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Right.

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This is a short follow up
video to the previous one on the service of rear brakes

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and on this one, we're just going to do the final bit,
which adjusting the handbrake.

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Regarding the MOT, the handbrake itself

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must kind of operate and have a locking

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mechanism.

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Generally, it's a ratchet fitted at the bottom.

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So to test it, we lift it up, apply it and then we just
tap it with one hand if it drops back to the floor.

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We need to find out why. 
If it's something we can fix, great.

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If it's not, then unfortunately, it's a new handbrake lever,
so the mechanism itself must secure it.

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The button itself, must release it back down.

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The other thing you need to have on a hand brake
for the test is it should have reserved travel

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Okay if that travel is run to the top and that brake

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is still not fully engaged, that's an MOT fail as well.

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So the last part of this job where we're adjusting it is
we need to get the right number

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of clicks from the bottom to the top to give us the reserve
travel, OK?

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Generally, it's about four to five clicks
if you go less than that.

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It's OK if you're quite strong
and you can just pull the handbrake up.

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But for some customers, that's too tight and then you
put the handbrake on and then they can't release afterwards.

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So we need to find a happy medium.

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So prerequisites for this before we kind of adjust it is
we need to slacken the cable off itself.

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So we've got an adjuster and a lock nut.

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95% of vehicles now it's fitted inside the car.

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Years ago, some older vehicle it was underneath the vehicle,
so we'd have to go

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and locate it,
put it on a ramp and adjust it from underneath.

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But now they're kind of generally fitted inside,
so it makes life a lot easier.

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So we've got an adjuster and a lock nut,
so we slacken that off.

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Run it up so now we've got plenty of free play.

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This part is called a compensator.

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So on this brake system, we've got a short cable

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from the lever to the compensator
and then a separate cable to each drum.

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What this means from a replacement point of view is

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we don't need to replace the whole part
if we've got one defective item.

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OK, the cables are plastic coated
and this is to resist corrosion if water gets in there.

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The job of this compensator,
if I show you there is it moves side

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to side to take up any slack in one side or the other.

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Some vehicles, the way the handbrake set up, one

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cable is shorter than the other,
so we must have a compensator in the middle.

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We'll cover electronic parking brakes in a separate video

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because that is a whole different set up regarding
they're not very mechanical.

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It's all electrical and computer operated.

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OK, so we've slackened the adjuster right off
as far as possible,

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we now need to pump the brake pedal as in the last video,
just to check the drums are centralized.

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We turn them by hand.

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So light pressure on that side that's all good.

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Light pressure on that side.

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That's good as well.

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So we can know they're safe to adjust.

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OK, we're checking the cables for condition.

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They're all good, OK, they're secure.

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The ends haven't come out.

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There's nothing adrift. There's no water in there.

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That cover there just fits back over the side to keep it watertight.

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OK, if you do see a bit of corrosion on these, wipe
over them

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with WD 40 or something similar
and it just keeps the water at bay.

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OK, so now we need to see how many clicks
we've got on our brake.

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So steady pressure.

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Yeah, so that has no reserve travel.

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That's right at the top,
and the brakes aren't fully engaged.

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There's no way they'd hold the weight of the car,
so we now need to adjust it.

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So if we take it back off.

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Double check it's spinning freely.

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That now means we know the linkage is okay, so we can push
the cable through a bit and we just wind it down by hand.

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A bit of an estimate as to where you think it is,

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and then we'll reapply the brake.

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I'd say that was nine, I'd say that was too many,

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so we need to half that generally.

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Seven, heading in the right direction.

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Five, I'd say five is about right.

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So we check the rear brakes. We can't turn those.

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So they're engaged.

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This is where the important bit,
this is your time consuming bit now.

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We release the brake off.

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And then we double check the drums are free.

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Yes, they are.

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If they're not, we need to find out why
and if that involves taking the drums off.

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Unfortunately, that's the way we're going to have to go.

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Okay, so I'm happy with that now.

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We can now tighten the lock nut.

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Double check again.

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Yes, that's engaged, that's engaged now.

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We can now lift release the button.

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Spin the drums again.

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Happy with that.

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They're free enough.

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Last thing to do before we put the vehicle back together.

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Is wipe the lever, make sure that's good for the customer
to have the vehicle back and then we can refit it.

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And then refit any trim we've taken out.

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Last thing road test the vehicle,
make sure your rear brake service has been effective.

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Come back, double check your handbrake
and then it's OK to hand back to the customer as completed.

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And that concludes this bit of the video.