Power steering is a necessary device of any truck, which greatly facilitates control. If the hydraulic booster is faulty, then any rotation of the steering wheel requires a lot of effort. It seems to be a small mechanism, but how facilitates the work of the driver.
How to pump the power steering, as well as why it is needed, is described in this article.
Power Steering: device and features
The power steering is a hydraulic system that is part of the steering mechanism and facilitates the control of the machine.
The main functions of the power steering :
- sustainable preservation of a given direction;
- reduction of labor costs, which the driver applies to change the direction of the wheels;
- the presence of a stable connection between the steering wheel and wheels.
Power steering includes the following systems and elements:
- a dispenser responsible for controlling fluid flows in system tanks;
- a hydraulic cylinder, which is responsible for converting the pressure of the fluid into the coordinated operation of the rod and piston;
- a pump that is designed to maintain a set head and fluid movement;
- power steering fluid;
- connection hoses integrate system parts;
- The electronic unit regulates the power steering.
Common power steering damage
We will tell you how to pump the power steering below, but for now we will consider some typical malfunctions and solutions to the GRU system:
1. Unstable movement of the car on the highway, it is required to periodically straighten the direction of the car following additional steering movements.
Probable causes and solutions:
- presence of free wheeling of the steering wheel - if it exceeds the permissible threshold, adjustment is required;
- wear of the elements of the screw pair of the steering device, if wear is present, then the screw pair must be replaced.
2. Damaging the filter of the pump, or littering: air has entered the hydraulic system, signs of this fact: cloudy oil and the presence of foam in the tank. To solve the problem, it is necessary to flush and bleed the system, then change the filter.
GUR pumping in KAMAZ
In this part of the article, we will talk about how to pump the power steering in KAMAZ. The air that remains in the hydraulic elements after the oil change procedure can cause the power steering to work incompletely. To properly pump the system, you need to perform the following steps:
- using a jack, fix the front wheels of the car in the air;
- unscrew the allowance valve, which is located on the steering gear ;
- turn the steering wheel all the way to the left;
- fill the pump with new oil;
- start the engine and fill the power steering tank with oil at the lowest speed until air bubbles from the hoses disappear;
- fasten the relief valve to the steering device;
- turn the steering wheel to the right to the end, then return to the left and again loosen the inlet valve - for air to escape, and tighten it back;
- perform the last described procedure until the moment when clean oil starts to come out of the valve.
How to pump the power steering on the Gazelle, we will describe below, but in the meantime, consider the process of replacing the power steering fluid.
Change the power steering fluid
The fluid in the power steering system needs to be changed in case of contamination, as well as after using the machine for six years. How to perform this simple procedure?
- First of all, it is necessary to unscrew the discharge hose, which leads to the steering device, while it is necessary to restrain the nut from turning.
- It is required to drain the fluid from the power steering system without starting the engine, turn the steering wheel to the right and left until it stops, until the fluid from the discharge hose stops flowing out. Then reattach the hose to the pump.
- Fill the system with fresh liquid.
- Start the engine. At this time, the liquid will leave and be distributed throughout the system. Fill the system with fluid until its level becomes the same.
- Bleed the power steering system.
The power steering fluid is a PSF type oil designed for power steering.
The power steering fluid must have the following properties:
- oil temperature 110 degrees C;
- the presence of additives to improve the quality of work under pressure;
- constant viscosity at various loads;
- lack of foam;
- rust warning.
How to pump power steering on the Gazelle
Pumping the power steering system on a Gazelle car is required in the following cases:
- when penetrating the air system;
- after performing repairs, which was accompanied by depressurization of the system.
The procedure for ridding the system of air:
- Fill the power steering system with hydraulic fluid.
- Lock the handbrake in the upper position, put brake stops under the rear wheels of the machine. Raise the front of the machine.
- Set the steering wheel in a straight position. Start the engine.
- Turn the steering wheel all the way to the right. At this time, air bubbles will appear in the fluid reservoir.
- Turn the steering wheel all the way to the left to exit air from the hydraulic system.
- Repeat the procedure until the air bubbles cease to appear in the tank. If necessary, add fluid to the maximum mark.
With such simple procedures, you will extend the life of the power steering system in your car and will enjoy comfortable driving for a long time.