336-7516 camshaft for CAT engine spare part

336-7516 camshaft for CAT engine spare part Featured Image
  • 336-7516 camshaft for CAT engine spare part
  • 336-7516 camshaft for CAT engine spare part

Short Description:

Camshaft for Caterpillar C6.6 / C7.1 engine, drives hydraulic tappet valve train, precisely controls intake and exhaust valve timing, overhaul replacement for 320E, 323E, 330F excavators and 950K loaders.

Product Detail

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description

This camshaft is a core valve-train component for C6.6 and C7.1 electronic diesel engines. Cam lobes actuate hydraulic tappets and rocker assemblies to control valve lift and timing, matching ECU fuel map and aftertreatment system. It is widely used on medium excavators, wheel loaders and motor graders.

It adopts forged steel base with induction hardened cam surfaces for uniform hardness and excellent pitting and spalling resistance under cyclic impact loads. Journals, cam profiles and oil passages are machined to OEM drawing for stable lubrication, calibrated for Tier4 emission engines.

This camshaft is supplied without timing gear, the matching gear needs to be ordered separately. It should be matched with correct camshaft bushings, hydraulic tappets and pushrods during overhaul to maintain concentricity. Verify engine serial number before ordering.

Part Number: 336-7516
Name: Engine camshaft
Applicable Models: Caterpillar C6.6, C7.1 engine; 320E, 323E, 329E, 330F excavator, 950K loader, 120M motor grader
Length (in): 30.4
Material: Cast iron
Outer diameter (in): 2.17
Outer diameter: 55 mm (2.17 in)
Length: 772 mm (30.40 in)
Type: New part, timing gear not included
Function: Drive valve train and control valve timing

Product Advantages

1. Forged steel base with hardened cam lobes, wear and impact resistant for long earthmoving operation of C6.6 / C7.1
2. Cam lift and timing calibrated for Tier4 ECU, stable power and less emission fault codes
3. Precise journal tolerance and optimized oil passage supply sufficient lubrication and reduce scoring risk
4. OEM cam profile for reliable interchangeability, easy calibration and shorter machine downtime

FAQ 

Q: What faults are caused by pitting and spalling on cam lobes?
A: Insufficient valve lift, poor air flow, power loss, higher fuel consumption and valve train noise, engine derate and high emission in severe cases.

Q: Can 336-7516 be used directly on both C6.6 and C7.1?
A: Some versions have different timing profiles. Verify engine serial number before cross-installation, do not interchange only by engine model name.

Q: C7.1 uses hydraulic tappets. Do I need repeated valve lash adjustment after camshaft replacement?
A: Hydraulic tappets compensate clearance automatically. Follow timing assembly and check valve noise after break-in.

Q: What risk if only replacing camshaft without changing bushings?
A: Worn out-of-round old bushings create abnormal clearance with new journals, which may score the camshaft quickly and cause premature failure.

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