变速箱齿轮常见的缺陷有：齿侧和齿端面磨损、齿面剥落、轮齿折断、齿圈松动或破裂等。修理时可根据具体情况采用下列不同的修复方法，下面济南自动变速箱维修人员为您分析：

Common defects of gearbox gears include wear on the tooth side and tooth end face, peeling off the tooth surface, broken teeth, loose or broken gear rings, etc. The following different repair methods can be used according to the specific situation during repair. Below, Jinan automatic transmission maintenance personnel will analyze for you:

变速箱齿轮的修理

Repair of gearbox gears

（1）换向法。左右对称的齿轮在出现单面磨损后，可将其左右齿轮调换位置或翻转180°继续使用。

(1) Reversing method. After unilateral wear occurs on gears that are symmetrical on both sides, the left and right gears can be reversed or turned 180 ° to continue use.

（2）镶齿法。变速箱齿轮中如果负荷小、转速不高的齿轮出现了断齿，可将断齿的齿根部位刨出或铣出燕尾槽，并以一定的过盈量压入新齿坯，经焊牢后整形可继续使用。

(2) Tooth insertion method. If a gear with low load and low speed in the gearbox has broken teeth, the root of the broken teeth can be planed or milled out into a dovetail groove, and a certain amount of interference can be pressed into a new gear blank. After welding and shaping, it can continue to be used.

（3）镶齿圈法。若变速箱上的塔形齿轮某部位出现轮齿磨损超限，可先将其退火，车去该部的全部轮齿，另制一个齿圈压装在车去的轮齿处，为防齿圈松动，可用电焊在接合处点焊，或沿圆周钻孔用稳钉固定。

(3) Ring gear insertion method. If the tooth wear of a certain part of the tower gear on the gearbox exceeds the limit, it can be annealed first, all the teeth in that part can be removed, and another gear ring can be made and pressed onto the teeth in the car. To prevent the gear ring from loosening, spot welding can be used at the joint or drilling along the circumference to fix it with stable nails.

（4）堆焊法。若变速箱齿轮的个别轮齿折断或齿面、齿端磨损超限，可先用汽油将齿轮表面的污物、锈渍除尽，使其露出金属光泽，再进行堆焊，然后经机械加工整形再经回火处理后可继续使用。

(4) Overlay welding method. If individual teeth of the gearbox gear are broken or the wear of the tooth surface or tooth end exceeds the limit, the dirt and rust on the surface of the gear can be removed with gasoline first to expose the metallic luster, and then welded. After mechanical processing and shaping, and tempering treatment, the gear can continue to be used.

变速箱壳体的修理：

Repair of gearbox housing:

（1）轴承座孔的修理。当轴承座孔磨损过度时，可用镗孔镶套法修复。镶套时先将套的外径尺寸加工好，压入座孔内，再将套的内径镗标准尺寸即可使用。

(1) Repair of bearing seat holes. When the bearing seat hole is excessively worn, it can be repaired using the boring and sleeve insertion method. When inserting a sleeve, first machine the outer diameter of the sleeve, press it into the seat hole, and then bore the inner diameter of the sleeve to the standard size before use.

应注意的事项是：各轴孔的圆柱度偏差应小于0.03毫米；同时，两座孔的共同轴心线与加工后表面的垂直度偏差在100毫米长度上应小于0.05毫米，不同轴各孔中轴线平行度偏差在全长上应小于0.06毫米。

It should be noted that the cylindricity deviation of each shaft hole should be less than 0.03 millimeters; At the same time, the deviation between the common axis of the two holes and the verticality of the processed surface should be less than 0.05 millimeters over a length of 100 millimeters, and the parallelism deviation between the axes of each hole on different axes should be less than 0.06 millimeters over the entire length.

（2）壳体裂纹的修理。变速箱的壳体出现裂纹时，可采用补板、焊补或胶补法修复。

(2) Repair of shell cracks. When cracks appear on the casing of the gearbox, they can be repaired using repair plates, welding repairs, or adhesive repairs.

补板时，先沿着裂纹在裂纹的两边对称钻几个直径4.9毫米的孔，攻M6螺纹，找一块3毫米厚的钢板，垫在变速箱壳体的裂纹上，并在壳体上新钻螺孔的对应位置钻直径6.5毫米的孔，垫上石棉垫，用M6×1.0的螺钉将铁板与壳体固定。

When repairing the plate, first drill several holes with a diameter of 4.9mm symmetrically along both sides of the crack along the crack, tap M6 threads, find a 3mm thick steel plate, pad it on the crack of the gearbox housing, and drill holes with a diameter of 6.5mm at the corresponding positions of the newly drilled screw holes on the housing, pad it with asbestos, and use M6 × 1.0 screws secure the iron plate to the shell.

焊补时，可先在壳体裂纹的两端钻直径3.5毫米的止裂孔，然后沿着裂纹开V形坡口，再用铸铁焊条冷焊。胶补时也要先钻止裂孔，开V形槽后再用环氧树脂胶粘贴。更多相关事项就来我们网站http://www.jnbsx.com咨询！

When repairing welding, a crack stop hole with a diameter of 3.5 millimeters can be drilled at both ends of the shell crack, followed by a V-shaped groove along the crack, and then cold welded with a cast iron welding rod. When repairing with adhesive, it is also necessary to first drill anti crack holes, open V-shaped grooves, and then use epoxy resin adhesive to paste. For more related matters, come to our website http://www.jnbsx.com consulting service