7E-4863 fuel injection pump camshaft CAT engine spare part

7E-4863 fuel injection pump camshaft CAT engine spare part Featured Image
  • 7E-4863 fuel injection pump camshaft CAT engine spare part
  • 7E-4863 fuel injection pump camshaft CAT engine spare part

Short Description:

Part No.7E-3231, CAT engine camshaft, fits 35 series dual bank diesel engine, integrated valve train drive shaft, controls intake and exhaust valve timing, overhaul spare part for mining trucks and generator sets.


Product Detail

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description

This 7E-4863 is dedicated camshaft for fuel injection pump, different from valve train camshaft. It pushes pump tappets and plungers to control injection start time and injection duration. Forged alloy steel with high-frequency hardened and precision ground cam lobes, stable under cyclic high pressure impact. It is widely used for old CAT pump on mining machinery and generator sets, normally replaced together with tappets, plungers and seals during overhaul.

Part No.：7E-4863
Name：CAT fuel injection pump camshaft
Mounting position：Inside fuel injection pump
Structure：Single driving camshaft for injection pump
Material：Alloy steel forging
Surface treatment：High-frequency hardening, precision grinding

Advantages

1. Pump-specific cam profile, stable injection timing and even fuel supply
2. Sufficient hardened depth, resistant to pitting and spalling under cyclic impact
3. Good journal coaxiality, low running resistance and less plunger sticking
4. Single shaft replacement, no engine block disassembly required, lower repair cost

FAQ 

Q1：Can 7E-4863 be replaced by engine valve camshaft?
A：No. Lift, base circle and timing differ, it is only for injection pump.

Q2：Can I change only camshaft without tappets?
A：Not recommended. Old tappets will wear new cam quickly.

Q3：What symptoms will worn pump camshaft cause?
A：Timing disorder, insufficient fuel supply, unstable idle, black smoke and low power.

Q4：Is pump calibration required after replacement?
A：Yes, injection advance angle and fuel quantity must be recalibrated.

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