The RF caliper did not lock up previously. Pads were worn half way
and heavy glaze. Replaced pads, and booster. Did not change the MC,
it works on the bench when I bled it. Hoses are least 15 years old.
Will replace all hoses this week.
Bench bleeding did help – at least have a firm pedal.
thanks for the feedback
From: diesel_mercedes@yahoogroups.com [mailto:diesel_mercedes@yahoogroups.com] On Behalf Of Aleph93
Sent: Sunday, March 30, 2014 7:57 AM
To: diesel_mercedes@yahoogroups.com
Subject: Re: [diesel_mercedes] 220 115 master cylinder help
Was the RF caliper locking up before? (pulling to one side, wearing
faster, glazing the rotor)
Is that the same one that no fluid comes out of?
Is the Master cylinder new?
Try the old method of someone stepping on the pedal.
While bleeding my wife's Volvo, one of the bleeder valves wouldn't bleed
with the pressure bleeder, yet did so with the old method.
Volvo's are weird, there are 2 lines going to each front caliper, one
just for the front brake, and another that also connects to one of the
rear brakes, so if one line broke you'd still have both front brakes.
Extra safe, yet more time to bleed.
Rob
'85 300D
Garden Grove, CA
On 3/30/14, 3:16 AM, diesel_mercedes@yahoogroups.com wrote:
> 220 115 master cylinder help
> Posted by: "WARREN ATWOOD"menlotrail@yahoo.com menlotrail
> Date: Sat Mar 29, 2014 9:20 pm ((PDT))
>
> Replaced the brake booster and front pads.
> Bench bled the master cylinder
>
> Problems bleeding the system. Using a Actron vacuum brake bleeder, and cannot get all the air out.
> No brake fluid coming out of the front brake calipers.
> RF caliper locks up.
> Is there a residual valve in the system? Traced the lines and did not see one.
>
> Any thoughts on what could be the problem ?
>
> Many thanks,
> warren
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