As a concrete transportation vehicle, the concrete mixer truck must comply with the provisions of the Ministry of Communications Decree No. 13 of 1990 and implement the maintenance and repair system of "periodic inspection, compulsory maintenance, and condition-based repair". Under this premise, combined with the actual situation of the concrete mixer truck, maintenance and repair are done well. In terms of daily maintenance, in addition to the conventional maintenance of automobile engines, chassis and other parts, concrete mixer trucks must also do the following maintenance work:
1. Cleaning of storage tank (mixing drum) and inlet and outlet
Since the concrete will solidify into a hard mass in a short time, and it is corrosive to steel and paint, after each use of the concrete storage tank, the concrete adhered to the concrete storage tank and the inlet and outlet is necessary for daily maintenance. Serious work. These include:
Fill the washing water tank that comes with the car with water when loading;
b. After unloading at the construction site, flush the discharge tank, and then add 30-40 L of washing water to the concrete storage tank; keep the concrete storage tank turning slowly at the forward speed when the vehicle returns;
c. After loading, rinse the inlet and clean the concrete left near the inlet;
d. Fill the washing water tank that comes with the car with water when loading;e. Remember to discharge the sewage in the concrete storage tank before the next charging.
2. Maintenance of reducer
According to the different service life, the following examples should be used for maintenance of the reducer:
a. Oil change: Change the oil after 500 hours of use in the first period, and then change the oil every 1500 hours. As long as the full year is used, no matter how many hours of work, the oil must be changed.
b. Oil product: The concrete reducer of this car is the original imported reducer. The gear oil used is heavy-duty vehicle gear oil GL-5, and the viscosity grade is 85w / 140.
The concrete mixer truck used the Rexroth piston pump, as the series A4VTG90, and the piston motor A2FM80…
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