Leaking at front brake master cylinder window
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1st Gear
Joined: May 2021
Posts: 5
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From: Singapore
Leaking at front brake master cylinder window
HI, I noticed brake fluid dripping down from my 2008 Road King FLHRSE4 front brake master cylinder. Made a check and noticed that the side window where we check the brake fluid level has corrosion and was leaking from there. I've double checked to make sure its not from the rubber seal that most problem came from. Does anyone has a quick fix on this problem or do I have to replace the whole brake lever assembly? Please help. Much thanks in advance.
Seasoned HDF Member
Joined: Jun 2006
Posts: 28,562
Likes: 3,955
From: Vermont
Try replacing the sight glass . . . 42854-06, comes with an o-ring and new glass. The corrosion is probably just the paint as the fluid ate it. Clean up the area and install new, repaint area
Stellar HDF Member
Joined: Nov 2005
Posts: 3,183
Likes: 837
From: KMHT KFMY
On a 2008 Master, although the sight glass may be available as a service item, you really might want to consider replacing the cylinder and lines if you have the $$$$
The rubber components have seen better days
The rubber components have seen better days
Seasoned HDF Member
Joined: Jun 2006
Posts: 28,562
Likes: 3,955
From: Vermont
I missed the part where you said it was a CVO and see now it has chrome master cylinders. Remember to have the ABS cycled by dealer (or you if you happen to have a tool) when changing/bleeding the brakes.
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