. Severe damage locks plunger and ruins pump. Its 88.9 mm journal OD, cam profile and drive end design are pump-specific, not interchangeable with engine valve camshafts.

Part No.：9N-5858
Name：Fuel Pump Camshaft, 88.9 mm OD
Fit：Cat mechanical injection pump assemblies
Equipment：D-series dozer, 9-series wheel loader, stationary diesel generator
Material：Alloy steel, hardened cam lobes
Matching Components：Pump bearings, oil seal, drive gear, plunger kit

Product Advantages

• Constructed from high-strength materials to withstand mechanical stress.
• Features corrosion-resistant materials for enhanced longevity.
• Withstands elevated temperatures generated during engine operation.
• Incorporates lubrication channels to reduce friction.

FAQ 

1. Can 9N-5858 be replaced by an engine valve camshaft?
No. Profile, lift and load condition differ, it cannot drive fuel plungers.

2. Can lightly pitted lobe be ground and reused?
Not recommended. Grinding changes original injection profile and timing.

3. Is bench calibration required after replacement?
Bench test is strongly recommended to verify injection timing and fuel quantity.

4. Does this camshaft come with drive gear?
No. Only the camshaft itself. Gear is sold separately.

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