129-5670 Caterpillar 6-lobe fuel injection pump camshaft for engine spare part

129-5670 Caterpillar 6-lobe fuel injection pump camshaft for engine spare part Featured Image
  • 129-5670 Caterpillar 6-lobe fuel injection pump camshaft for engine spare part
  • 129-5670 Caterpillar 6-lobe fuel injection pump camshaft for engine spare part
  • 129-5670 Caterpillar 6-lobe fuel injection pump camshaft for engine spare part

Short Description:

129-5670 Caterpillar 6-lobe fuel injection pump camshaft, fitted inside inline injection pump, six lobes for 6-cylinder pump, drives plungers for timed fuel delivery, for overhaul of Cat mechanical fuel pump.


Product Detail

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description

This camshaft is a core drive component inside inline mechanical injection pump. It has six cam lobes that define injection timing and fuel delivery rate. Driven by pump gear, it pushes plungers sequentially to deliver high-pressure fuel for each cylinder. It fits Cat 6-cylinder mechanical fuel pumps for older construction machinery, generator sets and trucks. Replace it when lobes are scored, pitted or worn out to maintain balanced injection timing and prevent misfire, smoke and power loss.

Part Number: 129-5670
Type: Fuel Injection Pump Camshaft (Internal)
Number of Cams: 6
Material: Forged Alloy Steel
Manufacturing Process: Forging, induction hardening of cam surfaces, precision grinding of journals
Associated Components: Pump plungers, tappets, oil seals, pump gears, bushings
Function: Drives the plungers and controls fuel injection timing and fuel delivery stroke

Product Advantages

• Ensures optimal timing with an 18.5-degree angular accuracy.
• Heat-resistant for prolonged operational life.
• High-strength material for durability.

1. OEM 6-lobe profile, accurate lift and timing for balanced cylinder fuel delivery.
2. Forged steel with hardened cam surface, good wear resistance under cyclic high pressure.
3. Precise journal concentricity reduces bushing wear and pump seizure.
4. Serviceable inside injection pump, no need for full engine teardown.
5. Matches original pump housing, journal and keyway dimensions for direct fit.

FAQ 

Q: Is this the engine valve camshaft?
A: No, it is internal to the injection pump, driving fuel plungers only.

Q: Does 6-lobe mean 6-cylinder?
A: Yes, six lobes for six plungers on 6-cylinder pump.

Q: Can I replace only this shaft instead of whole pump?
A: Yes, if pump housing is intact and only cam lobes are worn.

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