Changing Brake discs - Tips ?

keithclancy

Changing my brake disks are their on the 3mm limit.

Any specific tools recommended or tips ?

Have rotor cleaner, g-clamp, allen keys, torque wrench.

Is it necessary to change the fluid at the same time ? any idea what change interval is for dot4 ?

mickdw

I presume you are doing discs and pads.
Depending on the car and whether you are doing front or back brakes, the piston may need to be wound back instead of pushing back.
For the disc replacement, you will probably have to remove the brake carrier which can be tight at times. Make sure to clean all surfaces of the hub where the new disc sits and use the degreaser on the new discs.
If the disc is physically fixed to the hub via a screw like many vw, you may need an impact screwdriver
I would only do the fluid if its over 2 years old.

keithclancy

Yup, Discs and Pads,

Its a Volvo V50 so Floating disks, changing the front

Single piston which needs to be push back into the Caliper.

BrianD3

Front or rear discs? On my car the rear discs have the the wheel bearing pressed into them and the whole lot is held on with a large hub nut. Front is simpler, disc sits on the hub and is held on with a couple of small torx screws (and the wheel bolts)

MrDarcy

keithclancy wrote: »

Changing my brake disks are their on the 3mm limit.

Any specific tools recommended or tips ?

Have rotor cleaner, g-clamp, allen keys, torque wrench.

Is it necessary to change the fluid at the same time ? any idea what change interval is for dot4 ?

Post up year make model op

keithclancy

MrDarcy wrote: »

Post up year make model op

Volvo v50 2.0 d d4204t 1997cc 100kw 04-2004 t/m 05-2007

Front Discs


Pads

Tigger

some cars don't like the fluid being pushed back through the abs pump so put a bleed kit (clear tube) on the caliper and open the nipple if yer pushing the piston back

frank gooding

Get some copper slip for the back of the pads and rub a bit around the hub where it contacts the alloy wheel, this can save a lot of hassle in trying to get the wheel off in the event of a puncture.

Make sure and clean the shipping oil off the disk. Critical some carb cleaner and plenty of rags.

Muckie

Keep an eye on the brake fluid reservoir, grab a helper to keep
an eye on the level.

Getting air bubbles out is never much fun.

SouperComputer

Muckie wrote: »

Keep an eye on the brake fluid reservoir, grab a helper to keep
an eye on the level.

Getting air bubbles out is never much fun.

Air shouldn't be a problem unless you change the fluid. If anything what you are looking for is fluid overflowing from the reservoir when you push the pistons back in and making a mess. Assuming you elect not to loosen the bleed nipple.

OP Looks like you know this already, but make sure to clean all the grease off the discs before fitting them with brake cleaner. If you don't know when the fluid has been changed, change it if you are confident in your fluid bleeding abilities. Check that the system is in fact DOT 3\4 or DOT 5. DOT 5 is NOT compatiable with DOT 3\4 systems. 5.1 how Avoiever is. A DOT higher number is not necessarily better either. Avoid carb cleaner as it typically leaves a residue, not a major one, but if you have a choice, brake cleaner is the way to go, hence the name.