bleeding brakes

there are a lpt of jobs i have never done on cars. this is another .

after a front caliper rebuild , is there a sequence to bleeding the brakes and do i have to bleed all 4 ?
thanks

Did you clamp of the brake flexy pipe on the side you were working on? If you did you only need to billed that brake, and the other side when you have done that Calipar.

If you have just let the fluid run though while you were working on the Calipar and run out then you will have to,bleed the whole system as the whole system will have air in it.

Did you clamp of the brake flexy pipe?


Steve.

no , i didn't clamp as it has goodridge steel braided hoses and didn't want to kink them so it look like i have to bleed all round
is there a sequence ??
thanks

you bleed brakes by starting from the furthest away from the master cylinder & work your way to the closest

Doesn't make much difference really, some workshop manuals say start at the furthest point and some say start at the closest point. I always start at the closest, having bled thousands of brakes over the years as a vehicle tech, I have never had a problem. I'll be servicing my Jimny this week end and I'll be bleeding the brakes, I will be starting at the drivers front wheel.

You wouldn't do any harm bleeding it either way mate.


Steve.

There is a bleed valve on the brake compensator above the rear axle that bleeds the front brakes. :huh:

facade , can you explain how to bleed the brakes using this valve ??
thanks rob

If your not confident or competent just keep it simple and bleed from each wheel.

Make it easy for yourself ! :blink:

Steve.

i dont mind easy jobs as long as i'm not shortcutting by not using the bleed valve. the car isn't a daily driver ( yet ) and i can devote plenty of time getting it right.

robs5230 wrote: facade , can you explain how to bleed the brakes using this valve ??
thanks rob

Same way as any wheel cylinder, just pretend that it has 3 front wheels.

Grandmothers and eggs maybe but

1 Fill reservior
2 Get someone in drivers seat with window open.
3 put ringspanner over nipple
4 attach hose.
5 stick hose into bottle.
6 Shout "down &hold"
7 Undo nipple.
8 Pinch up nipple
9 Shout "release"

Repeat from 6 until there are no bubbles

When the liquid in the bottle looks significant, top up the reservoir with new fluid.

TBH, most people don't bother with it, as they don't know it is there, not a disaster, as there is no reason for air to get into the line going back to the compensator if the compensator isn't removed.

So I suggest bleeding the front 2 first, then when you have a pedal, bleed the extra one (not the recommended practice: start with the one furthest away from the master cylinder) this will save introducing extra air into that long pipe run.

There shouldn't be any air in the back wheels either if you only messed with the front, but bleed anyway, only 1 nipple on passenger side BTW.

thanks very much , again, for all the advice guys.
rob

Just to add to this info, ABS-equipped cars* just have the three nipples (FL, FR and RL).  There is no LSPV.

*Clues: ABS warning light when you turn on the ignition, and an ABS pump unit in the nearside engine bay with brake pipes coming out of it.