A friend came by this past weekend to replace the brake pads on his 05 4Runner. (He has no tools and no driveway). I noticed the old pads had two backing plates on each pad. I've seen the instructions on replacing these and using a small amount of some substance to help eleminate noise. The new pads from Toyota came with one backing plate for each pad and an adhesive backed material to go between the brake pad and the backing plate. We both figured that is all you use and that you throw out both of the old plates on each pad. Was that a correct assumtion? Thanks in advance for your answer
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Sounds to me like the new pads he got are not Toyota pads. Where did he get them and where they in a Toyota box? The backing you are talking about is the pad shim. Toyota pads don't usually come with the shims. The proper shim is the two piece design. The self adhesive shim is a cheap aftermarket piece.
Mike
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“The significant problems we have cannot be solved at the same level of thinking with which we created them” (Albert Einstein) Moderator Brake Forum
Sounds to me like the new pads he got are not Toyota pads. Where did he get them and where they in a Toyota box? The backing you are talking about is the pad shim. Toyota pads don't usually come with the shims. The proper shim is the two piece design. The self adhesive shim is a cheap aftermarket piece.
Mike
They were bought from Toyota of Dallas.
Description: Pad Kit
Part No. 04465YZZ1A-TM
Made in USA
Genuine Parts 1018
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Scion Head Unit 08600-21802,
Custom leather heated seats 2 tone with TRD LOGO, Moonroof, ARE LID, ZR3 Laser Shifter, Denso IK22 .4mm Iridium Plugs, Scan Gauge 2,
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I would be suspicious. Counterfeit parts are very common now days. Could they end up at a dealership? You bet, they could have found a great deal on these supposed "Toyota" pads, and bought them to up their profit margine.
On the other hand, it is possible that this is something Toyota has done to fix a particular noise issue with their pads.
If you want to get to the bottom of this, this is what you might do. Go to a different Toyota dealer and ask to see a set of the same pads. See if the come with these shims. Also you may check to see if there are any technical service bulletins pertaining to these pads as a service part to fix a problem.
Mike
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“The significant problems we have cannot be solved at the same level of thinking with which we created them” (Albert Einstein) Moderator Brake Forum
i'll chime in on this in addition to mike's excellent advice having just done the front pads on a tundra.
my replacement pads (not toyota) came with a flat backing plate riveted to the thick pad mounting plate. at first i thought this was to replace the two, thin, shims from the old toyota pads. i installed the first side without the shims. on the second side, i decided to try the shims and they fit perfectly in place with the calipers fully compressed and the new pads installed. i then went online and found an exploded view of the original front brakes for my model (on TS). it, of course, showed the assembly the way it was originally on my truck. i cleaned up the shims, lubed them with moly based caliper grease (as shown in the exploded diagram) and installed them. both sides fit perfectly with calipers fully compressed.
i would say if there is room for them with calipers in the fully retracted position, you should probably get them and install them. moly caliper grease (not lithium soap based grease) is available at most autoparts stores. the moly grease has a much higher drip temperature and won't run down onto the braking surface.
i think if you don't install the shims you'll probably end up with vibration or squeeking issues down the line. my shims also had verticle grooves in them which i assume is to hold some grease but may also act has a kind of heat shield preventing some heat transfer from the pads to the caliper shoes.
I would be suspicious. Counterfeit parts are very common now days. Could they end up at a dealership? You bet, they could have found a great deal on these supposed "Toyota" pads, and bought them to up their profit margine.
On the other hand, it is possible that this is something Toyota has done to fix a particular noise issue with their pads.
If you want to get to the bottom of this, this is what you might do. Go to a different Toyota dealer and ask to see a set of the same pads. See if the come with these shims. Also you may check to see if there are any technical service bulletins pertaining to these pads as a service part to fix a problem.
Mike
There you go, proves I can't remember everything I read. Evidently a new pad design to fix some sort of problem Toyota was having with this particular pad.
In this case you are best to use only the shim Toyota supplies.
Cupidstoy, be very careful stacking shims, and frankly I would remove the riveted shim and only use the Toyota shims. Here is why, when a shim is riveted to a pad it tends to warp slightly. This and stacking shims can cause them to not to sit flat. As you drive they can actually act as a spring and push the pistons in ever so slightly. Then when you hit the pedal the fist time you will notice a lower then normal pedal.
If you are experiencing this, try removing the riveted shims and going with the OEMs only.
Mike
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“The significant problems we have cannot be solved at the same level of thinking with which we created them” (Albert Einstein) Moderator Brake Forum
There you go, proves I can't remember everything I read. Evidently a new pad design to fix some sort of problem Toyota was having with this particular pad.
In this case you are best to use only the shim Toyota supplies.
Cupidstoy, be very careful stacking shims, and frankly I would remove the riveted shim and only use the Toyota shims. Here is why, when a shim is riveted to a pad it tends to warp slightly. This and stacking shims can cause them to not to sit flat. As you drive they can actually act as a spring and push the pistons in ever so slightly. Then when you hit the pedal the fist time you will notice a lower then normal pedal.
If you are experiencing this, try removing the riveted shims and going with the OEMs only.
Mike
Thanks for all your help on this forum and particularly to my questions. I am glad to know the job was done correctly.
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03 Stratosphere Mica Stepside, 4.7 L, Supercharger, TRD Package, TRD Exhaust,
Scion Head Unit 08600-21802,
Custom leather heated seats 2 tone with TRD LOGO, Moonroof, ARE LID, ZR3 Laser Shifter, Denso IK22 .4mm Iridium Plugs, Scan Gauge 2,
Rhino Liner, Die Hard Platinum P5 battery 5.7 Killer
brake pad install question
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