Kobelco 330 6e excavator hydraulic pump overhaul after the car is going to hold
3. low power: the maximum power of the engine shall not be less than 90% of the original design calibration value, and the dynamometer shall be measured according to the relevant provisions.4. fuel consumption rate: the minimum fuel consumption rate of the engine shall not be higher than the original design requirements.
5. low torque: the maximum torque of the engine shall not be less than 90% of the original design calibration value. The dynamometer shall be checked in accordance with the relevant provisions, and the work capacity shall be seriously damaged.
The engine has to be overhauled with strict standards. The following are the important "indicators" for the engine to be overhauled. The signs are that the surface engines will be overhauled.1. cylinder pressure difference: cylinder compression pressure should be consistent with the original design requirements for tachometer, cylinder pressure gauge inspection does not meet the requirements for the unqualified cylinder pressure difference per cylinder pressure and cylinder average pressure difference less than 8% with tachometer, cylinder pressure gauge or engine analyzer to measure (does not meet the standards of the Elantra engine the cylinder pressure difference required for unqualified). When the engine cylinder pressure is lower than its Wyatt standard value will have a serious black smoke.2. idle fluctuation: engine idle running stability, the speed meets the original design requirements. The speed fluctuation is not more than 50r/min. The tachometer is used for running test or by engine comprehensive analyzer.
