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View Full Version : My Power Steering pump is leaking bad...


Overlander
07-09-2012, 12:35 PM
I'm heading for a rebuild of my P/S pump on my '95 FZJ80 - got a big stain in my driveway to prove it.

How difficult is this job? I know I can order a rebuild kit from IH8MUD.com but I wonder if the pump alone is what I should be replacing or if the hoses (low pressure/high pressure) should also be replaced in the process? The full set of parts that Beno on Mud had quoted me totaled around $250!

Thx - James

MountainGoat
07-09-2012, 01:33 PM
Are you sure the pump is leaking, or could it be a hose?

I blew a low pressure ps return line 2 years ago on Yankee Hill and replaced it with a piece of fire extinguisher hose. :hill: When I went back in to do a proper fix, last year (!) I noticed another low pressure ps return line that was petrified, similar to the one that blew. Both hoses felt like they were made of pvc, they were so hard. Those 80 series engine bays are like a pizza oven man.

You might check these before you worry about a full pump rebuild. It helps if you pull the battery and tray for access. You can buy the line fairly cheap at any auto supply store. :thumb:

Overlander
07-09-2012, 01:59 PM
...replaced it with a piece of fire extinguisher hose. :hill:

Heheh - good one. I see what you mean - need to do a deep dive under there... it's ugly though. May need to do a carwash to get rid of the gunk so I can see something other than the oil and grime.

Thx -

Snowrun
07-09-2012, 03:04 PM
I am with Dan. I have seen that low pressure line cause leaks twice. If it does turn out to be a PS pump issue I would just buy a new one and forego the rebuild.

60wag
07-09-2012, 05:01 PM
The leak on mine was the o ring that seals the back cover on the pump. No need for a full rebuild.

Overlander
07-09-2012, 08:27 PM
The leak on mine was the o ring that seals the back cover on the pump. No need for a full rebuild.

So you just bought the single O-ring? I guess finding it is the key... trouble is that it's not easy.

coax
07-09-2012, 09:24 PM
If you're in there you might as well do it all. The pump rebuild kit is not expensive. High pressure hose is pricey but some have used the napa with good results. 2 low pressure lines are cheap and easy when doing the rest. Good luck!

Inukshuk
07-09-2012, 10:37 PM
The rebuild is very easy and I have a spare pump. Having done the rebuild I assure you that its very unlikely the metal parts of the pump are bad. Come by with the o-ring kit we can rebuild my spare (off of a 170,000 mile 1994 1FZ-FE) in 30 minutes (taking our time) and then you can take it and swap it out and bring me yours later. Why you should do the entire rebuild if you are pulling the pump is that leaky internal seals allow different chambers to mix and reduce the strength of the pump. At worst you will have cavitation which can result in total pressure loss (ask me how I know) and that can lead to metal damage.

Only thing I do not have is a impact gun to R&R the gear nut and a puller to get the gear off. Bring those and we are set. If not I can do what I did last time and go to Treeroots to pull it (this time I'll wear gloves!)

Hoses are good to replace anyway, and all but the high pressure line are regular hose you can buy in bulk inexpensively. I have had good luck with the Gates high pressure line but it was not a perfect seal at the gearbox at first.

The PS pump writeup by Romer on mud is spot on. The trick to getting the lines off the gearbox is to go in via the wheel well. I have flare wrenches too.

After re-installation you will want to bleed the air from the system using the proper technique. Not difficult, just uncommon.

Short term Lucas Stop Leak really works and I still have half a bottle you can have. I'm in Sloan's lake.

TIMZTOY
07-11-2012, 10:06 AM
If your low pressure lines keep poping off or simmilar. Then there is another issue. That needs to be addressed.
If the low side keeps leaking or poping off there is a restriction in the Low side. Most likely the pump. But could be restriction at the resivor it self. the cap, expect happy if the cap is spring loaded. Or worst case senerio the gear box.
I'd see how much for a new or reman pump That's typically a lot easier. I don't think I rebuilt but only one pump because it's cheaper to just replace it.
But that's a shop. Because the time to rebuild it + parts kit is more expensive than just swapping pumps.
But if your time is free to you then it's cheaper to rebuild.
But it May still be bad even after rebuilding it.

Overlander
07-13-2012, 09:42 AM
Come by with the o-ring kit we can rebuild my spare (off of a 170,000 mile 1994 1FZ-FE) in 30 minutes (taking our time) and then you can take it and swap it out and bring me yours later... I'm in Sloan's lake.

Thanks - I may need some help with that, so thanks for the offer. I'm in Westminster (112th and Federal), so you're pretty close.

Inukshuk
07-13-2012, 11:10 PM
Thanks - I may need some help with that, so thanks for the offer. I'm in Westminster (112th and Federal), so you're pretty close.

:thumb:

Overlander
07-24-2012, 10:17 PM
Ok - confirmed that it's leaking from the very back of the P/S housing... Where is a good reasonable place to buy a P/S rebuild kit from? Here is what Beno (on MUD) had quoted me:

PS pump rebuild: List: $59.53//MUD: $44.65

Block oring: List: $3.85//mud: $2.89

High pressure gasket: List: $2.79//mud: $2.09

Return hose: List: $31.72//mud: $23.79

High pressure hose: List: $256.41//mud: $192.31

powderpig
07-25-2012, 08:27 AM
Napa has has the HP hose for about 60, it is made in Mexico, appears to be high quality, fitting are good, uses a 16mm wrench on the box. I usually change over the mount bracket from the old hose. Mine is several years old with out issue. Toyota's hose is way over priced(IMHO).
Have you looked at the price of a new pump(about 250), the only thing you need to change is the drive gear then. Never use a device like pliers to hold the gear at the teeth, it will create problems like noise when installed into the truck. I usually just use my impact gun to remove and install the nut while I hole the gear with my leather glove. I have rebuilt many of these, you will also need a new bearing Toyota does not sell. The best place is to get it from a bearing company(about 12-13 dollars), other wise most aftermarket parts houses will sell you a chinese bearing.

Return hose can be just Transmission return hose for 6-7 dollars. Just as good, just not Toyota. You will need some new hose clamps as well.

Some times getting into the pump will create more problems, but it is a good experience and educational.

Overlander
07-26-2012, 09:28 AM
Anybody get their P/S kits from anyplace other than MUD?

coax
07-26-2012, 10:10 AM
I got my high pressure hose from Napa, and the pump rebuild kit from rock auto. It was a gates kit and seems to be working fine. Comes with engine block o ring but no bearing.

nuclearlemon
07-26-2012, 10:59 AM
I got my high pressure hose from Napa, and the pump rebuild kit from rock auto. It was a gates kit and seems to be working fine. Comes with engine block o ring but no bearing.

same here. two rock auto kits, one pump works awesome, other pump, i didn't mike the vanes and the pumpwasn't working well, still have to tear it down to find out if that's the issue.

i'll ditto the napa hose also. have had it for a couple years, it's damp, but that may be a reservoir leak (have had issues with cap gasket).

powderpig
07-26-2012, 03:56 PM
Nachi Bearing number 6203 zze (letters after indicate stainless steel covers instead of a syn material).
Whisler bearing com in Denver, I ordered 8 at one time, got them for 14.25 per bearing. 303-377-3444

Overlander
07-27-2012, 02:21 PM
Fabulous info - thanks guys!

Inukshuk
08-13-2012, 12:48 PM
Work scheduled: Wednesday the 15th, 7PM, my garage. All welcome. See your member roster for my address.

Inukshuk
08-14-2012, 09:22 PM
EDIT: I just got word a deal is back on to close ASAP. I may need to hold the evening open and will know better Wednesday afternoon. PM sent

Overlander
08-16-2012, 10:03 AM
Daniel and I got the pump rebuilt last night: 1.5hrs + 4 beers + pleasant conversation... very rewarding to have it done.

The kit from Rock Auto included all seals except for one: the little one that goes around the banjo bolt was not in the kit. I'll need to go to NAPA to find a replacement for it, plus the return hoses and I'll be ready for re-assembly.

Thanks very much Daniel - appreciate your help.

Inukshuk
08-17-2012, 12:46 AM
Daniel and I got the pump rebuilt last night: 1.5hrs + 4 beers + pleasant conversation... very rewarding to have it done.

The kit from Rock Auto included all seals except for one: the little one that goes around the banjo bolt was not in the kit. I'll need to go to NAPA to find a replacement for it, plus the return hoses and I'll be ready for re-assembly.

Thanks very much Daniel - appreciate your help.

:thumb: Great to meet you James and pay it forward. Glad we got you rebuilt and hope we inspire others. Its really quite easy, even if a few vanes fall out. Wear side faces clockwise and is farther from the center. Amazing how little wear there is after so many miles.

Overlander
08-27-2012, 04:24 PM
I've successfully completed the re-assembly following the rebuild. It was all well for a while but now I have another LEAK! Not on the pump this time - the bloody leak starts right where the supply hose leaves the bottom of the reservoir and feeds fluid down to the top of the pump. I can't tell if it's right at the host or above - could it be that I have a crack in the fluid reservoir?!

Seeing a puddle forming again under my cruiser brings tears to my eyes.. . :(

Inukshuk
08-28-2012, 12:47 AM
Is it a new hose? Unlikely to be the reservoir but I have a spare.

Overlander
08-28-2012, 11:02 AM
Is it a new hose? Unlikely to be the reservoir but I have a spare.

Daniel - it's a brand new Gates hose and a brand new clamp... :( If you have a spare I'll buy it off of ya. BTW - I may be in the are tonight or tomorrow, so I could pop over and return the wrench too.

Another thing: is it likely that I may need a constant-tension clamp on there, since it gets hot/cold/hot in there?

Hulk
09-13-2012, 09:43 PM
I got my high pressure hose from Napa, and the pump rebuild kit from rock auto. It was a gates kit and seems to be working fine. Comes with engine block o ring but no bearing.

Did you just order the high pressure hose for an 80 series from Napa? Or was it a different hose that was a similar fit?

corsair23
09-14-2012, 12:16 PM
Did you just order the high pressure hose for an 80 series from Napa? Or was it a different hose that was a similar fit?

I took Roobie's advice and bought the one from Napa...I looked it up online and took the printout with the part # into the Napa on County Line and Holly. They had one in stock :thumb: