Repairing a jigsaw DIY

Repairing an electric jigsaw with your own hands is quite possible, but it is worth noting: there are troubles that cannot be eliminated with an ordinary tool. For example, the breakdown of an electric motor requires qualified intervention, since only a specialist will be able to eliminate such a fault.

Typical causes of breakdowns

Consider what happens to the jigsaw during its operation. Now it is difficult to find a model that would not have the function of feeding the web forward to reduce the load on the owner’s hand. The presence of such a mechanism of work causes increased wear of individual structural elements. This is a guide roller and stem bushings. Other typical situations include:

1. Extremely high load. Occurs with excessive zeal of the sawyer, who puts a lot of pressure on the horizontal feed. In low-cost models, the file can damage the fragile holder. Another common failure is a stock failure, as a result of which the jigsaw stops performing its function and the saw does not move.
2. Lack of service. Causes increased wear of the bearing, abrasion of the cam block in some models, the deterioration of gears.
3. Failure of electrical components system. This is a start button, which is often associated with the engine speed control.
4. Long working time. Affects the state of the current collecting surfaces of the engine, abrades brushes. Repair is to replace the relevant parts.

Periodic maintenance - cleaning the inside of small sawdust, replacing brushes and grease - will prolong the life of the electric jigsaw and prevent its failure.

Blade Malfunction

Many modern jigsaws are equipped with bells and whistles, which are their weaknesses.For example, some models often require repair fixing files, due to the presence of features such as:

• Quick clamp, which does everything for the owner of the tool: just pull the lever, put the canvas and work. Over time, the design becomes loose, fastenings become useless. Unfortunately, most of these clips can not be repaired, provided for their complete replacement.
• Lightweight screw mount - The real problem of the owners of cheap and average price tools. The nozzle on the rod, made of fragile alloys, has low strength, cracks, bolts break the seats. The repair consists only in the handicraft production of the corresponding product made of durable steel, since each line of cheap tools often has its own configuration of the file holder.

If the jigsaw has a classic screw fastening files, then repair it is not difficult. This is a sturdy and time-tested design, you can use a Phillips screwdriver bolts or a key. Clamping blocks - standard, to find a replacement for extremely worn parts is not difficult.There is a problem of thread wear, but in this case, you can cut a new one.

Repair steps

Disassemble the tool is easy. The body is divided into two halves, opening access to all parts of the mechanics. The first step is to remove the dirt and replace the lubricant, after which you can begin to repair.

Stock sleeve replacement

We note immediately that there are no spare parts in stores. You can find the appropriate part by purchasing a broken tool at the flea market. Often suitable parts from other devices and mechanisms. For example, jigsaws with a round stem output are the easiest to repair. A round bushing is fitted; if necessary, the inner diameter increases by tamping with a cone. This repair allows you to eliminate the runout and backlash of the rod, to improve the quality of the cut.

If necessary, made and unique locking clips (depending on the jigsaw model). When installing them in the case as a small lining, you can use copper foil.

Stock replacement

In inexpensive models of electric jigsaws, the rod is a thin metal plate of complex shape. When overloaded, it can simply burst. The item is replaceable, some models of jigsaws are compatible with others.The device must be carefully disassembled, fixing the process in the photo to carry out the reverse assembly. Then, with the detail removed, go to the market or shop. Then install the part and apply lubricant.

Jigsaw rod

Replacing brushes

For most models of jigsaws, if we are not talking about frankly budget ones, the kit comes pair of pullers. To replace them, just open the case: in the back of the engine, on the contact block you can immediately see the necessary elements. Repair is elementary: old parts are carefully removed, contact pads are cleaned of dust, wiped with alcohol. After that, it is enough to install new brushes.

Replacing the start button with speed control

It is possible to purchase a part for replacement both in specialized points, and in the shops which are engaged in sale of spare parts for electronic devices. The jigsaw body is opened, the corresponding part is released from the leads. It is often necessary to do this after unscrewing the terminal block screws. To use a soldering iron, modern models do not force. After removing the old, a new part is put and connected.

Disassembling the case and dismounting the button is best done before going to the store to buy the exact same part for the seat.

Start jog button

Rather rare failures include the failure of the engine's thermal fuse. The item is being replaced. Sparks may occur, which indicates not only a heavy load, but also wear of brushes and lack of lubrication. Therefore, periodic maintenance is the key to reliable operation of a jigsaw.

Conclusion

Carrying out any repair, you should observe precautions. The jigsaw must be disconnected from the power supply. The first thing to check is the condition and condition of the power cable, plug, contact in the outlet. Some models of jigsaws are supplied with a fuse located in the plug. This element is also worth inspecting and checking for serviceability.