Author Topic: things to know when reassembling brake calipers?  (Read 716 times)

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Offline 75 super sport

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things to know when reassembling brake calipers?
« on: February 22, 2016, 03:21:40 AM »
i am getting ready to reassemble the brake calipers for my 75 cb750f, i would just like to know if there is a process i should follow, or any specifics i should know about. thanks in advance
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Offline flybox1

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Re: things to know when reassembling brake calipers?
« Reply #1 on: February 22, 2016, 06:58:16 AM »

please read this...

read this before you assemble anything...

http://forums.sohc4.net/index.php/topic,56544.0.html

This thread has gotten very confused.  Lets' review.
There are four products needed to restore a caliper.
1. Brake cleaner
2. Brake parts assembly lube for the caliper seal only.
3. Dow corning High vacuum grease.
4. Brake fluid

Each has it own specific application and needs for the task to be performed.

#1 is used to get everything clean.  (given the confusion, it had to be said)
#2 is used ONLY on the seal and must be compatible with #4, as some of it will invade the brake fluid chamber.
#3 is NOT used on the seal, as that would put silicone inside the brake fluid chamber.  This is a bad thing as the compounds are incompatible.  It is used behind the brake pads and a thin coat is used on the parts of the calipers and piston that are exposed to the elements and subject to water ingression.  The Dow Grease will not mix with ANYTHING.  It is a simple barrier with the very important property that it will NOT melt when the parts get hot and then run/creep into the brake pad friction material and provide lubrication between pad and disk rotor.
#4 is what makes the hydraulic part of the brake function. (I hope that part is clear.)



+1 That's the thread I was trying to find :)
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

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Offline jonda500

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Re: things to know when reassembling brake calipers?
« Reply #2 on: February 22, 2016, 07:32:39 PM »
I keep it simple and use just brake fluid. Thoroughly clean the calliper seal slot and fit a new seal & piston (dip them in brake fluid before installing), John
Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

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Offline 75 super sport

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Re: things to know when reassembling brake calipers?
« Reply #3 on: February 23, 2016, 03:16:47 AM »
Thanks for the feedback guys.
"Smoke em if ya got em"