Construction Machinery Engine Parts 3089715 Cummins Rocker Lever Shaft

Asymmetric oil channel design

The unique oblique spiral oil channel structure ensures that the lubricant continuously covers the contact surface during high-speed movement, solving the lubrication dead space problem that is likely to occur in the traditional straight oil groove and reducing the risk of abnormal wear of the camshaft.

Tolerance control ±0.002mm

Through the secondary finishing by the CNC grinding machine, the roundness error of the shaft diameter is less than 50% of the industry standard, preventing the rocker arm from stagnating or causing power loss due to the fit gap deviation.

Cummins original 2 million times of dynamic load test (simulation of the actual operation of the start-stop, impact scenarios), no deformation or cracks.

Applicable models: Cummins QSB6.7 and QSL9 construction machinery engines.

Typical fault replacement: When the original rocker arm shaft exhibits symptoms of sticking and makes abnormal noises, direct replacement can restore the valve opening and closing precision and prevent collateral damage to the rocker arm assembly.

Reduce cost and increase efficiency: single replacement can extend the overhaul cycle to 12,000 hours (3,000 hours longer than the sub-factory parts).

Compatibility guarantee: The depth of the blind hole at the end of the shaft is the same as that of the original part, avoiding the deviation of the top rod stroke caused by modification.