AFCO 6690111 7/8 Inch Master Cylinder Rebuild Kit, Post January 2013
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AFCO 7/8" master cylinder rebuild kit for AFCO master cylinders manufactured after January 2013
Racer Note: Master cylinder bores are built with close tolerances. Stroking the master cylinder dry can cause damage to the internal rubber seals causing leaks, soft pedal, and lack of pressure. Never clean a master cylinder with carburetor cleaner or similar products as they will cause seal damage.
Racer Note: When rebuilding brake master cylinders and calipers, always lubricate internal parts with brake assembly fluid before installation.
This will keep seals and o-rings from becoming damaged by dry cylinder walls and pistons.
Item DetailsFor AFCO master cylinders manufactured
after January 2013
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Q & A
Anytime you purchase a new master cylinder, it's important to remove all the air before installing it. Here is a very helpful video tutorial that will show you how to bench bleed a new master cylinder.
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