快修宝

分享：**Troubleshooting a Leiwo 60 Excavator: Hot Engine Stalling** Okay, so a Leiwo 60 excavator is experiencing hot-engine stalling, which worsens when lifting the boom. This points towards either a drop in engine power or an excessive draw on the hydraulic system's power. It's concise and professional, no fluff. My initial thought is to tackle this methodically. First, I would assess the engine's fuel system. Heat is the key here; I need to focus on the high-pressure fuel pump and the injectors. With heat, components tend to expand or wear unevenly, leading to internal leakage and resulting in insufficient fuel delivery, especially under load. I'd clean the fuel lines, ensure the filter is clean, and possibly calibrate the pump or replace the injectors outright. Next on my checklist is the hydraulic pump regulator. If lifting the boom causes the worst of the problem, the pump regulator is suspect. The regulator could be sticking or the servo piston worn, hindering its ability to automatically reduce flow as the machine gets hotter. This leads to the pump absorbing more power than the engine can supply. I would dismantle and thoroughly clean the regulator, check the spring tension and condition, and replace the regulator if necessary. The proportion solenoid valve is next. These could have problems, so I'd need to inspect the wiring and valve core for any sticking problems, as these would affect the control of pump flow. Lastly, I would check the system pressure. With the oil thinner when hot, worn components or failing seals become more apparent. I'd use a gauge to measure the pilot pressure and the main relief pressure. If these are below spec, I would replace the damaged seals and readjust the pressures to the correct specifications.