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1988 M.B. SL560, 1995 Dodge Neon Sport, 1991Ford F-150 300 6cyl.
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3 Posts
Discussion Starter #1
OK so I've replaced the calipers on the front. The passenger side bleed off no problem but when i tried to bleed the driver side i got no fluid and lost all pedal pressure the car is an 88' Sl560, and I've followed proper procedures, researched the job before i even started. Any help would be much appreciated. :crybaby2:
 

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Outstanding Contributor
450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
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Probably not helpful, but maybe, just maybe you have the valve too wide open and air is getting sucked back in through the valve in the caliper.

And the obvious: is the reservoir still full?
 

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Depends on the day!
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caliper or bleeder is likely clogged...take the bleeder out, make sure it's Clean.. while the bleeder is out, fire up the car, throw a rag over the caliper and pump up the brakes.. if that won't clear it you'll have to pull the caliper off and rebuild/clean it.

Jonathan
 

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1988 M.B. SL560, 1995 Dodge Neon Sport, 1991Ford F-150 300 6cyl.
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Discussion Starter #4
Calipers are new/rebuilt units with new bleeder screws. Could the abs unit be full of sludge?
 

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1984 380SL, 1991 300E
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I had the same symptom on one of my rear calipers and it was due to a clog within the caliper. I rebuilt mine and flushed it to clear the problem. Seeing as yours is a new/rebuilt unit I would start by disconnecting the flex line from the caliper and seeing if you have fluid to the end of the flex. It's not beyond the realm of possibility that a rebuilt has some crystallized fluid within.
 

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Always Remembered RIP
1979 280sl 4 sp w/ac 1957 MGA 1998 volvo xc/70 2004 F150
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I believe you are supposed to have the key in the on position (power to ABS unit) to bleed the brakes.
 

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450slc5.0cab 280sl5sp 280se4.5 500se+500slAMG +250seStkW108 350sl4spdX3 500secEuro
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Can you tell if air is coming out of the bleeder valve? If not, then i would think the correct approach would be to work backwards to find the clog or leak in the system.
- disconnect the bleeder valve nut
- disconnect the caliper
- disconnect the hose

Right?
 

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If you have no pressure @ the calipers then I'd suspect the master cylinder.

Have you remove the brake hoses @ the line..see if you have pressure there? Basically keep going up stream till you find the blockage/stopping point.

Jonathan
 

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1988 M.B. SL560, 1995 Dodge Neon Sport, 1991Ford F-150 300 6cyl.
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Discussion Starter #9
If you have no pressure @ the calipers then I'd suspect the master cylinder.

Have you remove the brake hoses @ the line..see if you have pressure there? Basically keep going up stream till you find the blockage/stopping point.

Jonathan
Master cylinder is good cause the only place i'm not getting fluid from now is the front driver side caliper but i've still got now pedal pressure.

Fonzi i think im going to try your approach now work my way backwards till i find some fluid.
 

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R/C107 Moderator
1986 560SL: '84 500SL: '84 280SL 5 speed: other 107s
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1. You have a 1988 560SL not a 1988 SL560

2. How are you bleeding the brakes?
 
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