[V8] Hydraulic system leakage

[Kneale Brownson]

I've only ever had a catastrophic leak (drain the reservoir in a two-mile
drive) from a pump itself.  The symptoms you describe of a gradually
increasing leak to the present could be any point in the system.  But the
hose leaks I've had (high pressure line to rack and supply line from pump)
were relatively gradual.  That is, they'd leak a liter in 4-500 miles.
I've resealed at least half a dozen pumps so far.  Three had gradual leaks
from the mushroom caps and a couple from the seals between the two halves
of the pump body.  The catastrophic leak was from between the two halves.
Whenever I "do" a pump, I replace all the O rings and the front seal around
the shaft now.  

At 09:05 PM 12/1/2004 -0800, Gunter Lorberg wrote:
>Question:  Where are the common hydraulic system leaks, especially those 
>coming from the the region of the pump itself?  What is a normal pattern of 
>pump failure?
> 
>Well, the V8 has developed a hydraulic system leak.  I don't know exactly 
>how fast it's leaking but a puddle of the fluid about half a foot in 
>diameter collects on the floor after even a short 2 mile drive.  The 
>reservoir is emptying itself more quickly (maybe a quart of more with every 
>gas fill-up), and the pace is picking up.  The source is definitely coming 
>from the area where the pump is.  I haven't had a chance to clean the region 
>to pinpoint the leak.  Car does not drive any differently (but I haven't run 
>dry yet ).  One of the main high pressure hoses was replaced over a year ago 
>with a factory original by previous owner.  The system has really not leaked 
>significantly all year up until now.
> 
>I thought that I'd poll the list to find out where the common leaks are.  
>ALLDATA is of no help.  There is not even a schematic of the pump available 
>on line and I don't have a manual....sure would love to have one, though.
> 
>Gunter
>Ontario, Canada
>1990 V8 red 155 000
>1990 V8 black 130 000 (recent acquisition)
>
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