█ engine or hydraulic pump failure:
当小型混凝土搅拌车发动机或液压泵发生故障时，可以用以下两种方法来：
When the engine or hydraulic pump of small concrete mixer truck fails, the following two methods can be used to solve the problem:
1.连接紧急驱动软管，依靠其他搅拌车的动力，驱动搅拌筒旋转并将混凝土排出，此时需要一台救援车的增援，故障车与救援车的连接方式。如果是减速器同时发生故障，则不能够采用这种方法。具体的操作步骤是：
1. Connect the emergency drive hose and drive the mixing drum to rotate and discharge the concrete with the power of other mixer trucks. At this time, a rescue vehicle is needed to reinforce the emergency drive hose, and the connection mode between the failure vehicle and the rescue vehicle. If the reducer fails at the same time, this method can not be used. The specific operation steps are as follows:
（1）准备好一根紧急驱动软管，卸下接管和接头盖；
(1) Prepare an emergency drive hose and remove the nozzle and connector cover;
（2）将故障小型混凝土搅拌车发动机熄火，将紧固螺母朝左旋松，再将旋钮朝右旋转直到不能再旋转为止，将高压软管从马达接头处卸下，将紧急驱动软管接到马达接头上，把紧急驱动软管上的接管与故障车卸下的高压软管相接，以防漏油；
(2) Turn off the engine of the small-scale concrete mixer, loosen the fastening nut to the left, and then turn the knob to the right until it can not be rotated any more. Remove the high-pressure hose from the motor connector, connect the emergency drive hose to the motor connector, and connect the connecting pipe on the emergency drive hose with the high-pressure hose removed from the fault truck to prevent oil leakage;
（3）将驱动车操作手柄置于空档位置，将发动机熄火，将高压软管从高压油管处卸下，将紧急驱动软管接到高压油管上，用紧急驱动软管上的接头盖将驱动车的高压软管盖起，以防漏油；
(3) Put the operation handle of the driving vehicle in the neutral position, turn off the engine, remove the high-pressure hose from the high-pressure oil pipe, connect the emergency drive hose to the high-pressure oil pipe, and cover the high-pressure hose of the driving vehicle with the joint cover on the emergency drive hose to prevent oil leakage;
（4）启动救援车的发动机；
(4) Start the engine of the rescue vehicle;
（5）将救援车的操作手柄拨“出料”位置，使故障车内的混凝土排出；
(5) Turn the operation handle of the rescue vehicle to the "discharging" position to discharge the concrete in the failure vehicle;
（6）紧急启动完毕，使两车各自恢复原状。
(6) After the emergency start, the two vehicles were restored to their original state.
2.打开搅拌筒检修孔的孔盖，旋松高压软管的管接头，将混凝土从搅拌筒的检修孔内排出。
2. Open the manhole cover of the mixing drum, loosen the pipe joint of the high-pressure hose, and discharge the concrete from the manhole of the mixing drum.
█液压马达故障：
█ hydraulic motor failure:
当小型混凝土搅拌车液压马达发生故障时，也有两种方法可供选择：
When the hydraulic motor of small concrete mixer fails, there are two methods to choose from
1.换上新的液压马达，使小型混凝土搅拌车搅拌筒恢复正常运转，从而将混凝土排出。
1. Replace the new hydraulic motor to make the mixing drum of small concrete mixer return to normal operation, so as to discharge the concrete.
2.打开搅拌筒检修孔的孔盖，卸下液压马达，将混凝土从搅拌筒检修孔内排出。
2. Open the manhole cover of the mixing drum, remove the hydraulic motor, and discharge the concrete from the manhole of the mixing drum.
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