轉(zhuǎn)向器故障排除培訓(xùn)

故障分析及排除全液壓轉(zhuǎn)向系統(tǒng)主要零件組成轉(zhuǎn)向器主要零件組成定轉(zhuǎn)子付聯(lián)軸器隔板閥芯閥套撥銷殼體Engine

PFCPumpReservoirFilterLTRPEFCFpLS8泵嚴(yán)重磨損或損壞,容積效率低.產(chǎn)生的壓力和流量不能滿足系統(tǒng)要求.9.負(fù)荷傳感系統(tǒng),優(yōu)先閥溢流閥壓力低,或主閥芯卡滯,或阻尼孔被阻塞等.分流閥中的安全閥組件壓力低.組合閥塊中安全閥壓力低.10.轉(zhuǎn)向柱與轉(zhuǎn)向器連接部位有干涉現(xiàn)象,裝配后給轉(zhuǎn)向器閥芯產(chǎn)生軸向或徑向力.1.優(yōu)先閥案LS管扭結(jié)或太長(zhǎng).阻尼孔被堵塞或漏油.問(wèn)題1-

轉(zhuǎn)向沉,

方向盤轉(zhuǎn)速低,或沒(méi)有動(dòng)力轉(zhuǎn)向11.優(yōu)先閥或分流閥主閥芯被物物卡滯或主彈簧彈性變小.2.機(jī)械連桿有干涉現(xiàn)象.3.整個(gè)轉(zhuǎn)向系統(tǒng)管路中有被堵塞的地方,形成嚴(yán)重節(jié)流,造成轉(zhuǎn)向沉.4.回油濾油器被堵塞.5.轉(zhuǎn)向柱本身?yè)p壞,轉(zhuǎn)動(dòng)力矩較大.6.轉(zhuǎn)向器入口單向閥損壞堵塞轉(zhuǎn)向器入口.7.轉(zhuǎn)向器熄火轉(zhuǎn)向單向閥鋼球被卡滯不能復(fù)位.問(wèn)題2–蛇行車輛不走直線.車輛不走直線.問(wèn)題2–蛇行問(wèn)題2–蛇行車輛不走直線.車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線.問(wèn)題2–蛇行車輛不走直線原因:1.油液氣蝕,

檢查吸油濾芯是否堵塞.檢查泵吸油管及接頭處是否漏氣,吸油管是否局部收縮或折彎產(chǎn)生通油不暢通.問(wèn)題2–蛇行氣穴現(xiàn)象氣穴現(xiàn)象氣穴損傷

2.泵吸油管及連接處進(jìn)氣,.ReservoirEngine

PFCPumpFilterLTRPp4.油缸銷子松動(dòng)或桿彎曲.3.油箱液面低1.檢查氣穴現(xiàn)象.

問(wèn)題2:蛇行5.油缸內(nèi)泄漏.6.雙向過(guò)載閥或雙向補(bǔ)油閥泄漏.車輛不能在方向盤不動(dòng)時(shí)沿直線行駛.問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏問(wèn)題3:車輛跑偏1.閉芯轉(zhuǎn)向器中位時(shí)向油缸口的泄漏..注:閉芯轉(zhuǎn)向器系統(tǒng)有輕微跑偏是正常.

EngineFixedPumpReservoirFilterLTRPp2.檢查油缸連接桿是否松動(dòng).檢查此部位問(wèn)題3:車輛跑偏3.油缸內(nèi)泄漏.4.兩輪胎氣壓差異較大.5.雙向過(guò)載閥或雙向補(bǔ)油閥有一側(cè)泄漏.6.油液中有空氣.EngineFixedPumpReservoirFilterLTRPp1.檢查油缸連接桿是否松動(dòng).檢查此部位2.油缸內(nèi)泄漏.3.雙向過(guò)載閥或雙向補(bǔ)油閥有一側(cè)泄漏.4油液中有空氣.問(wèn)題4:方向盤滑移方向盤慢轉(zhuǎn)不能使轉(zhuǎn)向輪同步動(dòng)作.方向盤慢轉(zhuǎn)不能使轉(zhuǎn)向輪同步動(dòng)作.活塞密封件損壞QinQout油缸內(nèi)泄漏問(wèn)題4:方向盤滑移啟動(dòng)時(shí)短暫的轉(zhuǎn)向不靈活:EngineFixedPumpReservoirFilterLTRPp

10F-40F1.較長(zhǎng)時(shí)間不工作,轉(zhuǎn)向器元件與系統(tǒng)油液溫差較大.問(wèn)題5:熱沖擊1.系統(tǒng)中有空氣EngineFixedPumpReservoirFilterLTRPp2.油缸銷子松動(dòng)3.熱沖擊.4.優(yōu)先閥或分流閥主閥芯有卡滯現(xiàn)象.問(wèn)題6:轉(zhuǎn)向不準(zhǔn)確5.油缸有泄漏.6

泵效率低,造成壓力不穩(wěn).EngineFixedPumpReservoirFilterLTRPp系統(tǒng)中有空氣問(wèn)題7:轉(zhuǎn)向油缸蠕動(dòng)現(xiàn)象EngineFixedPumpReservoirFilterLTRPp1.轉(zhuǎn)向柱與方向盤螺母脫落2.轉(zhuǎn)向柱芯軸與轉(zhuǎn)向器閥芯聯(lián)結(jié)脫落3.油箱油面過(guò)低方向盤可自由轉(zhuǎn)動(dòng),沒(méi)有壓力感覺(jué)或轉(zhuǎn)向輪不動(dòng)問(wèn)題8方向盤空行程方向盤輕松轉(zhuǎn)動(dòng),轉(zhuǎn)向輪不動(dòng)或動(dòng)作緩慢EngineFixedPumpReservoirFilterLTRPp1.雙向過(guò)載閥或雙向補(bǔ)油閥泄漏嚴(yán)重.2.油缸活塞泄漏嚴(yán)重3.轉(zhuǎn)向柱與轉(zhuǎn)向器連接脫落.4.油缸與轉(zhuǎn)向連桿處磨損間隙大或損壞EngineFixedPumpReservoirFilterLTRPp2.較大的回油備壓可造成回位不好轉(zhuǎn)向柱與轉(zhuǎn)向器連接緊或干涉.*方向盤停止轉(zhuǎn)動(dòng)手離開方向盤后,方向盤仍繼續(xù)轉(zhuǎn),或加油門時(shí)繼續(xù)轉(zhuǎn),這種現(xiàn)象多由此原因造成.3.大的污染顆粒進(jìn)入閥芯閥套之間,造成不能回位問(wèn)題10-

回位不好或跟轉(zhuǎn)4.轉(zhuǎn)向器彈簧片損壞或彈性較小.3.撥銷斷裂2.嚴(yán)重研傷

1.大而且硬的污染顆粒進(jìn)入定轉(zhuǎn)子幅中間4.熱沖擊(50度溫度差異時(shí))問(wèn)題11-轉(zhuǎn)向器元件損壞LTRP裝配關(guān)系錯(cuò)誤,拆修重裝時(shí),聯(lián)動(dòng)軸撥銷槽對(duì)應(yīng)的花鍵齒與轉(zhuǎn)子齒凹的內(nèi)花鍵齒凹對(duì)應(yīng).將進(jìn)油接到R或L口上,則轉(zhuǎn)向器向馬達(dá)一樣自轉(zhuǎn).問(wèn)題12-方向盤震蕩或自轉(zhuǎn)LTRPR,L口接反左轉(zhuǎn)問(wèn)題13-轉(zhuǎn)向輪與方向盤方向相反LTRP如何才能防止反彈?問(wèn)題14-方向盤反彈入口單向閥損壞–入口單向閥的作用是防止油缸在外力作用下壓力高于入口壓力油液倒流,而產(chǎn)生方向盤反彈現(xiàn)象.問(wèn)題14-方向盤反彈Engine

PFCPumpReservoirFilterLTRPEFCFpLS轉(zhuǎn)向時(shí),系統(tǒng)及管路振動(dòng),車輛共振,有較大噪音.1.管路中有空氣問(wèn)題15-轉(zhuǎn)向不穩(wěn)定負(fù)荷傳感系統(tǒng)Engine

PFCPumpReservoirFilterLTRPEFCFpLS1.系統(tǒng)有空氣.2.溢流閥–主系統(tǒng)溢流閥要比優(yōu)先閥