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原動機(jī)將
不接受全部
負(fù)載
調(diào)速器是否已滿
燃料
是的-
1、懸掛機(jī)構(gòu)是否調(diào)整正確？
2、負(fù)載是否過大？
電壓調(diào)節(jié)器（如使用）是否設(shè)置正確？
4、原動機(jī)上的燃油擋塊設(shè)置是否正確？
否-
1、負(fù)載極限是否超出范圍，是否調(diào)整正確？
2、燃油限制（如有配備）是否設(shè)置得過低？
3、燃油限制器是否有足夠的氣壓？
4、懸掛機(jī)構(gòu)是否粘滯或調(diào)整不當(dāng)？
如果電動起動燃油限制器有足夠的電壓
電磁閥？
針閥
調(diào)整確實(shí)
未消除
不穩(wěn)定。
（1） 是振蕩
周期性且平滑
（非間歇）？
是的-
轉(zhuǎn)至問題（2）。
否-
檢查以下各項(xiàng)：
1、燃料來源是否充足且穩(wěn)定？
2、速度設(shè)定參考是否穩(wěn)定？
3、調(diào)速器油位是否低？
4、負(fù)載是否不穩(wěn)定？
調(diào)速器油是否干凈？
（2） 是的頻率
高于5的振蕩
赫茲？
是的-
檢查以下各項(xiàng)：
調(diào)速器傳動系。
調(diào)速器對準(zhǔn)。
彈簧驅(qū)動油阻尼球頭臟污（如有配備）。
4、噴油器損壞或缺火？
否-
轉(zhuǎn)至問題（3）。
（3） 是振蕩
與速度設(shè)置相關(guān)
變化？
是的-
必須找到速度設(shè)置變化的原因，并
已更正。
否-
轉(zhuǎn)至問題（4）。
（4） 振蕩
消失時
阻塞調(diào)速器
輸出或運(yùn)行
手動油門？
是的-
1、連桿是否松動或磨損？
調(diào)速器零件號是否適用于此應(yīng)用？
3、更換調(diào)速器。
否-
1、檢查負(fù)載波動。
2、檢查燃油供應(yīng)。
3、檢查連桿是否松動或粘滯。
阻塞調(diào)速器輸出或操作手時
油門，系統(tǒng)不受調(diào)速器控制，以及
必須格外小心，防止超速。做
如果超速速度裝置不工作，請勿嘗試。
調(diào)速器不會
關(guān)閉原動機(jī)
向下
調(diào)速器是否小
燃油位置？
是的-
懸掛機(jī)構(gòu)設(shè)置不當(dāng)，導(dǎo)致停機(jī)。
否-
調(diào)速器上是否有停機(jī)驅(qū)動信號？
2、停機(jī)是否適當(dāng)調(diào)整？
調(diào)速器中的停機(jī)帶是否已正確調(diào)整？
4、關(guān)閉燃油，更換調(diào)速器。

Prime mover will not accept full load. Is the governor at full fuel? YES— 1. Is the linkage adjusted properly? 2. Is load excessive? 3. Is the voltage regulator (if used) set properly? 4. Is the fuel stop on the prime mover set correctly? NO— 1. Is the load limit out of the way, and adjusted properly? 2. Is the fuel limited (if so equipped) set too low? 3. Is there adequate air pressure for the fuel limiter? 4. Is the linkage sticky or improperly adjusted? 5. If electric start fuel limiter—is there adequate voltage for the solenoid? Needle valve adjustment does not eliminate instability. (1) Are the oscillations periodic and smooth (not intermittent)? YES— Go to question (2). NO— Check the following: 1. Is the fuel source adequate and constant? 2. Is the speed setting reference steady? 3. Is the governor oil level low? 4. Is the load erratic? 5. Is the governor oil clean? (2) Is the frequency of the oscillation above 5 Hz? YES— Check the following: 1. Governor drive train. 2. Governor alignment. 3. Dirty spring-driven oil damped ballhead (if so equipped). 4. Bad injector or misfire? NO— Go to question (3). (3) Are the oscillations related to speed setting variations? YES— The cause of the speed setting variation must be found and corrected. NO— Go to question (4). (4) Does the oscillation disappear when blocking governor output or operating hand throttle? YES— 1. Is linkage loose or worn? 2. Is governor part number correct for this application? 3. Replace governor. NO— 1. Check for load fluctuations. 2. Check fuel supply. 3. Check for loose or sticky linkage. When blocking governor output or operating the hand throttle, the system is not under governor control, and extreme caution must be taken to prevent overspeed. Do not attempt if overspeed speed device is not functioning. Governor will not shut prime mover down. Is governor at minimum fuel position? YES— Linkage is improperly set to allow shutdown. NO— 1. Is shutdown actuation signal available at the governor? 2. Are shutdowns properly adjusted? 3. Is shutdown strap in governor properly adjusted? 4. Close off fuel and replace governor.