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Swiftly
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Discussion Starter · #1 · (Edited)
At 250,000kms with 65,000kms on non Toyota OEM Semi metallic pads on the front. (Expected to get 95,000kms from Toyota OEM Pads on the front)
Noted:
  • Front Left inside pad at 1.5mm thickness
  • Front Left outside pad at 3mm thickness
  • Pad wear top to bottom was even.
  • Original Factory Caliper Pin Grease (atleast 13 years old)
  • Original rotors had 0.6mm lips on outer edge both sides, & had never been machined
Over time the lubricant of the Caliper Sliding Pins can get gunky/separate & dry up and will cause one side of the brake pads to wear more than the other.

The 2006 JTD plated Australian delivered Corolla’s came with either 255 Diameter Rotors or 275mm Diameter Rotors & either ASIN Brakes or Sumitomo Brakes and they have different Calipers, Slide Pins & Disc Brake Pad Shapes.
(Noted that the ASIN Brakes often came fitted with Sumitomo Brake Pads stamped with Made by Sumitomo for AISIN just to help the confusion).

Went down the rabbit hole of what grease to use on the Caliper Slide Pins…..Meh

For the Caliper Slide Pin ReGrease was thinking:
a) That silicon grease would not prevent water siting on the machined surfaces and would hold water.
b) The Toyota Red Rubber Grease may not have the film strength to prevent metal to metal contact on the point loaded ?six (6) sided? "Fluted Design" Disc Brake Caliper Slider Pins & that its heat resistance may not be suitable to stop gumming up.
c) Had heard there was a TSB saying the Caliper Slide Pin Grease had changed from Lithium Soap Base Glycol Grease to a High Temperature Silicon Grease.
[ eg TSB for front brake caliper rattle
Has a link to:
T-SB-0136-11 Prius Front Brake Rattle Over Bumps.pdf
“08887-80609 Disc Brake Grease”
“OP CODE BR1103 = Install #2 Slide Pin Bushings and Apply Disc Brake Grease”]
d) Was not sure if the Caliper Slide Pins would be circular or the upgraded six (6) sided "Fluted Design"
e) Was not sure if the Caliper Slide Pins would be fitted with a rubber shaft seal that would move inside the bore similar to the later Prius’s etc
f) No petroleum based greases permitted as Caliper Slide Pin lubricant.
h) Not sure if different Caliper Slide Pin lubricants are specified for different Ambient Temperature Ranges.
i) Not sure if higher water content held in suspension in the Grease might lead to that water content freezing
j) Not sure of the level of heat transfer into the caliper slide pins

Having removed the calipers all four (4) Caliper Slide Pins were moving, just not as freely as I would have liked.

My 2006 JTD Built Wagon has
  • 275mm Rotors (not the more typical/common 255mm rotors) & ASIN Brake Calipers,
  • Front Caliper Slide Pins were ?six (6)? sided "Fluted Design", not circular
  • My Front slide pins did not have a rubber grommet for bore sealing, and were same length & diameter.
  • External Caliper Slide Pin Dust Sealing Boots were undamaged.
On Front Caliper Slide Pin disassembly the remaining old grease looked kind of white & had partly separated into translucent semi clear & also greyish in the middle of the Pin where it appeared to have been rubbing on the bore of the cylinder, it was very tacky almost WAX-like it was definitely not pink.

Made sure to give the pin and bore a very good clean with brake cleaner.

Once cleaned with Brake Cleaner
  • the Front Caliper Slide Pin Bores were not scored,
  • the pin electro-coatings were clean & unpitted,
  • the dust sealing boots not split or cracked.
=>> Since everything was in good condition there is no apparent need to replace/spend money, after the clean.

I ended up using Option 4 on the Front Caliper Slide Pins:
Toyota Motor Corporation Japan Part# 08887-80609
Disk Brake Caliper Grease - 50g Tube - It is a very thick white grease
  • Polydimethylsiloxane
  • Silica amorphous
  • Polytetraflouroethylene
  • Silicone elastomer
Applied the very thick white grease part# 08887-80609 and re-inserted them. My Slide Pins were ?six (6)? sided "Fluted Design" so that would allow reduced friction on the Caliper Slide Pin bores, but higher point/line edge loading?

When inserting the newly greased Caliper Slide Pin, do not compress the boot. Insert the pin part way, then with the boot at it's normal position (not compressed or over extended) hold the boot in position and push the pin into the boot so as to not compress the boot or evacuate all the air.

So completed strip down, cleaned everything, re lubed & replaced…all good now

For the 275mm Rotors Standard as new 25.0mm thick. Minimum Thickness 23.0mm.
Had the Rotors lightly machined to remove minimum material, LF 23.7mm & RF 23.9mm after machining.

Will keep an eye on things.

Some additional detail below that I found useful, some parts of some of the methods I would not recommend. My preference is to take the Caliper Pin Brackets off the vehicle clean the Caliper Pin Bore, then put it in a vice with soft jaws for reassembly, rather than just pull the pins out add more lube and push them back in.

Apologies in advance for the length of the post but if it helps someone else …

############
Noted:
Sienna 3rd Generation (2011+)
In particular: Aug 4, 2013 motorbreath777

08887-01206 This is the part number for the grease Toyota is using. It runs about $8 per 100gr tube, You'll get about three times more grease than you will out of a 2 oz Permatex tube, plus it can be used in other areas where you're looking to lubricate a rubber seal; it can even be used inside you're brake system (cylinder piston seals, etc).

These pictures are good examples of what happens when you don't service your slide pins; they get sticky, your pads will wear unevenly, and they can eventually seize.

The wear pictured does appear significant with the caliper removed, but is not severe, and could be easily overlooked without close inspection. It is normal for the inboard pad to wear faster than the outboard pad as this is the first pad to make contact whenever the brakes are applied. (This condition is unrelated to the inboard tire wear that was overlooked.)

When the pin seizes the inboard pad will eventually wear down to nothing, leaving as much as 100% of the outboard pad in tact. This condition is often accompanied by a spongy brake pedal that makes it feel as if the system needs to be bled... When it gets this bad, you aren't going to be freeing the slide pin with a pair of vice grips, and you may even be looking at a new caliper bracket(s).

The bottom line is SERVICE YOUR SLIDE PINS, and save yourself time and money down the road.

These pictures are good examples of what happens when you don't service your slide pins; they get sticky, your pads will wear unevenly, and they can eventually seize.

&
&
&
&
Avalon 1st Generation (1995-1999) - Brake Caliper Slider Pin Grease
&
Caliper Brake Grease & Brake Lubricant (Possible Differences)
Front Brake components for Toyota Yaris

in the comments section
“Do not buy or use the WHITE BRAKE GREASE from Toyota. It comes in a white tube. That grease is for a special TSB that you do not needed.”
V’s
“Outdated manual, assumes brakes will be serviced annually”

“A glycol soap based lubricant will absorb moisture. It's better than an oil base lube for use around rubber parts, but pure silicone grease is superior and will not absorb moisture.”

“Pink coloured grease is Toyota Rubber Grease, comes in a tube. The pink grease is compatible with internal caliper parts such as the piston seal. I don't think it is suitable for caliper pin grease as it is not heat resistant.”

&
&
&
&
2010-2015 Toyota Prius front caliper sliding pins lubing
&
2005 Scion tc or Toyota front brakes with seized caliper pins
&
DIY: How to Remove and Lubricate Disc Brake Sliding Pins (VIDEO)
&
Brake Caliper Slide Bolt Extraction How To
- siezed from rust or incorrect grease….backyard mods
&
How to lube caliper slide pins on a 2004 Honda Element

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############
Noted:
ww2.justanswer.com/uploads/claytonhall/2009-06-17_191715_T-SB-0046-08.pdf
T-SB-0046-08 April 22, 2008 Page 6 of 6 Front Brake Rattle Noise Repair Procedure (Continued) J. Install the 2 front brake pads with anti-squeal shims to the disc brake cylinder mounting.
2009-06-17_191715_T-SB-0046-08.pdf
This TSB does not mention applying Part # 08887-80609 to the Caliper Guide Pins and it does not apply to my JTD Vin Number either.

&
Has a link to:
T-SB-0136-11 Prius Front Brake Rattle Over Bumps.pdf
“08887-80609 Disc Brake Grease”
“OP CODE BR1103 = Install #2 Slide Pin Bushings and Apply Disc Brake Grease”

&
2000_10_20 BR004-00 BRAKE PAD CLICKING NOISE.pdf

&

############
############
A key question….What grease to apply to Brake Caliper Slide Pins to prevent metal to metal contact, prevent rust & prevent them gumming up if/when the base oil/thinning agent evaporates out of the Grease?

Option 1:
Part# 08887-01206 Toyota Rubber grease 100g Tube $21 six (6) weeks delivery from Japan.
Lithium soap base glycol grease, reportedly a red-pinkish grease.
Some Toyota Repair Manuals (Yaris etc) show this for use on all sliding pins & bolts, as well as the piston & rubber, described as or use with all moving brake parts that are in contact with rubber.
  • guide rails and anthers
  • brake piston and cuff + rubber rings.
Composition
-Base oil / base oil CAS No. 9003-13-8 is a polyalkylene glycol (polyalkylene glycol oil) - 74-79%.
- Treating agent (lithium soap) - 12-17%
-Accounts - 7-12%.

Some have suggested (yabe listings) that TOYOTA Part #0888783010 replaces the obsolete version - Part# 0888701206.
=>> Part# 08887-01206 was available…six (6) weeks delivery from Japan. (which suggests that the Toyota Dealer Network in Oz is not using it)

Option 2:
Part# 08887-02706 - tube 100g Silicon Grease
Toyota Disk Brake Grease III, tube 100 gm, p/n 08887-02706 (silicone grease, mfr. Castle) is exist in Japan also.
=>> Toyota Australia did not list this Part Number

Option 3:
Part# 0888780409 Genuine Toyota DISC BRAKE SHIM GREASE
=>> Did not chase this part number

Option 4:
Part # 08887-80609 - tube 50 gm (High-Temperature Silicone Grease) $36 two (2) days delivery ex Sydney
  • Toyota Disc Brake Caliper Grease Part # 08887-80609 is a High-Temperature Silicone Grease for caliper pins in floating type brake caliper for US & European markets.
  • Toyota Disc Brake Caliper Grease Part # 08887-80609 is also used on the anti squeal shims for brakepads, to prevent any squeling.
=>> The Toyota Dealer indicated they are using Part # 08887-80609 on both the Caliper Guide Pins and the antisqueal shims on the rear of the Pads in Oz based on an FSM TSB that they were not willing to provide/ it was not publicly available.

Leafelet in the box for the 50g Tube I purchased.
Toyota Motor Corporation Japan Part# 08887-80609
Disk Brake Caliper Grease - 50g Tube
  • Polydimethylsiloxane
  • Silica amorphous
  • Polytetraflouroethylene
  • Silicone elastomer
Manufactured: 2019_01_25
Expiry: 2021_01_24

Option 5:
Pick an after Market Brand….a bit like Roulette you might get lucky WRT TOYOTA, six sided pin metal to metal wear prevention, seal compatibility, rust prevention & preventing gumming up etc

############
Noted that reportedly a new disc brake caliper slide pin set is available from Toyota, reportedly you get 4 pins, rubber boots and grease….not sure what grease comes with that kit.

Rob
 
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Swiftly
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Discussion Starter · #2 · (Edited)
Right....after a few weeks wait...Option 1: The Red Rubber Grease has turned up from Japan...

Will look at disassembly of & regreasing the rear brake caliper slide pins. Purchased this second lubricant incase the car brake caliper slide pins are not a "Fluted Design".

(Was not keen to take apart the rear brake caliper slide pins & discover the grease required was not Option 4: Part # 08887-80609 Brake Caliper Grease.)

***
Option 1:
Part# 08887-01206 Toyota Rubber grease 100g Tube $21 six (6) weeks delivery from Japan.
Lithium soap base glycol grease, it is a red-pinkish grease.
Some Toyota Repair Manuals (Yaris etc) show this for use on all sliding pins & bolts, as well as the piston & rubber, described as or use with all moving brake parts that are in contact with rubber.
  • guide rails and anthers
  • brake piston and cuff + rubber rings.
Composition
-Base oil / base oil CAS No. 9003-13-8 is a polyalkylene glycol (polyalkylene glycol oil) - 74-79%.
- Treating agent (lithium soap) - 12-17%
-Accounts - 7-12%.

Some have suggested (yabe listings) that TOYOTA Part #0888783010 replaces the obsolete version - Part# 0888701206.

Packaging Says:
Part# 08887-01206 Toyota Rubber grease 100g
Toyota Genuine Parts
Toyota Motor Corporation
1 Toyota-CHO, Toyota, AICHI
471-8571, JAPAN
Made in Japan
Product Name: Toyota Rubber Grease
Contents: Lithium Soap Base Glycol Grease

Manufacture:
COSMO OIL LUBRICANTS Co Ltd
33-7, Shiba, 5-Chrome, Minato-ku, Tokyo JAPAN
+81-3-3798-3831

HAZARD STATEMENT: WARNING Causes serious eye irritation
CAUTION:
Wash hands thoroughly after handling
Wear eye protection/face protection

No leaflet in the packaging,
The tube came in a heat sealed clear plastic sleeve with Bar Code & "Rubber Grease 100G 0887-01206" on it, .....not a "Typical Toyota or Toyota/Lexus Parts Cardboard Box with the Authenticity Holagram"

****
Looks like produced by these Chaps

Possibly this:
COSMO RUBBER GREASE
Grease with superior rubber swelling resistance, corrosion resistance, rust resistance, and lubrication performance
 

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Wow, that's the most thorough investigation into the caliper pin lubricant that I've come across by far! Thanks for all your hard work in detailing all the options. I've been googling around trying to find out what lubricant is recommended for lubing the pins on my '03 Highlander, and I've come across multiple conflicting recommendations.

Here in the US, you can order the Toyota Rubber Grease (P/N 08887-01206) from Toyota ($16) and I've also found it on ebay ($15). Wish Toyota would come out with a definitive recommendation for this maintenance item, but until they do I suppose I'll use the Rubber Grease. Thanks for the write up.
 

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Swiftly
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Discussion Starter · #4 · (Edited)
OK so at 262,000km got a chance to do the Rear Caliper Slide Pins.

Original OEM Rear rotors at 9mm
Original OEM Rear brake pads at 5mm

14mm offset ring spanner two bolts & the Rear Calipers come off for hanging safely by wire. (On my wagon, Insufficient clearance to the rear strut/Spring assembly for standard socket & breaker bar.)

Unlike the Front Calipers you cannot separate the slide pin assembly & mounting bracket from the rest of the caliper to clean & reassemble in a vice. [unless you disconnect the brake fluid pressure line & buy the new crush gasket]
So you have to clean & reassemble on the car.

Rear Caliper Pins are actually "Circular Sleeves over bolts". (The sleeves are circular & sliding interface is circular, not "Fluted Pins" like the Front Calipers.)
a) The longer rear bolt & sleeve [47721E (Sub)] has two removable rubber seals [47775D (Sub)] the OutBoard ones were marked A33, InBoard ones were marked A34 on mine (however they looked/measured the same).
b) The forward rubber boot seal [47775D (Main)] for the shorter bolt & sleeve [47721E (Main)] is not easily removable (did not want to tear it) so just cleaned internals in situ.

The void between the sleeves & bolts had considerable corrosion (not the critical sliding interface surface so does not matter), probably Bi Metal Accelerated & likely the Bolts had not been greased at the factory on assembly into the Sleeves. Removed the bolts from the Sleeves & wire wheel cleaned the bolts.

The Sleeve Aperture for the bolts cleaned up okay by mounting a 10.5mm drill bit in a vice & rotating the Sleeves over the drill bit by hand.

Sleeves machined surfaces that interfaces to the caliper arm apertures (The critical sliding interface surface) showed rub through of the surface coating at two locations on opposite sides of the sleeves & the Original Grease on the Rear Caliper Sleeves had turned black & gummy. Sleeves were smooth enough for reuse though.

Inside the boots some of the original rubber grease was yellow & the same consistency as the Part# 08887-01206 Toyota Rubber grease 100g Tube - Lithium soap base glycol grease, it is a red-pinkish grease.

After a thorough clean.
Rear Caliper Sleeve Sliding Interface
& boots assembly - Applied the Part# 08887-01206 Toyota Rubber grease 100g Tube - Lithium soap base glycol grease, it is a red-pinkish grease.

For the bolts inside the Rear Caliper Sleeves, to stop corrosion in the void between the bolt & the sleeve aperture - Applied Part # 08887-80609 - tube 50 gm (High-Temperature Silicone Grease), White thick grease.

See what happens.

Rob
 
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