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2001 V70XC - Brake line and Caliper Service Topic is solved

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

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xHeart
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Re: 2001 V70XC - Brake line and Cliper Service

Post by xHeart » Mon Nov 11, 2019 5:32 pm

Awesome!
Removed the brake pedal - steering jig, and fluid drips out. Both sides needed surgical procedure and line flare to restore -- flex line, caliper, and brake pads.
MVS_Brakeline_0489.jpg
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Golden Retriever | 2014D VIDA DiCE | 2013A XC90 +144mi/231km | 2001 V70XC 1st Owner +196mi/ +315km | 1997 Volvo 850 NA 1st Owner +180mi/ +289km
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Re: 2001 V70XC - Brake line and Cliper Service

Post by cn90 » Mon Nov 11, 2019 7:01 pm

xHeart,

I admire you for doing the flare in situ.
It is hard with the Neiko tool on the bench, let alone in situ.

Anyway, although I have not tried the following trick yet, I have posted in forum in the past.
Hopefully someone will try and report back.
Let's say you heat the junction with propane torch (open the bleeder screw a bit to allow expanding brake fluid to escape) with NO success.

Now you had to cut the line and did the flare (which is a pain).

In order to avoid doing the flare, what if you use a fine dremel wheel and SURGICALLY cut along the RED line very very slowly, just enough to use a screwdriver to crack the nut a tiny bit to widen it and release the bolt (the bolt is on the metal line side).
You don't want to damage the bolt threads.
Once the nut side is split a bit, the bolt simply unscrews easily.

Here is a diagram to illustrate my idea, on the LEFT is stuck washer hose removed by dremel.
On the RIGHT is my idea of using dremel.
BTW, the small slit you cut into the mounting bracket has no consequence, the new brake hose simply slides through the bracket's round hole.

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Volvo-Brake.png
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xHeart
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Re: 2001 V70XC - Brake line and Cliper Service

Post by xHeart » Tue Nov 12, 2019 12:43 pm

Thanks! Someone at MVS once quoted Vince Lombardi "Winners never quit and quitters never win".

Cutting along the metal nut on flex hose should work fine even if the flare gets little brushes. In my several attempts to use flare wrench the junction bracket moved, copper line twisted etc. But found there was ample copper material to refurb and flare.

Chose Neiko over OTC because it was available for next day delivery.


The flex hose and calipers were Volvo originals, +18 years/194k miles.
Once removed, the old passenger side caliper drained close to 10ml from the bleeder hole while on the bench, in prep for core return, where the driver's side caliper did not have any fluid come out of bleeder hole or the flex hose connection. Is this unusual, what failed? At times applying brake will turn the driver's wheel with less than firm grip on steering wheel.


--
Golden Retriever | 2014D VIDA DiCE | 2013A XC90 +144mi/231km | 2001 V70XC 1st Owner +196mi/ +315km | 1997 Volvo 850 NA 1st Owner +180mi/ +289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240

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abscate
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Re: 2001 V70XC - Brake line and Cliper Service

Post by abscate » Tue Nov 12, 2019 1:25 pm

times applying brake will turn the driver's wheel with less than firm grip on steering wheel.
A brake hydraulic problem will give you a big pull on the wheel, if it smaller, check your lower control arms and ball joints for play


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xHeart
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Re: 2001 V70XC - Brake line and Cliper Service

Post by xHeart » Wed Nov 13, 2019 8:57 am

Good to know.

Annoying slippery, without a shop towel it is impossible to turn the flare nut connecting to flex hose -- dripping stopped as it tightened. Close to 80-100ml dripped out at each bubble.

The brake line is now assembled down to front wheel caliper. The reservoir is now close to 200ml empty, what else to look out for during the refill, and bleed procedure?


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Re: 2001 V70XC - Brake line and Cliper Service

Post by abscate » Wed Nov 13, 2019 12:01 pm

Leave the fitting loose so you can blow some fluid out of it to get the detritus out. Keep that master reservoir full - you should push a whole liter through by the time you are done. Remember you can send it back to FCP if you bought it there, for credit.

Ive always found it easier to attach flares if both side can move - I often attach calipers to hoses holding both in my hands, twist the caliper on the hose to hand tight, then one nip on the wrench to seal the hose, for instance.


Empty Nester
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xHeart
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Re: 2001 V70XC - Brake line and Cliper Service

Post by xHeart » Sat Nov 16, 2019 7:35 am

I'm preparing to bleed brakes today, and looking for clarity as there are conflicting info on which wheel is first.

VIDA says to begin with wheel closest to the master cylinder, i.e., US driver's front-wheel a.k.a. left front-wheel, where experienced and popular brake bleed says to begin with the farther, i.e., passenger rear-right.

However, Anti-Locking ABS systems says to begin with closest to master cylinder -- same with Mityvac vacuum pump method.


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Golden Retriever | 2014D VIDA DiCE | 2013A XC90 +144mi/231km | 2001 V70XC 1st Owner +196mi/ +315km | 1997 Volvo 850 NA 1st Owner +180mi/ +289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240

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abscate
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abscate

Re: 2001 V70XC - Brake line and Cliper Service

Post by abscate » Sat Nov 16, 2019 1:16 pm

Less important than it used to be since with ABS and traction control all four wheels are hydraulically independent.

Just keep the reservoir full, check every 15-20 pumps and top off


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

xHeart
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Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 1997 854 NA
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Re: 2001 V70XC - Brake line and Cliper Service

Post by xHeart » Sat Nov 16, 2019 3:12 pm

Thank you. Mityvac method was a success. No visible fluid leak. Here is the junction after the surgery, and now in recovery -- test drive next.

MVS_Brakeline_0496.jpg
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--
Golden Retriever | 2014D VIDA DiCE | 2013A XC90 +144mi/231km | 2001 V70XC 1st Owner +196mi/ +315km | 1997 Volvo 850 NA 1st Owner +180mi/ +289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240

xHeart
Posts: 2525
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 1997 854 NA
Location: Great Lakes - USA
Has thanked: 18 times
Been thanked: 29 times
United States of America
xHeart

Re: 2001 V70XC - Brake line and Caliper Service  Topic is solved

Post by xHeart » Sat Nov 23, 2019 3:06 pm

Brake is working normally.
Only front brake lines used the bleed procedure, driver's wheel first.
cn90's trick on depressed pedal is a must when servicing brake lines. Cut off and re-flare is a best practice in my situation.


--
Golden Retriever | 2014D VIDA DiCE | 2013A XC90 +144mi/231km | 2001 V70XC 1st Owner +196mi/ +315km | 1997 Volvo 850 NA 1st Owner +180mi/ +289km
Past: German Shepherd | 1989 Volvo 740 GL | 1979 Volvo 240

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