Brake issue
#1
Brake issue
I have a 2004 DII, brakes are fine overall, a bit mushy but not seriously so.
There does seem to be some leakage (very minor) from the Reservoir. Maybe a cape full in 500 km.
However last evening my pedal went to the floor, the Disco stopped but still nerve racking - I was just out of my driveway. Next press pedal was fine, slow 15 minute drive around the block no issues.
Tried the press pedal test pedal stayed firm.
Having just gone through this with my previous vehicle - I suspect the master cylinder is going.
Any good tests to get a definitive answer ?
There does seem to be some leakage (very minor) from the Reservoir. Maybe a cape full in 500 km.
However last evening my pedal went to the floor, the Disco stopped but still nerve racking - I was just out of my driveway. Next press pedal was fine, slow 15 minute drive around the block no issues.
Tried the press pedal test pedal stayed firm.
Having just gone through this with my previous vehicle - I suspect the master cylinder is going.
Any good tests to get a definitive answer ?
#2
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Richard Gallant (12-12-2017)
#5
Join Date: Oct 2016
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Replace the master cylinder, both of mine were bad. Same symptoms, no pedal and then firmer with each push. If the fluid never got extremely low, no air should have entered the system. Start hitting the bleeder screws with WD40 now, since bench bleeding the master will only get you so far...better to bleed entire system once replaced.
Brian.
Brian.
#6
Re-checked the pedal and it is solid.
I expected a pedal drop again it did not. But having said that I have not had a chance to crawl around underneath and check all the lines.
That is a weekend job.
Are the bleeders a standard size on these ?
#7
The bleed screws are M10 X 1.0 X (30 - 35mm).
NEW OE part #: LR015523 OLD #: RTC1115
OR from RA or an auto parts store something like...
> More Information for DORMAN 484151
> More Information for DORMAN 12706
NEW OE part #: LR015523 OLD #: RTC1115
OR from RA or an auto parts store something like...
> More Information for DORMAN 484151
> More Information for DORMAN 12706
The following users liked this post:
Richard Gallant (12-12-2017)
#8
A couple quick tips
Get a turkey baster and suck out all the old fluid from the reservoir prior to adding new fluid for the bleeding. This way you are not bleeding with old fluid.
Put the truck on jack stands and after your third go around bleeding, start truck and let it run in downhill decent assistance to help get out the old fluid and bubble prior to the final bleed.
Get a turkey baster and suck out all the old fluid from the reservoir prior to adding new fluid for the bleeding. This way you are not bleeding with old fluid.
Put the truck on jack stands and after your third go around bleeding, start truck and let it run in downhill decent assistance to help get out the old fluid and bubble prior to the final bleed.