An incorrect effort when trying to pull the wire out of the pad often leads to a break in the vein inside the insulation or to breakage of the plastic fixture. To get the wires from the connector correctly, you must first determine the type of locking mechanism and use a specialized extractor or thin spoke to unlock the terminal legs. Ignoring the stopper position when extracted guarantees damage to expensive electric pads, especially in modern cars with a dense layout of tourniquets.
The process of dismantling contacts requires an understanding of the design contact group and precision of movements, since many connectors are disposable or extremely sensitive to mechanical stress. Depending on the manufacturer, for example TE Connectivity or MolexThe fixation system may differ in the location of the tongue and the desired direction of pressure. Before starting work, be sure to de-energize the system by disabling batteryTo avoid short circuits when accidentally touching adjacent contacts with the tool.
There are several basic methods of how to get wires out of the connector, and the choice of the particular depends on the availability of the tool and the type of wire. fixator. In some cases, it is enough to simply squeeze the plastic tongue, in others, a thin sting is required to enter a special technological hole. Mistakes such as pulling the wire itself lead to the pulling of the metal part from the plastic insulator, after which it becomes almost impossible to restore the tightness and reliability of the connection without a complete replacement of the unit.
Analysis of the design and types of connector locks
Before proceeding with the extraction, it is necessary to visually identify the type of blocking mechanism that holds the lock. contact-stick inside the hull. Most modern automotive and industrial connectors use spring-loaded fixtures that enter the slots on the metallic part of the contact. These fixtures can be located on top, bottom or sides, and to unlock them requires access to km of areas of the shoe body.
There are primary and secondary fixers. The primary lock is part of the metal contact itself, and the secondary lock is a plastic cap or frame that prevents the primary mechanism from acting inadvertently. To get the wire, you often need to remove it first. secondarywhich may be red, yellow or blue. Without its removal, attempts to squeeze the contact will be unsuccessful and may lead to breakage of the body.
⚠️ Never use force unless contact is easily extracted. Resistance means the lock is not unlocked and further pressure will cause irreversible damage. plastic-case connector.
It is important to consider the material from which the connector is made. Cheap plastic enclosures become brittle at low temperatures, and careless handling fixer It could break the pad wall. In such cases, it is recommended to preheat the connector area with warm air to room temperature to increase the elasticity of the plastic and reduce the risk of breakage.
Necessary tool for safe extraction
For quality work to extract wires requires a specialized set of tools, often called extractor-set. Use of improvised means such as pins or pins is permissible only in emergency cases, but does not guarantee the safety of contact. The professional tool has a precisely calculated geometry that allows you to unclutch the legs of the fixator without damaging them.
The main tool includes sets of probes of various shapes: flat, round and U-shaped. For connectors Delphi or Bosch Often, specific profiles of the squirrels are required. You may also need tweezers with thin sponges to grip the wire after unlocking and a magnifying glass or magnifier to visually control the process in the depth of the pad.
When choosing a tool, pay attention to the thickness of the sting. Too thick a tool can deform contact-group or damage the insulation of neighboring wires. A thin sting allows you to accurately affect the blocking mechanism, minimizing the risk of damage to the surrounding elements. In some cases, a magnetic holder is useful for extracting small parts if they accidentally fall inside the node.
Step by step instructions: how to get the wires from the connector
The extraction process begins with the preparation of the workplace and the provision of good lighting. First, determine the direction of the extractor introduction by examining the end of the connector. Insert the selected tool into the technological hole to the point to unclog the antennae. fixator contact. Simultaneously with this action, slightly pull the wire from the back, helping the contact to get out of the nest.
If the contact is equipped with a secondary lock, it must be carefully removed or thrown into the open position. This often requires a thin screwdriver, which is put on the locking element. After removing the lock, repeat the procedure with the main fixator. Movements should be smooth, without jerks, so as not to damage metallic terminals.
☑️ Checklist for safe extraction
After removing the contact, examine it for damage. The tendrils of the retainer must be whole and elastic. If they are broken or deformed, the contact will not be held securely in the connector when reassembled. In this case, it is necessary to replace the terminal with a new one, using cleavage for editing.
Table: Types of connectors and methods of contact extraction
Below is a summary of the most common types of connectors and features of working with them. The data will help you to quickly navigate the method of dismantling depending on the brand of the car or equipment.
| Type of connector / Manufacturer | Location of the retainer | Type of instrument | Features |
|---|---|---|---|
| TE Connectivity (AMP) | Up or down. | Flat probe | Removal of the secondary lock is often required. |
| Delphi / Aptiv | Side (double legs) | U-colored | You need to open both antennae at the same time. |
| Molex | Inside the hull | Thin needle | High contact density, risk of damage |
| Bosch (EV1, EV6) | Specific clamp | Specialized extractor | Used in fuel systems, sealability is important |
Using an inappropriate tool for specific types of connectors, such as Bosch or MolexIt can lead to the destruction of internal walls. Always check technical documentation or tool directories if you are working with an unfamiliar type of connection. A properly selected extractor significantly speeds up the process and guarantees safety. circuit.
Common Errors and How to Prevent Them
One of the most common mistakes is trying to pull the wire by pulling the insulation. This causes the metal contact to remain inside and the wire to break off. To avoid this, always keep the wire at the very entrance to the connector and pull evenly. If the contact is stuck, do not increase the force, but check if it is fully unlocked. fixer.
Another mistake is to use a tool that is too thick, which extends the lock too wide, deforming it. After this procedure, the contact may cease to hold in the connector even after re-installation. Use a tool of the minimum possible thickness, sufficient to squeeze the stopper. It is also dangerous to work without magnification, as it is possible to accidentally damage neighboring contacts already extracted.
Reconstruction and reconstitution of contacts
After successful extraction and carrying out the necessary work (measurement, wire replacement), the contact must be returned to the place. Before installation, make sure that the retainer mustaches are bent inside and have the correct shape. Insert the contact into the socket before a characteristic click, which signals that latch It was fixed in the opening of the hull of the connector.
Pull the wire with a little effort to check the reliability of the fixation. Contact should not be withdrawn without using the tool. If the connector is equipped with a secondary lock, set it in place by blocking a number of contacts. This will provide additional protection against vibration and moisture, which is critical for the electrician.
⚠️ Warning: After assembly, be sure to check the electrical circuit. Poor-quality contact installation can lead to sparking, heating and melting of the connector during operation.
Oxidation prevention and care of connectors
In the process of working with connectors, it is recommended to prevent contact oxidation. Use special sprays that remove oxide film and dirt. After cleaning, apply dielectric lubrication to the metal parts, but avoid grease on the plastic fixtures themselves, as this may make it difficult for them to work in the future.
Regular inspection of connectors allows you to identify incipient corrosion processes or weakening of wire fixation. If you notice that the wire starts to hang in the nest, this is a signal that lock-up worn or damaged. Timely replacement of such elements will prevent more serious malfunctions of electrical equipment.
The tightness of the connectors is another important aspect. If the connector is designed to work in conditions of high humidity, check the condition of rubber seals. When the wires are removed, the seals may be moved or damaged. When reassembling, make sure the rubber band tightly fits the wire and body, providing protection from class water. IP67 and higher.
Can I get a wire without a special tool?
In emergency cases, you can use a thin sewing needle, a sharpened stationery hacksaw or even a paper clip, flattened and bent at the right angle. However, the risk of damage to the lock or the housing of the connector at the same time increases significantly. A specialized set of extractors is inexpensive and pays off by maintaining the integrity of even one expensive connector.
What if the wire breaks inside the insulation?
If the wire broke during extraction, it is necessary to clean the end of the wire, remove the insulation to the desired length and install a new terminal. This will require a crimping tool (crimper) corresponding to the type of contact. Just twist the wires and isolate at the entry point into the connector can not - this will violate the tightness and reliability of the connection.
How do you know if the contact is over?
A properly established contact gives a clear click. And when he is not in the right place, he will not be able to move. Visually through the viewing window on the housing of the connector (if any) it should be visible that the lock has stood in its seat. If there is no contact, contamination or deformation of the nest may be hindering.
Do I need to clean the contacts before installation?
Yes, the use of dielectric lubricant (e.g., silicone-based) is recommended for protection against oxidation and moisture. The lubricant is applied in a thin layer to the metallic part of the contact. It is important not to overdo it so that the lubricant does not squeeze inside the body and does not disrupt the work of the mechanical parts of the fixture.