1. First gear and reverse gear are normal, and second gear has no driving force

檢查變速手柄（skid steer loader）是否到位，如不到位應(yīng)重新調(diào)整。然后檢查變速壓力表在二擋位置是否降壓， 如果降壓，檢查變速箱的8字形端蓋的外圍是否有壓力油流出，如有滲漏現(xiàn)象，可以緊固周圍的 螺栓。上述方法仍不能排除故障，則把8字形端蓋卸下，更換 o型密封圈和紙墊。此時(shí)如果沒有壓力油溢出，則證明變速箱內(nèi)的二擋構(gòu)件有問題， 把二擋構(gòu)件拆下。檢查二擋外部的油封是否損壞，然后再分解二擋構(gòu)件，取出活塞，檢查活 塞環(huán)、油封環(huán)和摩擦片是否損傷。檢查二擋油缸內(nèi)的導(dǎo)向銷是否脫落，若導(dǎo)向銷脫落，二擋的壓 力油由此處大量流出，造成二擋壓力降低而不能行駛。針對(duì)降壓的原因，更換密封件或修、換零部件。

First, check whether the shift lever loader is in place. If not, readjust it. Then check whether the pressure of the transmission pressure gauge is reduced at the second gear position. If so, check whether there is pressure oil flowing out of the periphery of the 8-shaped end cover of the transmission. If there is leakage, fasten the surrounding bolts. If the above methods still cannot eliminate the fault, remove the 8-shaped end cover and replace the o-shaped seal ring and paper gasket. At this time, if there is no pressure oil overflow, it indicates that the second gear component in the gearbox is faulty. Remove the second gear component. First, check whether the oil seal outside the second gear is damaged, then disassemble the second gear components, take out the piston, and check whether the piston ring, oil seal ring and friction plate are damaged. Finally, check whether the guide pin in the second gear oil cylinder falls off. If the guide pin falls off, a large amount of pressure oil in the second gear will flow out from here, causing the pressure in the second gear to decrease and the vehicle cannot be driven. For the reason of pressure reduction, replace the seals or repair or replace the parts.

2、變速壓力、動(dòng)臂、轉(zhuǎn)斗和轉(zhuǎn)向都正常，但裝載機(jī)仍不能前進(jìn)與后退

2. The speed change pressure, boom, bucket and steering are normal, but the loader still cannot move forward or backward

檢查變速箱內(nèi)是否缺油和進(jìn)油管路是否堵塞，然后檢查變速箱油底殼(electrical motor)和變矩器濾清器。如果發(fā)現(xiàn)金屬碎塊等物，則可以肯定變速箱內(nèi)的大超 越離合器內(nèi)零件有損壞。如果發(fā)現(xiàn)變速箱油底殼和變矩器濾清器內(nèi)有鋁屑出現(xiàn)，則可以肯定變矩器里 面零件損壞。這時(shí)拆卸檢查變速箱和變矩器，進(jìn)行修理和更換所損壞的零件。排除上述原因，車 仍不能行走，就可以確定是變速箱內(nèi)的二擋構(gòu)件周圍的螺栓被切斷，或中間軸輸出齒輪脫落，而使動(dòng) 力無法輸出。排除方法 ：可將變速箱的8字形端蓋拆開，取出二擋構(gòu)件，更換切斷的螺栓即可。此螺 栓材料是40Cr，進(jìn)行調(diào)質(zhì)處理，決不可用普通螺栓代替。

First, check whether the transmission is short of oil and whether the oil inlet pipe is blocked, and then check the transmission oil pan (electrical motor) and torque converter filter. If metal fragments and other objects are found, it can be confirmed that the parts in the large overrunning clutch in the gearbox are damaged. If aluminum chips are found in the transmission oil pan and torque converter filter, it is certain that the parts inside the torque converter are damaged. At this time, disassemble and check the transmission and torque converter, repair and replace the damaged parts. After the above reasons are eliminated, if the car still cannot move, it can be determined that the bolts around the second gear component in the gearbox are cut off, or the output gear of the intermediate shaft falls off, which makes the power output impossible. Troubleshooting: The 8-shaped end cover of the gearbox can be disassembled, the second gear component can be taken out, and the cut bolt can be replaced. The bolt material is 40Cr, which shall be quenched and tempered and shall not be replaced by ordinary bolts.

3、一擋、倒擋無力，二擋行駛緩慢

3. Weak in first gear and reverse gear, slow in second gear

檢查變速壓力表所指示的壓力是否正常。如果壓力達(dá)到108KPa，加大油門查看壓力表指針 是否擺動(dòng)；如果劇烈擺動(dòng)，就證明變速箱里的透平油太臟或油量不足，應(yīng)查看變速箱油位檢油塞是否 能流出透平油。如果有油流出， 則故障是因油太臟所致，應(yīng)清洗變速箱和濾清器，然后更換新油；如 果油量正常，變速壓力表指示正常，則故障可能是變速箱（conveyor belt）和變矩器中間的輸入二級(jí)齒輪斷裂，使變矩 器二級(jí)齒輪的動(dòng)力不能輸出，只有一級(jí)齒輪的動(dòng)力可以輸出。排除的方法：拆除變矩器和變速箱的連接，更換損壞的輸入二級(jí)齒輪。

First, check whether the pressure indicated by the variable speed pressure gauge is normal. If the pressure reaches 108KPa, increase the accelerator to check whether the pointer of the pressure gauge swings; If it swings violently, it indicates that the turbine oil in the gearbox is too dirty or insufficient. Check whether the oil level inspection plug of the gearbox can flow out of the turbine oil. If oil flows out, the fault is caused by dirty oil. Clean the transmission and filter, and then replace with new oil; If the oil volume is normal and the indication of the transmission pressure gauge is normal, the fault may be that the input secondary gear between the transmission belt and the torque converter is broken, making the power of the torque converter secondary gear unable to output, and only the power of the primary gear can be output. Troubleshooting: Remove the connection between the torque converter and the transmission, and replace the damaged input secondary gear.

4、一擋驅(qū)動(dòng)無力，其它擋位正常

4. First gear drive is weak, other gears are normal

檢查變速表的壓力，是否在一擋位置有降壓的現(xiàn)象。如果壓力在98.1KPa以下，一擋驅(qū)動(dòng)必 然無力。造成這些現(xiàn)象的原因是一擋活塞環(huán)擦傷或磨損過大，使壓力油泄露過多，從而使一擋驅(qū)動(dòng)無 力；另外，還可能是因一擋油缸外部的o型密封圈損壞，造成大量的壓力油滲漏；如果故障是上述原 因造成的，把變速箱吊出，拆開更換損傷的活塞環(huán)和密封圈；如果變速壓力表在一擋位置沒有降 壓的情況，很可能是變速拉桿沒有調(diào)整到位，使一擋驅(qū)動(dòng)無力，應(yīng)重新調(diào)整變速拉桿，使它達(dá)到規(guī)定 位置。

First, check the pressure of the transmission gauge to see if there is pressure drop at the first gear. If the pressure is below 98.1KPa, the first gear drive must be weak. The reason for these phenomena is that the first gear piston ring is scratched or worn too much, which makes the pressure oil leak too much, thus making the first gear drive weak; In addition, a large amount of pressure oil leakage may be caused by the damage of the O-ring outside the first gear oil cylinder; If the fault is caused by the above reasons, lift out the gearbox, disassemble and replace the damaged piston ring and seal ring; If the pressure of the shift pressure gauge is not reduced at the first gear position, it is likely that the shift lever is not adjusted in place, making the first gear drive weak. The shift lever should be readjusted to make it reach the specified position.

5、發(fā)動(dòng)機(jī)工作正常，裝載機(jī)不能行走

5. The engine works normally, and the loader cannot walk

檢查變速箱的油量限位閥和變速壓力表。如發(fā)現(xiàn)缺少變速變矩油應(yīng)加添新油。但不宜添過 多，否則會(huì)引起變速變箱發(fā)熱，一般添限位閥流出油來為止。然后檢查動(dòng)臂能否起落和有無轉(zhuǎn)向， 如果動(dòng)臂能起落也可轉(zhuǎn)向，而裝載機(jī)無法行走，這是因?yàn)樽兯俦玫膿p壞缺油而造成的。動(dòng)臂不能起落 也無法轉(zhuǎn)向，裝載機(jī)不能行走，這種情況多是變矩器(meat machine)的鋼板連接被螺栓剪斷、或者是彈性板破裂而造 成的。把柴油機(jī)和變速箱一起吊出，然后拆除變矩器的柴油機(jī)的連接部分，查明損壞部位，更換 或修復(fù)損壞零件。

First, check the oil volume limit valve and the transmission pressure gauge of the transmission. If the transmission torque converter oil is found to be lacking, add new oil. However, it is not advisable to add too much, otherwise it will cause the gearbox to heat up. Generally, it is added until the oil flows out of the limit valve. Then check whether the boom can rise and fall and whether there is steering. If the boom can rise and fall, it can also turn, but the loader cannot walk. This is due to the damage of the variable speed pump and lack of oil. The boom can neither rise or fall nor turn, and the loader can not walk. This is mostly caused by the steel plate connection of the torque converter being sheared by bolts, or the elastic plate being cracked. Lift out the diesel engine and gearbox together, then remove the connecting part of the diesel engine of the torque converter, find out the damaged parts, and replace or repair the damaged parts.

6、只能前進(jìn)不能后退

6. Only forward, not backward

檢查變速壓力表所指示的壓力是否正常。如果掛倒擋壓力降低，就證明倒擋部分滲漏油太 多，把變速箱吊出，全部拆開檢查。取出倒擋活塞，更換活塞環(huán)，檢查摩擦片損壞的情況，可把 磨損較嚴(yán)重的摩擦片換掉，重新調(diào)整倒擋間隙1.6-2.6mm；如果倒擋不降壓，就證明前進(jìn)擋有卡 死的現(xiàn)象。使倒擋摩擦片打滑而造成倒擋不能行走，把變速箱吊出拆開，檢查一擋內(nèi)齒圈上面的隔離環(huán)是否斷裂。因斷片能把一擋摩擦片卡死，使倒擋摩擦片打滑而不起作用，造成只能前 進(jìn)不能后退?？砂迅綦x環(huán)取出，更換新的即可排除。

First, check whether the pressure indicated by the variable speed pressure gauge is normal. If the reverse gear pressure decreases, it shows that there is too much oil leakage in the reverse gear. Lift out the gearbox and disassemble it for inspection. Take out the reverse piston, replace the piston ring, check the damage of the friction plate, replace the friction plate with severe wear, and readjust the reverse clearance to 1.6-2.6mm; If the reverse gear does not depressurize, it shows that the forward gear is stuck. If the reverse gear cannot move due to slipping of the reverse gear friction plate, lift the gearbox out and disassemble it, and check whether the isolating ring on the first gear inner ring gear is broken. Because the fragment can lock the first gear friction plate, the reverse gear friction plate will slip and will not work, resulting in only moving forward and not moving backward. Take out the isolating ring and replace it with a new one to eliminate it.

7、驅(qū)動(dòng)無力，時(shí)走時(shí)停

7. The drive is weak and stops when it moves

(1) 檢查變速箱旁邊的油量限位閥，缺油時(shí)應(yīng)加補(bǔ)新油。

(1) Check the oil volume limit valve beside the gearbox, and add new oil in case of oil shortage.

(2) 如果油量正常，則應(yīng)檢查變速壓力表。若壓力表擺動(dòng)劇烈，表明供油不足，可依次檢查進(jìn)油  管路是否堵塞，膠管內(nèi)層是否因老化而起泡，變矩器濾清器是否清潔，濾清器的濾芯是否清潔。如果 是上述原因，清洗并用壓縮空氣（compact loader）多次沖洗堵塞的導(dǎo)管和濾芯，直暢通方可使用。起泡的膠管則要更換。

(2) If the oil quantity is normal, check the variable speed pressure gauge. If the pressure gauge swings violently, which indicates insufficient oil supply, check whether the oil inlet pipe is blocked, whether the inner layer of the rubber tube is bubbling due to aging, whether the torque converter filter is clean, and whether the filter element of the filter is clean. In case of the above reasons, clean and flush the blocked guide tube and filter element with compressed air for many times until they are unblocked. Replace the blistering rubber hose.

(3)觀察濾網(wǎng)上有無金屬塊和鋁屑等物，若有則表明變矩器和變速箱內(nèi)有損壞的零件，分解檢查，更換損壞的零件。

(3) Observe whether there are metal blocks, aluminum chips and other objects on the filter screen. If there are any, it indicates that there are damaged parts in the torque converter and transmission case. Disassemble and check, and replace the damaged parts.

8、變速器壓力正常，一擋和倒擋都不能行走，只有二擋可以正常行駛

8. The transmission pressure is normal. I can't drive in first gear or reverse gear. I can only drive in second gear

造成這種故障的原因多數(shù)是因不踏制動(dòng)踏板而直接換擋，把變速箱里的一、倒擋連接盤扭斷，使動(dòng)力傳遞不出來。而二擋是直接和太陽輪內(nèi)花鍵連接，動(dòng)力可直接傳出，所以二擋可以行駛。

The reason for this kind of failure is that the gear is directly shifted without stepping on the brake pedal, which breaks the first and reverse gear connecting plates in the gearbox, so that power cannot be transmitted. The second gear is directly connected with the spline inside the sun wheel, so the power can be transmitted directly, so the second gear can be driven.

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