Home » Public Forums » GMCnet » [GMCnet] PS Pump Leaks
| Re: [GMCnet] PS Pump Leaks [message #326500 is a reply to message #326495] |
Wed, 29 November 2017 20:26   |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma:
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Senior Member |
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Ahhh, Ken
"Shortly to be disabled for a while..." Have I not been keeping up or did
this little item slip your mind??
Mike
On Wed, Nov 29, 2017 at 8:58 PM, Ken Henderson
wrote:
> For months, I've been plagued by Power Steering Pump leaks. Every time I
> get back on the rack, the bottom of the PSP, its 3 hoses, the front
> crossmember and everything below it was covered with PS fluid.
>
> Since I'll shortly be disabled for a while, I decided yesterday that I'd
> fix it. Had a heck of a time getting the thing off. I'd re-tightened the
> big nut on the back and teh outlet hose that connects to it so many times,
> and so tightly, that I litterally could not get them loose. The big nut is
> so thing that the 1" open end wrench on it prevented the 5/8" flare nut
> wrench from getting a good grip. Plus, I couldn't get the room to extend
> the flare wrench for leverage.
>
> I finally had to disconnect the two return hoses (1 for PS, the other for
> Hydroboost) and lower the PSP onto the front cross member. There, I was
> finally able to use the 1" wrench and the wonderful flare nut Vice-Grips
> (THANKS Matt) to get a good grip on things. WIth a piece of pipe on the
> Vice-Grips, I was finally able to break the joint loose and remove the
> PSP. Probably didn't spill over a pint of fluid during the whole
> exercise. :-(
>
> As soon as I got the reservoir off (a simple matter, after the bolts are
> all removed, of tapping around the pulley side with a plastic hammer), I
> saw the problem: There are 3 O-rings sealing two 3/8" bolts and the one
> outlet fitting nut. They fit into recesses in the body of the pump, with
> the sheet metal reservoir rear surface pressed against them by the
> fasteners. That's ALL that prevents leaks from back there. All 3 O-rings
> were badly mangled, misaligned so badly that they were squooshed outside of
> their recesses. The BIG O-ring between the mail pump body and the
> reservoir's round housing, was in great shape.
>
> All 3 of the fastener holes in the back of the reservoir were badly
> dimpled, probably because I'd tried at some time to fix leaks by
> overtightening them. So, using a very smooth anvil and a smooth ball pein,
> I smoothed the areas around the holes.
>
> I finally found the proper sized O-rings in my box. This time, for the
> first time ever, I used my head a little bit in reinstalling the
> reservoir: Usually, I just aim it in the right direction, then shove and
> drive it home. When the holes don't quite line up, I just twist the
> reservoir until they do. THAT is probably what caused the damaged
> O-rings. This time, I used a couple of 3/8"-16x3" studs, made from
> all-thread, in the two bolt holes as guides for the reservoir as I
> installed it. When I removed the studs, there was no need to rotate the
> housing and dislodge the O-rings.
>
> With everything bolted back up, re-installed, and re-filled, I jacked the
> front wheels off the ground and fired up the engine. After a few full lock
> L & R turns of the steering wheel, the boost had obviously returned. AND,
> my Hydroboosted hydraulic line pressure increased by a couple of hundred
> psi. I'm not sure why, because all air should have been evacuated during
> the past 20,000+ miles, but it did.
>
> After a couple of engine runs, and sitting overnight, today the reservoir
> and surroundings are still dry. Y'All keep your fingers crossed that I've
> finally licked this one. Even if I haven't cured the AFT leak. :-(
>
> Ken H.
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--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
Life is too short to hold a grudge; slash some tires and call it even !
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