[V8] Replacing Hydraulic pump - How?

[Kneale Brownson]

The manual's description of pump removal is in Section 48-20.   It calls
for removal of the pulley before extracting the pump. DasWolfen says it's
easier/faster to remove the pump with pulley intact by removing the left
timing belt cover.  I've only ever followed the manual procedure on the two
I've done so far, but I'm using Keith's message next time.

>From your description, I'd say you need to reseal the pump.    Sounds like
it's leaking from between the halves.  For all the trouble it is to extract
the pump, I'd want all new seals in there anyway, even if the only leak was
one of the mushroom caps on the front.  They all tend to get stiff.


At 08:29 PM 2/8/2005 -0800, Gunter Lorberg wrote:
>Anyone out there have experience replacing the hydraulic pump?
> 
>I think that I've had an 'on and off' problem for several months now.  
>However, it started leaking fairly heavily this past week on a road trip.   
>I was losing it at the rate of a quart every 30-40 miles.  The instrument 
>panel brake light stayed lit as well.  Couldn't tell if there was any less 
>braking power or increased steering effort, however.
> 
>The leak's origin(s) remains a bit of a mystery to me.   At first upon 
>cursory inspection it appeared to be coming from somewhere just to the right 
>of the banjo bolt feeding the high pressure line to the bomb.  There was a 
>tiny yet forceful stream of the green fluid shooting out from that area.  
> 
>The car was parked for a few days.  Cleaned up the area to have a better 
>look and restarted it.  Almost immediately there was a leak.  It was 
>dripping at the rate of about two drops/second on to the ground.  But, there 
>was now no leakage anywhere from the top half of the pump as viewed from 
>above.  Best as I can tell the leak was coming from the anterior end of the 
>pump.  I suspect that it's a front seal on the pump but I've never had one 
>out to have had a look at it.
> 
>Never mind.  The hoses look fine and the seals appeared to be intact on the 
>banjo bolts upon disassembly.  The pump needs to be changed.  Car has 160 
>000 miles on it.
> 
>It couldn't find the pages in the manual outlining how one removes the pump. 
> I started by removing the banjo bolts and the lines no problem.  I then 
>removed the accessory belt.  I decided to stop there to find out how do to 
>do this job from someone who has had experience.  I want to do it the 
>easiest way possible...there's not too much room to move around.
> 
>Do I have to remove the pulley before I can pull it out?
> 
>Do I have to remove the AC compressor?
> 
>What about the bracket?  There are two higher bolts with large allen heads 
>that form part of the mounting bracket.  What is to be done, if anything 
>with them?
> 
>Any advice on how to do this job as painlessly as possible would be greatly 
>appreciated.
> 
>Thanks,
> 
>Gunter
>(2) Canadian 1990 V8s
>
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