315-3384 valve tappet for engine spare part

Short Description:

CAT 315-3384 valve tappet for pushrod engine, mechanical lifter transferring cam motion to pushrod. It serves C4.4 engines and is widely stocked for overhaul of 320D2 / 323D2 excavators.


Product Detail

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description

Machined from solid high-carbon alloy steel, the cam contact face is hardened with internal oil feed hole for lubrication. It is a solid mechanical lifter for C4.4 pushrod engines. No hydraulic lash adjustment is built in. The cam lifts the tappet, which pushes the pushrod and rocker arm to open valves. Valve clearance must be manually set during assembly. It fits 320D2,323D2,326D2 excavators, commonly used in earthmoving and urban construction sites with frequent start-stop cycles.

Part No.: 315-3384
Name: Pushrod Type Mechanical Tappet
Application: CAT C4.4 engine; 320D2,323D2,326D2 excavator
Total Height (in): 1.2
Total Length (in): 2.9
Total Width (in): 1.2
Material: High-carbon alloy steel, hardened contact face
Structure: Solid flat mechanical tappet with oil hole, non-hydraulic

Product Advantages

1. Integrated oil feed hole delivers lubricant directly to contact zone and prevents dry friction, optimized for narrow tappet bores of pushrod engines.
2. Tight OD tolerance ensures smooth sliding and reduces sticking, compatible with slightly worn tappet bores.
3. Precision ground flat surface distributes contact pressure evenly and protects cam lobes from scoring.
4. Uniform dimension for bulk overhaul stocking, same part works for both intake and exhaust valves.

FAQ 

Q: Is 315-3384 a hydraulic lifter?
A: No, it is a solid mechanical tappet. Manual valve lash adjustment is required after installation.

Q: How many tappets does one C4.4 engine need?
A: C4.4 is 4-cylinder with 2 valves per cylinder, total 8 tappets per engine.

Q: Can lightly scratched tappet faces be polished and reused?
A: Polishing is not recommended. It distorts flatness, accelerates cam wear and ruins valve lash setting.

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