1W-2470 valve tappet for CAT engine spare part

1W-2470 valve tappet for CAT engine spare part Featured Image
  • 1W-2470 valve tappet for CAT engine spare part
  • 1W-2470 valve tappet for CAT engine spare part
  • 1W-2470 valve tappet for CAT engine spare part

Short Description:

Injector tappet for Caterpillar 3500 series engine, transmits camshaft lift to unit injector plunger and maintains accurate fuel injection timing.

Product Detail

Product Tags

description

This tappet is a drive component for unit injector. It is fitted inside the cylinder block tappet bore. Its bottom surface follows the cam lobe and transfers cam lift vertically to the injector plunger. It is critical for controlling injection start timing and injection duration on mechanical injection engines.

It is made of carbon steel with hardened bottom contact surface for good wear and impact resistance under repeated cam loading. An internal oil passage supplies lubricating oil to the contact zone and builds stable oil film to prevent pitting and scoring.

It is widely used in overhaul of high-power 3508, 3512, 3516 diesel and gas engines for generator sets and mining equipment. Tight dimensional tolerance ensures stable running clearance. Full set replacement is recommended instead of partial single-piece swap.

Part Number: 1W-2470
Name: Valve tappet / injector tappet
Applicable Models: Caterpillar 3508, 3512, 3516, G3512, G3516 engine
Height (in): 9.5
Length (in): 14.6
Material: Carbon steel, contact surface hardened
Function: Transfer cam lift and drive unit injector
Type: Tappet for mechanical injection engine

Product Advantages

1. Hardened contact surface resists cam impact and wear for long continuous heavy-duty operation of 3500 series
2. Internal oil passage supplies steady lubrication and reduces dry friction failure
3. Precise outer diameter ensures smooth fit in block tappet bore and low binding risk
4. OEM stroke specification keeps injection timing stable and prevents power fluctuation and high fuel consumption

FAQ 

Q: What symptoms come with worn tappet bottom surface?
A: Reduced injection lift, delayed injection timing, power loss, rough idle, black smoke and misfire in severe cases.

Q: Can 1W-2470 be used as a valve tappet?
A: No. This is an injector tappet with different stroke and structure, not interchangeable with valve tappet.

Q: What causes tappet binding inside the bore?
A: Blocked oil holes, scratched bore or oil sludge contamination. Forced operation will damage cam lobes and injectors.

Q: Can I replace only several worn tappets?
A: Not recommended. Mixed old and new tappets create uneven lift and unsynchronized injection, leading to rough engine vibration.

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