IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

Front brake piston stuck

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

dliscomb
Posts: 4
Joined: Mon Sep 08, 2014 11:41 am
Year and Model: V70 2.4l '55', 1998
Location: Albany, NY
Has thanked: 3 times
Been thanked: 0
United States of America
dliscomb

Front brake piston stuck

Post by dliscomb » Sat Nov 09, 2019 2:19 pm

1998 V70 Base, >300K mi
Front passenger piston in the caliper opened enough to get the caliper off, but now it won't retract enough for the new rotor & pads.
I opened the brake fluid reservoir to relieve pressure.
I bought a 6" C clamp; no movement.

Does the piston get stuck? In this case, I was thinking I need new calipers. :x

Any advice will be much appreciated.

Kind regards,
Drew



User avatar
MoVolvos
Posts: 2042
Joined: Sun Jan 15, 2012 6:47 pm
Year and Model: 03S80T6~08C30T5
Location: NC
Has thanked: 23 times
Been thanked: 41 times
United States of America
MoVolvos

Re: Front brake piston stuck

Post by MoVolvos » Sat Nov 09, 2019 5:22 pm

dliscomb wrote:
Sat Nov 09, 2019 2:19 pm
1998 V70 Base, >300K mi
Front passenger piston in the caliper opened enough to get the caliper off, but now it won't retract enough for the new rotor & pads.
I opened the brake fluid reservoir to relieve pressure.
I bought a 6" C clamp; no movement.

Does the piston get stuck? In this case, I was thinking I need new calipers. :x

Any advice will be much appreciated.

Kind regards,
Drew
-
EDIT: Replace both if you have to replace the bad one. At 300K you got your mileage out of those.
-
Install the good side and gently step on the brake pedal so the stuck piston will come forward. Clamp it back and repeat to see if it will go further in. Could be rusted inside.
-
These users thanked the author MoVolvos for the post:
dliscomb


Blessings,

BKM

1998 S70 T5 - Donated
2003 S80 T6
2003 GS300
2003 Odyssey
2008 C30 T5
2019 Atlas SE 4 Motion

User avatar
erikv11
Posts: 9323
Joined: Sat Jul 25, 2009 2:03 pm
Year and Model: 850, S/V70, 06 S60R
Location: Iowa
Has thanked: 69 times
Been thanked: 220 times
United States of America
erikv11

Re: Front brake piston stuck

Post by erikv11 » Sat Nov 09, 2019 11:50 pm

If you get new calipers, grab the caliper slide pins from your factory ones. The pins on the rebuilds are usually pot metal junk.

Yes they will take the caliper as a core without slide pins. Because they're going to put in junk pins at the reman shop ...
These users thanked the author erikv11 for the post (total 2):
abscatedliscomb


'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 140k
'98 S70 NA, 210k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 280k
'06 S60 R, 160k
gone: '96 NA 850 210k, '98 NA V70 182k

User avatar
abscate
MVS Moderator
Posts: 18976
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 224 times
Been thanked: 741 times
Trinidad & Tobago
abscate

Re: Front brake piston stuck

Post by abscate » Sun Nov 10, 2019 4:32 am

Give me a ping on email if you need a hand, Drew

In Bethlehem south of city by 6 minutes , although you caught me in CA this weekend.

Usually if the piston won’t go back in its corroded inside. Keeping brake fluid fresh, under two years old is important, as well as integrity of the rubber dust boot around the piston.

Don’t be afraid to take the whole bleeder out and check for clogging though.

Kudos to Erik for remembering the caliper slide pin issue, that’s important, too.
These users thanked the author abscate for the post:
dliscomb


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary

dliscomb
Posts: 4
Joined: Mon Sep 08, 2014 11:41 am
Year and Model: V70 2.4l '55', 1998
Location: Albany, NY
Has thanked: 3 times
Been thanked: 0
United States of America
dliscomb

Re: Front brake piston stuck

Post by dliscomb » Sun Nov 10, 2019 1:49 pm

Holy mackerel, thanks to everyone for the feedback!

While I change motor oil regularly, and swap air filters, I've not been good about brake fluid changes. I am just now, later in life, learning what really needs to be maintained, vs. That What The Mechanic Said to Do. BKM, that video was excellent, really showed me how the thing works.

While the piston boot on the caliper in question looks fine, it sounds like I have a rusty cylinder housing. I can get this *one* caliper for about fifty bucks (remanufactured), but I can't find another to match it. New calipers will be pushing $200, ea.

Also, on the subject of brake line refill, which method do you guys think works better?
* vacuum, at the bleeder valve
* pressure, at the reservoir

Lastly, while I see that the flush/bleed procedure empties the *lines*, what about emptying and filling the caliper?

Kind regards,
Drew



dliscomb
Posts: 4
Joined: Mon Sep 08, 2014 11:41 am
Year and Model: V70 2.4l '55', 1998
Location: Albany, NY
Has thanked: 3 times
Been thanked: 0
United States of America
dliscomb

Re: Front brake piston stuck

Post by dliscomb » Sun Nov 10, 2019 2:09 pm

ok, I found L & R reman'd calipers, with mounting bracket.
I prolly shoulda replaced the rears when I was back there :\

Drew



User avatar
dalel
Posts: 35
Joined: Wed Dec 13, 2017 2:46 pm
Year and Model: 1998 V70
Location: Louisville
Has thanked: 4 times
Been thanked: 1 time
United States of America
dalel

Re: Front brake piston stuck

Post by dalel » Sun Nov 10, 2019 2:16 pm

I just did calipers and rotors on my '98 V70 a few weeks back. I went with Volvo brand rotors from FCP and loaded Centric calipers even though I know they aren't the best but would be better than what I had (and I only drive about one thousand miles a year.) Got the right side from FCP and got the left side, loaded Centric, at rock auto for about $50.

If you decide to stay with the caliper you have, you can get some of the old fluid out of the caliper by pressing the piston in (even with the pad still on) with bleeder opened. You can close the bleeder and repeat to work some new fluid through the caliper.



User avatar
MoVolvos
Posts: 2042
Joined: Sun Jan 15, 2012 6:47 pm
Year and Model: 03S80T6~08C30T5
Location: NC
Has thanked: 23 times
Been thanked: 41 times
United States of America
MoVolvos

Re: Front brake piston stuck

Post by MoVolvos » Sun Nov 10, 2019 4:34 pm

dliscomb wrote:
Sun Nov 10, 2019 1:49 pm

I am just now, later in life, learning what really needs to be maintained, vs. That What The Mechanic Said to Do.

While the piston boot on the caliper in question looks fine, it sounds like I have a rusty cylinder housing.
You are not the only one. I've have not kept a car more than 4 years until the last 6 years, although I've done brake work on every single one I've owned :roll: . However, brake bleeding was a must in the old days especially with front and rear drums. The cylinders never sealed well and I've have had to hone a few.

In the last year and a half I did the rear brakes on two vehicles due to rear passenger side calipers being stuck. They both push back with ease so I think I forgot to bleed them. The Odyssey is again metal to metal :lol: :x . Can't believe it. Well, I ran short of time and got lazy so didn't put in the brand new parking shoes (rears have shoes for parking brakes and disk for braking). Just as well, purchased two slotted and drilled rear rotors and some great pads on sale.

I also will attempt to bleed the brakes by suction for the first time. Seeing there maybe potential issues I will use the brake pedals to finish off the procedure.
-
viewtopic.php?f=1&t=91778&p=523506#p523506


Blessings,

BKM

1998 S70 T5 - Donated
2003 S80 T6
2003 GS300
2003 Odyssey
2008 C30 T5
2019 Atlas SE 4 Motion

User avatar
wizechatmgr
Posts: 1253
Joined: Thu Jan 12, 2017 1:07 pm
Year and Model: 1999 V70 XC AWD 2.4T
Location: Albany, NY area
Has thanked: 21 times
Been thanked: 52 times
Contact:
United States of America
wizechatmgr

Re: Front brake piston stuck

Post by wizechatmgr » Sun Nov 10, 2019 8:32 pm

dliscomb wrote:
Sun Nov 10, 2019 1:49 pm
Holy mackerel, thanks to everyone for the feedback!

While I change motor oil regularly, and swap air filters, I've not been good about brake fluid changes. I am just now, later in life, learning what really needs to be maintained, vs. That What The Mechanic Said to Do. BKM, that video was excellent, really showed me how the thing works.

While the piston boot on the caliper in question looks fine, it sounds like I have a rusty cylinder housing. I can get this *one* caliper for about fifty bucks (remanufactured), but I can't find another to match it. New calipers will be pushing $200, ea.

Also, on the subject of brake line refill, which method do you guys think works better?
* vacuum, at the bleeder valve
* pressure, at the reservoir

Lastly, while I see that the flush/bleed procedure empties the *lines*, what about emptying and filling the caliper?

Kind regards,
Drew
Don't worry about the caliper, it will bleed off air when you're doing the bleeding.

If you need any help, I'm over in Schodack but often can be found in Albany and over by Abscate's. I also have a currently working vida setup...


Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD - ~183k miles

Post Reply