Calliper rebuild

[John Kinnane]

G’day Eric, I have replaced the rotors and brake hoses. I noticed that the dust boot on one of the twin pistons is split,
so my question is on floating twin disc set ups if on goes should you replace the other one as we’ll even if it doesn’t look to bad?

Your videos on brakes was of a very great help. One more thing could you do a video on brake changes covering ABS.

Kind regards Johnno

Topic

[Gumpy Guss]

I usually figure that if one has worn out, the other one is probably about to go too.

The only exception is where I can see that one has undergone some rare kind of injury, like me poking a screwdriver through it.

[Bill]

I always like to replace calipers in pairs but it’s not mandatory. If the opposite caliper is obviously in good condition, like the pistons retract easily and there is no other damage, you should be ok just replacing the damaged one.

[Kevin Criswell]

[quote=”wysetech” post=75370]I always like to replace calipers in pairs but it’s not mandatory. If the opposite caliper is obviously in good condition, like the pistons retract easily and there is no other damage, you should be ok just replacing the damaged one.[/quote]

Wyse, I could be wrong, but I think he is talking about replacing the dust boots on one caliper. Sounds like one of the boots on a twin piston caliper is torn and he wants to know if he should replace the other boot on the same caliper.

Johnno

My personal advise would normally be to replace the caliper not just the dust boot. With that boot damaged, dirt and debris have been allowed to get inside along side the piston and likely have damaged the bore and weakened the seal. I usually try to never compromise with braking systems, if the caliper is suspect I would replace it. As my father used to say “For a car, failure to go forward is an inconvenience, however failure to stop is an emergency.”

[college man]

I agree with changing the caliper itself. as for abs video
what are you looking for? The braking system at the caliper is
the same.

http://www.ericthecarguy.com/faq/solving-brake-problems?start=4#RebuildingBrakeCalipers

[Bill]

Yeah Raistian77 Maybe I misunderstood also. I would replace the caliper rather than replacing and parts inside yourself.

[EricTheCarGuy]

I don’t recommend that a DIYer rebuild their own calipers. It’s much more reliable to replace them. Often when I find a dust boot that’s ripped like that, I put some silicone paste in the hole to keep junk out. I suppose you could also use RTV. After all, all you’re doing is keeping the dust out. Doing this may save you a lot of headache as opposed to replacing the dust boot.

As for ABS, for the most part ignore it. The base braking system is often separate from the ABS system. It’s only on some vehicles that you need to worry about bleeding the system with a scan tool because of the ABS system.

[Author]

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