Power Steering Pump - Rebuild or replace?

[MNC]

Ok so on the first shake down trip I've blown the power steering pump (power steering fluid pumps out around the front shaft by the pulley).

I noticed a pretty loud wining noise before heading out even on light turning duties.

I need a set up that can cope with 40" rubber and a front locker = heaps of pressure on steering (i could hardy turn wheel with front locker in and no PS ).

I think the pump is out of a 70 series landcruiser (pump and reservoir in one unit) and my bro-in law made up the bracket to fit so I would prefer not to replace it if possible.



That said my question is - should I get the existing pump rebuilt? and if so will it be up to the task? or should i replace? and if so with what?

Cheers,

[niblik]

i took my pump apart as had a leak from around the front pulley shaft too...

took seals in to a seal hydraulic styles place, got new seals for the entire pump for $8 or so and rebuilt it myself... still goes great..

do it man..

[SamLogan]

what about something like this. http://www.snr4x4.co.nz/rock-assault-pump-p-22.html

Sam

[MNC]

i took my pump apart as had a leak from around the front pulley shaft too...

took seals in to a seal hydraulic styles place, got new seals for the entire pump for $8 or so and rebuilt it myself... still goes great..

do it man..

I had wondered if it would have been just old dry seals...

So you've had no problems since?

Do you remeber the name of the place you went to? Someone like Hose Doctor or Enzed? rather than Toyota?

[niblik]

So you've had no problems since?

none whatsoever.. its been mint..

Do you remeber the name of the place you went to?

i just looked back through my little black book of notes, it was SIL aka seal imports ltd. just make sure you let them know what the seals will be goin in and take em all as samples to measure off etc.. even the pieces that the seals will be running on.. you'll see when ya pull er down..

good luck..

[ClassicCruiserSpares]

I agree with nibby i done the same to mine, just make sure you take the bits with you into seal imports so they can measure the parts were the seals go, to make sure you get the rite ones. The pumps are very simple to work on also.

[tomsoffroad]

Cool cheers fellas. I have to do my ladies car pump too

[MNC]

what about something like this. http://www.snr4x4.co.nz/rock-assault-pump-p-22.html

Sam

Dude, that's $460 vs $8 seals. Thanks for the link though.

My preference is to stick with current set up if its going to be up to the job (no more modding required that way).

[MNC]

So you've had no problems since?

none whatsoever.. its been mint..

Do you remeber the name of the place you went to?

i just looked back through my little black book of notes, it was SIL aka seal imports ltd. just make sure you let them know what the seals will be goin in and take em all as samples to measure off etc.. even the pieces that the seals will be running on.. you'll see when ya pull er down..

good luck..

I agree with nibby i done the same to mine, just make sure you take the bits with you into seal imports so they can measure the parts were the seals go, to make sure you get the rite ones. The pumps are very simple to work on also.

OK, so pump is now out of truck and I'm going to strip it down.

Looks like I'll be paying these guys a visit:

http://www.sealimports.co.nz/index.html

Cheers guys.

[ClassicCruiserSpares]

When you take them apart make sure you do it carefully theres alot of springs in them and if you rip into it they will spring out and you may loose some.

[MNC]

When you take them apart make sure you do it carefully theres alot of springs in them and if you rip into it they will spring out and you may loose some.

Cheers dude,

[smurf182]

Maybe a power steering fluid cooler?

I've seen some track cars with these but im sure the concepts the same for an off roader?

[MNC]

Maybe a power steering fluid cooler?

I've seen some track cars with these but im sure the concepts the same for an off roader?

If you check out the photo I've posted above you can see an oil cooler mounted on the radiator shroud. That is my power steering fluid cooler.

No fan on it but the front of the shroud is cut out in front of it and the main fan seams to suck a bit of air through.

[pruggerdore]

On a side note is there anyway to increase the power output of pumps simply like drilling out a restrictor hole or something. I'm running hilux ifs box and v6 commy pump and wonder if there is any way to get stronger steering?

[Sadam_Husain]

On a side note is there anyway to increase the power output of pumps simply like drilling out a restrictor hole or something. I'm running hilux ifs box and v6 commy pump and wonder if there is any way to get stronger steering?

I've always been told you can go out 1 drill size on chev p/s pumps so I guess that'll probably go for most p/s pumps, Beer Cruiser did it on his truck but he still cant pull his pitball tyres around properly, Bundy down here reckons hes going to try a mitzy truck pump or something like that on one of his cruisers so that might be worth looking at for increased flow/volume/pressure?

[niblik]

could also either upgrade springs on inner pump for the vanes or increase the spring rating on the pressure relief valve for the pump..

[MNC]

... The pumps are very simple to work on also.

Dude, all I can say is I'm not looking forward to trying to get all those springs back into place....

OK, for those who are interested and love a good pic fest here goes,

Pump out:


Front of pump off, shaft and spring out:


The warning about the springs.... well this pump has 24 of them :


I'm a bit concerned about the wear on the inner sleeve and shaft - anyone does this look like an issue to you?:




Anyhow, the infringing $8 seal (that has already cost me more than that in lost power steering fluid!!!:


And just to give you an idea of most the parts together:


I'll replace the O Rings at the same time - might as well while I have it apart.

[niblik]

take everything in fella. i meant $8 was for all the seals including the worn bush you've pictured too..

and puttin back together is easier than ya think..

[MNC]

take everything in fella. i meant $8 was for all the seals including the worn bush you've pictured too..

and puttin back together is easier than ya think..

Sweet, so the same place sells replacement bushes?

I had a go at putting one bank of springs back in - it didn't go well Couple of beers and a bit of patience and I'm sure it will be fine

[niblik]

so the same place sells replacement bushes?

yup yup.. yeah, put the plate for springs on shaft, springs on, top plate on, crush lightly and slide in, tapping gently.. repeat..

[MNC]

... The pumps are very simple to work on also.

I'm a bit concerned about the wear on the inner sleeve and shaft - anyone does this look like an issue to you?:

I'm having trouble getting those bushes out - Looks like they would need to be pressed out and the new ones pressed in.

Can anyone recommend a place in the north Auckland area to do this?

Cheers,

[ClassicCruiserSpares]

... The pumps are very simple to work on also.

I'm a bit concerned about the wear on the inner sleeve and shaft - anyone does this look like an issue to you?:

I'm having trouble getting those bushes out - Looks like they would need to be pressed out and the new ones pressed in.

Can anyone recommend a place in the north Auckland area to do this?

Cheers,

I took that cap off the back then used a socket the same size as the bush to knock the bush out.

[MNC]

I'm having trouble getting those bushes out - Looks like they would need to be pressed out and the new ones pressed in.

Can anyone recommend a place in the north Auckland area to do this?

Cheers,

I took that cap off the back then used a socket the same size as the bush to knock the bush out.

Cheers dude, I'll give that a go

[MNC]

Second trip out and second blown seal on the PS pump (one around the front output shaft that runs to the pulley again)

I'm wondering if the gearing is wrong (custom set up - engine speed/pulley/pump are from different trucks)? Or I need to drill out the restrictor hole, or fit a light commercial truck ps pump???

Any suggestions (such as the below) or what you've tried would be appreciated - cheers,

On a side note is there anyway to increase the power output of pumps simply like drilling out a restrictor hole or something. I'm running hilux ifs box and v6 commy pump and wonder if there is any way to get stronger steering?

I've always been told you can go out 1 drill size on chev p/s pumps so I guess that'll probably go for most p/s pumps, Beer Cruiser did it on his truck but he still cant pull his pitball tyres around properly, Bundy down here reckons hes going to try a mitzy truck pump or something like that on one of his cruisers so that might be worth looking at for increased flow/volume/pressure?

[Pedro]

Second trip out and second blown seal on the PS pump (one around the front output shaft that runs to the pulley again)

I'm wondering if the gearing is wrong (custom set up - engine speed/pulley/pump are from different trucks)? Or I need to drill out the restrictor hole, or fit a light commercial truck ps pump???

Any suggestions (such as the below) or what you've tried would be appreciated - cheers,

On a side note is there anyway to increase the power output of pumps simply like drilling out a restrictor hole or something. I'm running hilux ifs box and v6 commy pump and wonder if there is any way to get stronger steering?

I've always been told you can go out 1 drill size on chev p/s pumps so I guess that'll probably go for most p/s pumps, Beer Cruiser did it on his truck but he still cant pull his pitball tyres around properly, Bundy down here reckons hes going to try a mitzy truck pump or something like that on one of his cruisers so that might be worth looking at for increased flow/volume/pressure?

did you replace the bushing in the front of the pump, one you showed was worn, also there should be a bleed hole to take the pressure off the seal, high pressure fluid can get to the seal via the bushing, the bleed hole lets the fluid return to the resevior or but if that bleed hole is blocked or partially obstructed then the pressure can force the seal out and leak,
i would be stripping the pump and try to determine where the pressure is coming from and the bleed is not restricted

cheers

pedro

[callum007]

I have one of those Trail Gear hydro pumps you can have for $160.. its my spare but I'll just import another if mine ever breaks. I just might even have spare hydro rams for you.... once you have hydro you wont look back. But I cant remember if this truck is road worthy..

[MNC]

I have one of those Trail Gear hydro pumps you can have for $160.. its my spare but I'll just import another if mine ever breaks. I just might even have spare hydro rams for you.... once you have hydro you wont look back. But I cant remember if this truck is road worthy..

She's not a road truck... Thats 2 x go hydro - its a strong contender. Would it suit the 60 series box?

[MNC]

did you replace the bushing in the front of the pump, one you showed was worn, also there should be a bleed hole to take the pressure off the seal, high pressure fluid can get to the seal via the bushing, the bleed hole lets the fluid return to the resevior or but if that bleed hole is blocked or partially obstructed then the pressure can force the seal out and leak,
i would be stripping the pump and try to determine where the pressure is coming from and the bleed is not restricted

cheers

pedro

Na, I replaced the rubber bits that were easy to take out and put new ones back in...

The pressure relieve valve should be giving out before the seals right? might send the pump in for a proper rebuild....

[Pedro]

did you replace the bushing in the front of the pump, one you showed was worn, also there should be a bleed hole to take the pressure off the seal, high pressure fluid can get to the seal via the bushing, the bleed hole lets the fluid return to the resevior or but if that bleed hole is blocked or partially obstructed then the pressure can force the seal out and leak,
i would be stripping the pump and try to determine where the pressure is coming from and the bleed is not restricted

cheers

pedro

Na, I replaced the rubber bits that were easy to take out and put new ones back in...

The pressure relieve valve should be giving out before the seals right? might send the pump in for a proper rebuild....

the seals should not see any pressure, hence the bleed hole, pump makes over a 1000psi, and little bit of rubber on the shaft seal aint gonna hold that back, it needs the bleed hole.

cheers

pedro

[MNC]

the seals should not see any pressure, hence the bleed hole, pump makes over a 1000psi, and little bit of rubber on the shaft seal aint gonna hold that back, it needs the bleed hole.

cheers

pedro

Yip, I'm sure you are 100% on the money... I obviously didn't fix this the first time and that's why its happened again. Cheers,