Subject Material

At the Garage 2

Published: 12.02.2010, Updated: 03.03.2017
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Dialogue while replacing brake pads.

 

Find words and expressions

Bilde av bremse skive.Disc Brakes

 

At the garage dialogue 

In the dialogue you have come across some technical terms and business expressions. Below you will find some explanations / definitions. Scan the manuscript and find the words / expressions that are explained.

  1. A circular steel part mounted on the axle of the car.
  2. To pump the brakes to let all air out of the system.
  3. A regular control of all vehicles imposed by the authorities.
  4. The cast iron housing of the valves that activate the disc brake.
  5. The actual part that creates the friction that stops the car.
  6. A brake system that was usual on older cars.
  7. Slang for a pound. An extra charge added to the price of services.
  8. The liquid in a hydraulic brake system.
  9. Slang for what you have got to pay.
Key
  1. Brake disk
  2. To bleed the brakes
  3. MOT (Ministry of Transport)
  4. Caliper
  5. Brake pad
  6. Drum brakes
  7. A quid 8 VAT (Value Added Tax)
  8. Brake fluid
  9. It will set you back
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DIALOGUE AT THE GARAGE

Manager: Now, here we are. First I must remove the wheel with this power driver. It looks like a drill, but it is actually a motorized wrench used to pull out the bolts. It's much quicker than doing it by hand.
Customer: I see. Now that the wheel is off, I can see the brakes, the disk and that thing - what is that called?
Manager: That is called the caliper, it is where the brake pads and the valve are housed. I can already see that your pads are worn and will need to be replaced.
Customer: Then what do you have to do.
Manager: I will have to loosen the caliper, which like I said, is the housing for the pads and the valve that puts pressure on the brakes, by means of fluid pressure.
Customer: I see. Do you have to remove it all together?
Manager: No, not if we don't have to, because then the brake fluid will come out, and then we have a more complicated process, putting it back on and refilling with fluid and bleeding it to remove all air inside.
Customer: Good. I'm glad we won't have to do that.
Manager: But we have to be careful, because once the caliper is loose from its bracket, we must not put strain on the pipe, which is made of copper to be ductile, but it may easily break.
Customer: Then what do you do to prevent that?
Manager: Well, this is an old trick - I just take a string of some sort and hang the caliper from the suspension, just so I don't put strain on the pipe, because the caliper is solic cast iron and quite heavy.
Customer: That seems a bit primitive, but I guess it works.
Manager: So I have to remove the pins which hold the brake pad in place, you see they go through holes in the caliper and the pads, and are locked with this split pin.
Customer: Well, that seems rather simple - in fact so simple I think maybe I could have done it myself.
Manager: Possibly, but you would need both proper tools and know what to do. Look here, now the pads are loose - you see the padding is nearly worn completely off. If you had gone on like this, you would have done damage to the brake disc. The disc looks rather bad as it is, but I think it will do a bit longer. A new disc is nearly 150 quid.
Customer: Good, let's keep them. Why are these things so easily worn? I mean, it is not that long ago that the car had an MOT, then they certainly will have checked this?
Manager: You see - this kind of brakes, as opposed to drum brakes, are more exposed to dirt and rust and are more easily worn.
Customer: What are drum brakes?
Manager: Drum brakes were usual on older cars, then the brake pads used to sit inside a drum, and were pushed out to the rims of the drum to provide brake effect by means of the same fluid pressure. But they were more protected from rust and dirt.
Customer: Why then were they replaced by this kind of brake system?
Manager: Well, it is a good question - but this kind of system is probably more effective, it takes less power to activate, especially when you apply a power system to enhance the pressure.
Customer: And I suppose that the producers are happy for the demand of spare parts.
Manager: Probably. Well, now I install the new pads in the reverse order of how they were dismantled. Then I push the caliper over the brake disc so it fits into the slot in the caliper. But I have to open it a bit or else it would not go over the disc, you see there are two pads, one on each side. So I have to push the pads back by hand to make room for the disc, and pry the caliper in place.
Customer: Nice, that seems to work well.
Manager: Then I put the bolts with new lock washers back on.
Customer: Lock washers?
Manager: Yes, you see - they are like a little spring that will lock the bolt so it will not move on the threads during wear and tear.
Customer: That's reassuring. Well this was interesting. How will I know that this has fixed my problem?
Manager: Once we get the wheels back on we will test the brakes on our roller system. Then we will see if this did the trick.

 

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