Product Descreiption
1. Product Parameters (Specifications)
- Part Number: 3944298
- Engine Application: Cummins ISC/ISCE Series diesel engines
- Component Name: Camshaft Timing Gear
- Material: High-strength forged steel
- Teeth Count: 84 teeth
- Helix: Right-hand helical gear design
- Weight: Approximately 3.8 kg (8.35 lbs)
- Function: Timing / Camshaft Drive
2. Mounting Location (Installation Position)
This gear is mounted on the front end of the engine camshaft, inside the timing gear housing (front cover).
- It meshes directly with the crankshaft timing gear.
- It is positioned at the front of the cylinder block, behind the front engine cover.
- It is fixed to the camshaft via a dowel pin/keyway and retaining bolt for precise angular alignment.
3. Primary Functions
- Power Transmission: Transfers rotational force from the crankshaft gear to drive the camshaft.
- Timing Synchronization: Maintains a strict 2:1 speed ratio (camshaft rotates at half crankshaft speed).
- Valve Control: Ensures intake and exhaust valves open and close at precise crankshaft angles relative to piston position.
- Engine Performance: Directly governs combustion cycle timing, affecting power, fuel efficiency, and emissions.
