Brake caliper piston install

[NYNick]

A piece of thin wood to protect the piston and a C clamp should do the trick. Do it on the workbench.

That top left piston looks crooked btw.

[Pablo M]

11 hours ago, dlacey said:

Use

Any silicone based grease (vacuum grease, dielectric grease, etc) or anything miscible with brake fluid - e.g. castor oil (medicinal/cosmetic grade) is one of the ingredients of traditional brake grease and will work fine.

 

Don't use brake fluid, as the fluid trapped above the seal and below the dust cover will corrode the caliper bore.

So Silicone caliper grease would work then? That's readily available. Sil-Glyde mentioned above isnt available locally but I others are. 

[tech71]

Yes!  At this rate, an order of Sil Glide from Amazon would arrive before this is resolved😆

The seals in an automotive brake system are compounded to be resistant to "vegetable" based brake fluids ( glycerin, alcohol and additives) Thy dont like and were not compounded to resist minereral based lubricants.

Anything mentioned above would work, I use Dow Corning 4, a dielectric grease cause I have 2 tubes of it laying around.

In a pinch, to avoid a trip to town I would use Crisco shortening, but not the butter flavored stuff.

Edited January 4, 2023 by tech71

[Pablo M]

1 hour ago, tech71 said:

Yes!  At this rate, an order of Sil Glide from Amazon would arrive before this is resolved😆

 

3 weeks so not really.