11-29-2021, 12:29 AM
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#1 |
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Join Date: Nov 2020
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Spongy brakes after replacing wheel bearings on right side
Hi everyone,
Yesterday I replaced the inner and outer bearings on the front drivers side (RHD) and didn't had time to replace on the left side. Pre-loaded the lock nut according to the manual too. Torqued the lock nut to 98 nm, spinned the rotors a couple of times, torqued again, spinned again and then unscrewed it to 0nm, and tightened slightly it by hand (manual says 0-1.5nm but don't have a torque wrench for those values). However, after that went for a drive and the brakes were spongy. I press the brakes once, and they go lower than usual. However, if I release them once and then press again it brakes just fine. I just removed the brake caliper (didn't disconnect the hoses), so I didn't bleed the brakes...is it necessary? Any ideas of what could be happening? First time doing this kind of job, so might have done some dumb mistake. EDIT: Bled the 4 brakes just in case and didn't work out.
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'88 D21 AD 4x4 Crew cab TD23 Diesel (MT) Past: '90 BMW Z3 1.9 (AT) / '03 Toyota Yaris 1.0 (AT) '90 Renault 19 1.2 (MT)/ '02 Seat Ibiza 1.6 (MT) Last edited by PFDSA; 12-13-2021 at 01:37 AM. |
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11-29-2021, 02:15 AM
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#3 | |
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11-29-2021, 02:44 AM
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#4 |
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4/86 SE-V6 2 tone 4x4 HB
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The slides on the calipers. Allowed the caliper to move.
Did you spread the pads when you removed it? Pump it up a little to get the pads moved back in and let it sit to see if that did the trick. Should only take a few presses.
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| Thanked by: | PFDSA (11-29-2021) |
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11-29-2021, 02:53 AM
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#5 | |
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To remove the caliper, I just removed the 2 bolts (slides?) and then set the caliper on top of a box. Didn't touched in anything else. Didn't grease the slides because didn't know I was supposed to, and the slides didn't had any grease when I removed them. Could that be the reason? EDIT: Pumped the brakes like Deerhust suggested and then went for a 15 minutes drive. Brakes are still spongy tho, so it must be something else. Lack of grease on the sliders could do this?
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Current:
'88 D21 AD 4x4 Crew cab TD23 Diesel (MT) Past: '90 BMW Z3 1.9 (AT) / '03 Toyota Yaris 1.0 (AT) '90 Renault 19 1.2 (MT)/ '02 Seat Ibiza 1.6 (MT) Last edited by PFDSA; 11-29-2021 at 05:34 AM. |
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11-29-2021, 07:00 AM
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#6 |
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Join Date: Dec 2019
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Sounds like there’s air in the hydraulic system and the brakes need to be bled. Unless your master cylinder is/has failed, your brake pedal should never go all the way to the floor. Bleeding your brakes in the correct sequence is critical. I just did a full brake job on my fronts. But I replaced my OEM calipers and my pedal went to the floor. I also removed the brake hose, which you didn’t. But I would check the master cylinder and bleed the brakes to rule those items out.
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| Thanked by: | PFDSA (11-29-2021) |
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11-29-2021, 07:38 AM
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#7 | |
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Join Date: Nov 2020
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Anyway, guess will give it a try and bleed the brakes. Any other ideas? Wondering if the fact that the caliper slides aren't greased could be related.
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'88 D21 AD 4x4 Crew cab TD23 Diesel (MT) Past: '90 BMW Z3 1.9 (AT) / '03 Toyota Yaris 1.0 (AT) '90 Renault 19 1.2 (MT)/ '02 Seat Ibiza 1.6 (MT) |
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11-29-2021, 07:40 AM
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#8 | ||
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Ol'school Geek
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| Thanked by: | PFDSA (11-29-2021) |
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12-07-2021, 04:27 AM
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#9 | |
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12-07-2021, 07:08 PM
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#10 |
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the Flaming Marshmallow
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While removing the calipers, you spread the brake pads apart a bit.
After reassembly, the first pump of the brakes pushed the pads against the rotors and re-seated them. You should be good, unless it keeps going to the floor.
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