Passenger Rear Wheel Leaking Brake Fluid (2 Viewers)

[thetoyotaman]

Seven years ago I installed reman calipers and new brake pads all around and discovered today I have a leak. Roughly 25k and haven't had to replace pads yet. Haven't had a chance to investigate but wondering if there is any quality difference between the major auto parts store reman quality?

 

[Irish Reiver]

My guess is the calipers that were on it 7 years ago were OEM and likely lasted double what the reman units did. OEM Rear calipers are about $150 a corner from Ourisman. Well worth the peace of mind in my opinion.

 

[Kernal]

Have you checked the lines (flexible and hard)? If the hoses are the original that would be at the top of the list.

Take a few photos and post them up.

 

[jonheld]

OEM calipers can be rebuilt using OEM parts as opposed to being replaced. As long as the piston bores are free of corrosion, it makes no sense to replace them.

 

[thetoyotaman]

Looks like a caliper leak and for some reason my new iPhone pictures are too big to post.

 

[Kernal]

Reset the photo image file size and take some more photos??

Jack up the leaking side, remove the wheel, clean the caliper and lines off, let it dry, press on the brake pedal once (vehicle not moving), then take new photos??

 

[thetoyotaman]

Pics. Rubber hose is completely dry. I’ve never had a caliper leak before.

 

[Kernal]

"wondering if there is any quality difference between the major auto parts store reman quality?"

IME, yes. One set from a National chain still had old grime in every crevice (which made me wonder how well they were reman'd) so returned them. Another set from a different chain had water inside the caliper, returned those. Some people however have reported good luck with NAPA Premium reman'd calipers. FWIW

I ended up going with Toyota Reman'd front Calipers and new Toyota rear calipers. Perfect.

Would be interesting to see photos of the leak source once the caliper is pulled off.

Trivia and hard to tell from the photo but the banjo bolt for the flexible hose does not appear to be OEM??

 

[thetoyotaman]

IIRC the banjo bolt came with the caliper.

 

[Kernal]

Let us know what you find, pics help.

 

[thetoyotaman]

Ordered a replacement caliper. Suspicious I have a leaking booster too as I started hearing a weird noise when applying the brakes on a cold day before warmup. Gotta vacuum test it.

 

[thetoyotaman]

Pumped the brakes and took this picture. Pretty interesting as the fluid is running down the brake disc on the opposite side of the caliper piston.

 

[Kernal]

Take some photos looking inside the caliper as soon as you pull it off the rotor.

 

[thetoyotaman]

Well, I’m starting to think I might have an axle seal leak although one side of the caliper seal is suspect.

 

[Kernal]

What does the fluid smell like? Gear oil has an unmistakable pungent odor, brake fluid has a mild odor.

Got photos of the rotor (removed) and the rear hub on that side??

 

[thetoyotaman]

Tried smelling it and nothing. Picked up my new caliper anyways and hopefully will get a chance to dig in tomorrow or this weekend. It also came with one of those different banjo bolts and a tag on it that says failure to use their banjo will void warranty.

The threads I've read about inner axle oil seal leak seem to always show a wet outer axle hub or oil residue on it which I didn't notice.

 

[thetoyotaman]

Pulled the brake disc. Pretty sure this is a gear oil leak. Strange thing is that when I pumped the brakes fluid started running down the disc and it looked like I had some brake fluid loss. Maybe 2 issues going on at once.

 

[thetoyotaman]

The inner tire oil spray was what first alerted me to the problem.

 

[flintknapper]

You have a leaky axle seal AND a small leak with that brake caliper.

 

[Kernal]

One possible option for the rear hub seal, particularly if your
spindle(s) has a significant wear groove. FWIW I recently installed a set of these on my 97 model but too early to give any feedback.

Terrain Tamer Heavy Duty hub seals: anyone use them yet?

Was watching some You tubby videos out of Australia and came across one discussing the Terrain Tamer HD hub seals. Apparently the seal rotates on itself instead of on the spindle with the idea to reduce wear which is particularly important on the rear spindles which are not replaceable. The...

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