Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
 

 


 
Go Back   Toyota Yaris Forums - Ultimate Yaris Enthusiast Site > Technical Forums > DIY / Maintenance / Service
  The Tire Rack

Reply
 
Thread Tools Display Modes
Old 08-19-2016, 05:10 AM   #1
BennyLava
 
Drives: 1987 Silverado
Join Date: Jan 2010
Location: Texas
Posts: 197
Replacement time, and brake bolt rubbers question

Hi all. Had a couple of questions about my 2009 Sedan brakes. I went to put new pads and rotors on it, but I'm finding the job to be a bit odd. First off all, the car has 152k miles on it, and the pads and rotors look to be fine. I bought the car with only 40k on it, so you know these must be the factory rotors and pads. Cause I've certainly never changed them.

But, I faintly started to detect that warped rotor wobble. It only seems to make itself known when you're at a certain speed, during braking. And it doesn't always do it. So its pretty faint evidence for the warped rotor wobble, but I have noticed it here and there. So I said fine, these brakes have 150k on them, may as well go ahead and replace the rotors and pads.

Well I get in there, and the rotors seem to be pretty flat, and the front side doesn't even have any lip, at all. The back side does have that small lip that old rotors start to get. But its not very big. The pads, seem to have at least half life still left on them, maybe even 2/3 life left. So at least by the looks, I'm a bit confused.

So what is your opinion? Should I just go ahead and replace them, even though there is some evidence that they may still be good? Should I perhaps wait another 10k, or 20k miles and see what happens? Or should I go ahead and do it now? Personally I dislike the idea of replacing something that doesn't need to be replaced at that time.

Lastly, I have another question related to the rubbers that go along the bolts that hold the top of the caliper, to the bottom. Those bolts that on some cars, you will take them out and clean them and put new grease on them, whenever you do a brake job on the car. I think they're called the caliper slide pins. Anyway, on the Yaris they seem to be actually attached to the caliper, by way of their rubber dust guards. How do I get these off? I tried pulling them out really far, but I can tell that if I continue pulling, it will tear the rubber guard. What do you do about greasing up these bolts, if anything?
BennyLava is offline   Reply With Quote
Old 08-22-2016, 02:15 AM   #2
BennyLava
 
Drives: 1987 Silverado
Join Date: Jan 2010
Location: Texas
Posts: 197
Somebody... anybody?
BennyLava is offline   Reply With Quote
Old 08-22-2016, 08:07 AM   #3
dogsridewith
 
Drives: 2007 2-door hatchback
Join Date: Jul 2016
Location: USAnotCA
Posts: 257
"...the bolts that hold the top of the caliper, to the bottom."
?
dogsridewith is offline   Reply With Quote
Old 08-22-2016, 08:53 AM   #4
WeeYari
 
WeeYari's Avatar
 
Drives: 06 Polar White 5dr, 13 Soul 4u
Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 4,545
Quote:
Originally Posted by BennyLava View Post
Lastly, I have another question related to the rubbers that go along the bolts that hold the top of the caliper, to the bottom. Those bolts that on some cars, you will take them out and clean them and put new grease on them, whenever you do a brake job on the car. I think they're called the caliper slide pins. Anyway, on the Yaris they seem to be actually attached to the caliper, by way of their rubber dust guards. How do I get these off? I tried pulling them out really far, but I can tell that if I continue pulling, it will tear the rubber guard. What do you do about greasing up these bolts, if anything?
Just compress the rubber boot toward the caliper away from the head of the glide pin head. There is a groove that the boot will pop out of and the pin will then be able to slide out free of the boot.
__________________
WeeYari is offline   Reply With Quote
Old 08-22-2016, 09:22 PM   #5
SirDigby
 
Drives: 2007 yaris 3 door
Join Date: Sep 2015
Location: Denver, Colorado
Posts: 656
yea. the rubber is stretched into a groove. be gentle. grease them pins good!
as to the rotors; if you have a second car, you can take them you get measured/machined at a NAPA or some other parts stores as well as machine shops. the parts stores will have the measurements on their computers, the machine shop will be able to measure with the specs you pull of the internet. (idk what they are)
you can return the rotors to where you bought them if you don't use them. if you keep them, store them upright, like books, to keep them from warping. (most everyone stores them improperly, even parts stores. it's a good idea to get NEW rotors machined in some cases)
SirDigby is offline   Reply With Quote
Old 08-23-2016, 03:25 PM   #6
BennyLava
 
Drives: 1987 Silverado
Join Date: Jan 2010
Location: Texas
Posts: 197
Quote:
Originally Posted by SirDigby View Post
If you keep them, store them upright, like books, to keep them from warping. (most everyone stores them improperly, even parts stores. It's a good idea to get NEW rotors machined in some cases)
Never knew that. I'll do it.

As for the little rubber boots on the bolts...

So yall are saying to just sort of gently pry them off the bolt? And that they will sort of just pop out of a grove, on their own? The boot doesn't need to be twisted in any way?
BennyLava is offline   Reply With Quote
Old 08-25-2016, 06:02 AM   #7
BennyLava
 
Drives: 1987 Silverado
Join Date: Jan 2010
Location: Texas
Posts: 197
bump
BennyLava is offline   Reply With Quote
Old 08-25-2016, 09:20 AM   #8
dogsridewith
 
Drives: 2007 2-door hatchback
Join Date: Jul 2016
Location: USAnotCA
Posts: 257
Brake caliper boot slider pins grease

Sounds like the same arrangement as my 89 Tercel and 91 Corolla. The bolt is clamping the slider cylinder (pin) which has the grooves, so the bolt is out of the picture when dealing with the boots. You push the slider so it is sticking more out of one side of the caliper body and starting to stretch the boot. Then, push the boot back towards the caliper and out of the groove in the pin. Then can push the pin through the caliper (not letting it get stuck in the pin groove), stretching the boot on the other side of the caliper. If a pin is really frozen, I've freed them by rotation with pliers gripping the very end.
What do people like for grease? One shop showed me a tube of ceramic grease when I asked about lubing sliders.
dogsridewith is offline   Reply With Quote
Old 08-25-2016, 10:39 PM   #9
SirDigby
 
Drives: 2007 yaris 3 door
Join Date: Sep 2015
Location: Denver, Colorado
Posts: 656
yea. groove on caliper, groove on pin. can be popped off on both sides easily. you can use a little screwdriver or a NOT sharp pick to pull up the edge it you can't squeeze it off. if you are really scared you can just buy new ones and just yank on the sliders and not worry about damage. I think new boots are like $4 each.
SirDigby is offline   Reply With Quote
Old 08-27-2016, 06:51 AM   #10
BennyLava
 
Drives: 1987 Silverado
Join Date: Jan 2010
Location: Texas
Posts: 197
Thanks all. It looked like those rubber boots would just keep stretching until they broke
BennyLava is offline   Reply With Quote
Old 08-27-2016, 08:15 AM   #11
tmontague
2zr-fe dream team
 
tmontague's Avatar
 
Drives: 08 Vios M/T, 05 4wd Vibe
Join Date: Oct 2012
Location: Hamilton Ont.
Posts: 1,600
Check the boot for flexibility. I'd recommend just buying buying replacement kit and installing new ones. That way if it tears you're not stuck.

Use rubber safe grease only and don't over apply it. I use rubbing alcohol to remove the old grease from the slider pins and it worked well.

I'd do that first and then see how the brakes are acting.
__________________
2zr swapped Vios, oil catch can, TRD rear sway bar, MI lowering springs, In cabin+under hood SSK, TRD shift knob, HID projector/Halo lights, 10mm rear axle spacers, custom header back exhaust, Front splitter, Sickspeed dual horns, Tokiko Blue's in rear, triple gauges, Whiteline bushings, Sparco pedal covers, Viper Keyless entry, DC Sports CAI, NST u/d crank pulley, solid poly engine mounts, MR Racing Flywheel, Konig Dial Ins 15x7 +35
tmontague is offline   Reply With Quote
Old 08-27-2016, 07:26 PM   #12
SirDigby
 
Drives: 2007 yaris 3 door
Join Date: Sep 2015
Location: Denver, Colorado
Posts: 656
Quote:
Originally Posted by tmontague View Post

Use rubber safe grease only and don't over apply it. I use rubbing alcohol to remove the old grease from the slider pins and it worked well.
I use sil-glide. it's a good non-drip, waterproof high temp grease. it's also good for many other moving parts too like door jams and sunroofs. and it's clear colored.
NAPA $6
SirDigby is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Time to replace rotors. Which brake upgrades? BennyLava DIY / Maintenance / Service 25 05-16-2016 05:57 PM
Question about brake booster replacement RutherfordmanX DIY / Maintenance / Service 1 01-09-2016 12:34 AM
Wheel bearing / Outer TRE / Control Arm replacement howto shepd DIY / Maintenance / Service 3 09-14-2015 04:20 PM
The Basics on Brake Upgrades kngrsll Performance Modifications 55 12-31-2014 02:44 AM
Wheel Bearing Replacement (FRONT) justjesus DIY / Maintenance / Service 11 04-26-2014 07:38 PM


All times are GMT -4. The time now is 11:32 PM.




YarisWorld
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.