I seem to be doing a lot of PS pumps lately. Had to replace one on the family truckster a few weeks ago, and now the old Mazda needs a pump as well. My problem is that the truck is so old and rare (these days) that they are no longer available. I searched Rock Auto and they will only do a rebuild if you send them the old pump -- they have no remanned parts on the shelf. ---- "Ain't nobody got time for that!!"
The noise in the pump was definitely a bearing. So I took a chance and removed the pump to see if the local parts store would have a bearing in stock. It was a good bet. The local NAPA matched me up a bearing for $20. I probably could have saved a few bucks if I went on ebay and matched it, but then I'd have to wait.
Before starting, I put a plug over the valve assembly bore to ensure that parts didn't drop out (this is a complex valve system with many small parts and check balls) -- so I just plugged it up to ensure the parts stay put.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0756%20Medium.jpg)
The pulley was stuck tight after all these years, and it needed a lot of heat and some Kroil to get loose.....
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0757%20Medium.jpg)
... while the bracket bolts also needed some heat
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0758%20Medium.jpg)
Everything finally came apart ..
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0759%20Medium.jpg)
There is a snap ring in the top to hold in the bearing, and once it's removed, a quick blow with a brass hammer from the back released the assembly.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0760%20Medium.jpg)
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0761%20Medium.jpg)
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0762%20Medium.jpg)
The shaft popped out and the bearing was definitely rough.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0763%20Medium.jpg)
Everything apart and ready for cleaning and reassembly.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0764%20Medium.jpg)
The bearing is easily driven off the shaft with a brass hammer
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0765%20Medium.jpg)
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0766%20Medium.jpg)
The new bearing was pressed on the shaft using a socket to drive it on the shaft and the old seal and spacer were reused for installation back into the housing.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0767%20Medium.jpg)
A socket was used to drive it home and reinstall the retainer clip.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0768%20Medium.jpg)
Everything was reinstalled and the shaft was tight --
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0769%20Medium_5.jpg)
Good to go!
Put everything back on the truck and went for a drive .....and promptly lost my power steering. The trek was a lot of fun and we went through several muddy trails and creeks just having a good time. The truck was working well, but it did get a few dings and dents along the rocker line. No problem though -- it's a beater old truck with a home brew paint job, and I'm not worried about it.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0698%20Medium.jpg)
I started having PS problems toward the end of the run and I noticed increased noise. Long story short I got it home expecting to R&R the PS pump again, but after further inspection it turned out to be a corroded PS line.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0697%20Medium.jpg)
The PS lines are rubber sleeved at two points across the front cross member, and under those sleeves rust and corrosion eat away at the lines. This line has a pinhole leak.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0699%20Medium.jpg)
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0700%20Medium.jpg)
To make matter worse, while taking off the 10mm bracket bolt, my 10mm SK 1/4" drive socket bit the dust.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0701%20Medium.jpg)
The line was toast so I cut it with a body saw and split it to add a piece of high pressure hose. It's a Rube Goldberg fix, but you just can't get these lines anymore from a local supplier. They are very hard to come by and until a find a new set, the high pressure hose fix will have to do.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0702%20Medium.jpg)
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0703%20Medium.jpg)
I eliminated the rusted holding brackets and spliced in a piece of 5/16" hydraulic hose. It will do until I can track down a set of new lines for this old warhorse.
(http://i357.photobucket.com/albums/oo18/goodfellow_2004/B2600/PICT0704%20Medium.jpg)
I refilled and bled the system and it works pretty well. At least this way I can go back out on the trail over the coming holiday weekend.