Air compressor - top 3 common issues problems and easy fixes

 The 3 main problems or faults i come across on air compresors are , 1) Pressure switch test for continuity across live and meutrals , while your at it test the on-off switch as well. 2) if the motor hums it is likely to be the capactitor , test it to ensure the correct reading which is found on the side of compressor. 3) If everything else works but air is not filling tank check the piston and head and the inlet out let valves in the head and clean it all out , usually dirt prevents pumping .


See video of this process below




Do i drill into the mortar or the brick

If you are going trough a wall for a pipe or something then it maybe easier to go thorugh the mortar but if you are fixing to a brick wall to hang something or fit something then the rawlplugs  will need to be fixed into the brick to give a solid fixing.

Use good quality drill bits and measure how deep you need to drill so as not to damage the fabric of the building more than needed.


See video of this entire process below 






Drill into tile without cracking tiles


Drill into tile without cracking tiles





Buy multimeter on Ebay UK here


Tips for drilling into kitchen or bathroom tiles.

How to drill into bathroom kitchen tiles without damging or cracking tiles , to fit shower , shower head or rails using rawlplugs .

Use quality bits , the diffrenece between cheap and quality drill bits is huge pay a bit extra and use quality.

Do not use hammer setting until drill vhas cleared tile hammer can damage tiles blow out the back of them and weaken or just crack tehn in half.

Do not drill on the outer edges of the tiles as this is obviously a weaker place to drill same with groat you will get a weak fixing and edges of tiles can chip and snap.

Mark out the size you need to drill i use rawlplug length and use tape to mark the drill bit depth needed.This will eleminate excess damage to fabric of the building.

Drill slowly tiles are weak and crack easy to take you time no need to rush let the drill bit do the work without much force.

Hold drill perfectly straight and do no mode it around to much 

Once through then select hammer for the brick underneath but drill straight.

Use straight screws not tapered to avoid expanding the plug to much and cracking tile.

See video below 














Hilti and Dewalt SDS core drill checking - replacing motor brushes ( TE6 / D25313 )

Checking and replacing drill brushes is an easy maintenance task , just remove the outer covedr to access the brushes pry free the retaining springs ensuring not to lose or break the spring. then unclip electrical wire and brush should easily remove. Fit new ones clip back up the electrics and put the spring retainers back in position. 




Buy multimeter on Ebay UK here


See this videos below for Hilti and Dewalt brush replacement.






110v transformer scrap yard find testing and repair

Troubleshooting fault finding and repair of a 110v site safety power tools transformer



Buy multimeter on Ebay UK here



I tested the secondary side at the place I found it if the mains lead is on it you can test the primary side too as long as cut out switch is fine.

110v transformer scrap yard find testing and repair

here is test secondary side at the 110v socket as i did at scrap yard if the mains lead was on you can often test primary too but this had no cable so it was a gamble buying.

110v transformer scrap yard find testing and repair

Best to test inside the transformer if you are inside as you can tell by readings all looks ok 

110v transformer scrap yard find testing and repair

Now testing to earth these are centre tapped to make then 55v to earth on both P / N sides for safety 

110v transformer scrap yard find testing and repair

110v transformer scrap yard find testing and repair

Now I test the primary side and the cut out switch at same time 

110v transformer scrap yard find testing and repair

So below the blue wire in junction box and brown coming from the cut out at rear of unit are the primary wires

the black and read ones at the front left side of unit are the secondary sides 

110v transformer scrap yard find testing and repair

So ive attached a bit of 230v flex cable temporary to test the unit live 

110v transformer scrap yard find testing and repair

116v 

110v transformer scrap yard find testing and repair

58v 

110v transformer scrap yard find testing and repair

58v id say this unit works perfect 

110v transformer scrap yard find testing and repair




See this entire process in the below video 




Air compressor , fault finding repair testing motor, capacitor , pressure switch wiring , checking oil

How to test the motor and capacitor on an Air compressor.



How to wire and set pressure switch 





How to check drain and refill the air compressor oil