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Brake System

Shantui SL50W loader brake system troubleshooting methods for five common faults
The loader has played a vital role in today's engineering construction. A good grasp of the characteristics of the loader's braking system and simple troubleshooting methods can ensure the normal use of the loader. Below, the editor will share with you the troubleshooting methods of five common faults of the loader brake system, I hope it will be helpful to everyone!
1. Run off after braking
The direct cause of deviation is caused by the unequal braking torque of the wheels on both sides. Common causes of failure:
(A) The Brake Caliper disc has serious oil pollution, and the friction system is seriously reduced, resulting in an imbalance of braking torque. At this time, the oil on the brake caliper disc should be removed;
(B) The sub-Cylinder piston is stuck and cannot work. Step on the brake of the stationary car, observe the working condition of the sub-cylinder, and dismantle and inspect as necessary.
2. The pressure of the barometer rises slowly
Main reason:
(A) Air leakage in the pipeline;
(B) The air pump is not working properly;
(C) The one-way valve is corroded and stuck;
(D) The drain bolt of the oil-water separator is not tightly closed or the pressure regulator valve is leaking.
Troubleshooting method: First, remove the air leakage in the pipeline, and then check the working status of the air pump. Remove the air pump outlet pipe and press the air outlet with your thumb. If the exhaust pressure is low, the air pump is malfunctioning. If the air pump is in good working condition, check the oil-water separator oil drain plug or pressure regulating valve to avoid bypass, and troubleshoot through inspection. Finally, check the two one-way valves in the three-way joint. The blockage of the one-way valve will cause the air reservoir to fail or slow down. In this way, the brake system failure of the loader can be solved.
3. Insufficient braking force, weak
Main reason:
(A) The brake leaks;
(B) There is air in the brake oil circuit;
(C) The wheel hub oil seal is broken, and there is grease on the clamp plate;
(D) The brake is severely worn and the friction surface is burned;
(E) Air pressure adjustment is too low.
The above-mentioned loader brake system failures can be eliminated by repairing, adjusting or replacing parts according to their respective causes.
4. When stepping on the brake, oil mist sprays out
(A) The brake light switch is damaged, and high pressure oil is sprayed from the switch interface. Replace the switch to solve it.
(B) The length of the piston rod of the afterburner pump is too large. This situation may occur when the afterburner pump assembly is newly replaced. The cause of the brake system failure of this loader is: the piston rod is adjusted too long, causing the piston stroke to be too large when the afterburner pump is working, and the brake fluid is drained The hole flows back into the afterburner pump and ejects.
During installation, the working stroke of the piston should be measured to determine the length of the piston rod.
5. Brake issuance
Fault phenomenon: The loader is struggling to walk and touch the clamp plate with hand after parking, the clamp plate becomes hot. main reason:
(A) The friction plate wears thin, the dust ring is damaged and water enters, and the piston is corroded and stuck;
(B) The return spring in the afterburner pump is weak or broken, and the high-pressure oil cannot be added.


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