Author Topic: Hydro Assist:box and pump mods  (Read 232364 times)

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gnob

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Re: Hydro Assist:box and pump mods
« Reply #30 on: Apr 21, 2005, 05:53:44 PM »
i will reply.
i like this thread, as well as the cheap assist thread.
i looked at the site in the other thread, and when funds allow i will be going this route.
i cant wait for assit as a spooled front makes turning nearly impossible.

thanks for all the good info.
hold this. . .

alwayzbroken

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Re: Hydro Assist:box and pump mods
« Reply #31 on: Apr 24, 2005, 06:12:46 PM »
Very good thread. This will benefit many people including myself. I ordered all my stuff from the Surplus Center including spare fittings and a spare hose for trail spares. I ordered and was billed for 3 hoses and not one of them was in the box with the rest of the stuff  :shake: . I will have to call and get them shipped.
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guywithuglyyota

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Re: Hydro Assist:box and pump mods
« Reply #32 on: Apr 24, 2005, 07:15:06 PM »
Hey fred thanks for this postup! We need more of these on this thing. I didnt know this mod existed then I went to the Jambo this weekend and saw all kinds of guys running it, and it works very very well!
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mudguts

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Re: Hydro Assist:box and pump mods
« Reply #33 on: Apr 25, 2005, 07:59:27 PM »
This is an excellent thread, and I think it should be moved to the tech section.
Good job Brendan  :thumbs:
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freds40 [OP]

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Re: Hydro Assist:box and pump mods
« Reply #34 on: Apr 25, 2005, 08:11:57 PM »
Okay, I'll stop crying that nobody likes me now.  :haha:  :laugh:  Yeah I talked to Mike about moving it but in the tech section they are divided into years of trucks so there is no real place to put it. We decided (mainly because I didn't save the text) to just leave it where it is.  :yesnod:
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guywithuglyyota

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Re: Hydro Assist:box and pump mods
« Reply #35 on: Apr 25, 2005, 08:20:01 PM »
sounds like they need to make a new tech section to cover this type of thing. Lots of mods carry over from 1st gen to second to third... thats cool to keep it where it is but like most posts it may get burried over time, and harder to look up for reference purposes.
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freds40 [OP]

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Re: Hydro Assist:box and pump mods
« Reply #36 on: Apr 25, 2005, 08:24:03 PM »
That was my thought too. I was hoping there was a general section in tech but there is not. I couldn't see putting this with just 1 Generation of trucks.  :dunno:
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guywithuglyyota

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Re: Hydro Assist:box and pump mods
« Reply #37 on: Apr 25, 2005, 08:39:21 PM »
well im sure the moderators will read this post for there own trucks! And create a new section accordingly.
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Haz-matt

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Re: Hydro Assist:box and pump mods
« Reply #38 on: Apr 25, 2005, 10:55:59 PM »
Can I add this to the wheeling wikipedia that I'm working on?  Or you can add it yourself, the link is in my sig.
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freds40 [OP]

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Re: Hydro Assist:box and pump mods
« Reply #39 on: Apr 27, 2005, 02:28:31 PM »
Can I add this to the wheeling wikipedia that I'm working on?  Or you can add it yourself, the link is in my sig.

If you think some people will get some use out of it, go right ahead.  :thumbs:
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freds40 [OP]

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Re: Hydro Assist:box and pump mods
« Reply #40 on: Jul 08, 2005, 06:14:21 PM »
Figured I'd bring it back up for those who might be seeing a need for this mod now that the season is getting under way.  :driving:
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Willy Mammoth

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Re: Hydro Assist:box and pump mods
« Reply #41 on: Jul 08, 2005, 08:01:27 PM »
Does this same procedure work for a Scout box too?

BTW Nice write up :thumbs:
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Re: Hydro Assist:box and pump mods
« Reply #42 on: Jul 08, 2005, 08:12:06 PM »
Yes it does.  I supose it'd be nice if I showed ya how to port yer box huh? :greengrin:
Full hydro, 186:1 with an auto and 44's what could go wrong??

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Re: Hydro Assist:box and pump mods
« Reply #43 on: Jul 08, 2005, 08:18:44 PM »
Not to jack this thread or anything, but you could start another one and put a link here.
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Duffil

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Re: Hydro Assist:box and pump mods
« Reply #44 on: Jul 08, 2005, 08:24:41 PM »
could one simply drill the restrictor in the pump to boost line pressure for increased assist WITHOUT using the hydraulic ram, etc?  or would this blow the box out?  Obviously, it wouldn't be the same as hydro assist, but it would make it easier to steer, right?

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Re: Hydro Assist:box and pump mods
« Reply #45 on: Jul 08, 2005, 08:32:04 PM »
I have that setup right now.  Its better but not 1/1838388232th as strong as hydro assist.
Full hydro, 186:1 with an auto and 44's what could go wrong??

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Re: Hydro Assist:box and pump mods
« Reply #46 on: Jul 08, 2005, 08:45:02 PM »
The larger hole should only increase the flow volume not the pressure. You would have to play with the spring to increase the pressure and that may damage the seals in the box.
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freds40 [OP]

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Re: Hydro Assist:box and pump mods
« Reply #47 on: Jul 08, 2005, 08:49:57 PM »
Yeah you can drill the oriface without assist but it won't really give you what assist does. Shimming the spring tends to give a little added push but it will wear out a pump real quick. I've heard many people that have shimmed the spring and after killing their pump, they won't do it again.
On other boxes, you just need to know where the 2 port veins run through the box. I'll be doing my new Saginaw box here in the next few days and figuring out where the veins are wasn't too difficult.
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Duffil

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Re: Hydro Assist:box and pump mods
« Reply #48 on: Jul 08, 2005, 08:55:34 PM »
The larger hole should only increase the flow volume not the pressure. You would have to play with the spring to increase the pressure and that may damage the seals in the box.

yeah, you're right...I didn't word that correctly...but, wouldn't more flow also produce a smoother, easier arc of the wheel?  Of course, I have never modded a box or pump.... :dunno:

Willy Mammoth

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Re: Hydro Assist:box and pump mods
« Reply #49 on: Jul 08, 2005, 09:16:45 PM »
yeah, you're right...I didn't word that correctly...but, wouldn't more flow also produce a smoother, easier arc of the wheel? Of course, I have never modded a box or pump.... :dunno:

If your problem is the pump can't keep up with how fast you turn the wheels, then yes it may help. This is caused by the fluid being restricted and not folwing fast enough. It is most likely a safety feature, but no good for working the wheels back and fourth in the mud.
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FIREBALL

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Re: Hydro Assist:box and pump mods
« Reply #50 on: Jul 10, 2005, 08:05:39 AM »
great write up, very detailed. I think i'm going to have to collect up some parts.

alwayzbroken

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Re: Hydro Assist:box and pump mods
« Reply #51 on: Aug 19, 2005, 09:46:24 PM »
Does anybody know it the process for doing the pump mod is any different on a 1992 P/S pump? I looked at mine on my 92 and the restrictor has two orifices rather than one. It looks different and it didn't look easy to drill. Is there a way to increase flow and pressure on the later model power steering pumps? Thanks.
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Re: Hydro Assist:box and pump mods
« Reply #52 on: Aug 19, 2005, 09:48:36 PM »
Same setup.  Take the line off and the large nut looking thing (yea thats the technical term :gap: ) and drill the restrictor out just like any other yota pump.  You wont even need a vice, the restrictor is very fragile and weak.  I just held mine in my hand and popped through it with a drill.
Full hydro, 186:1 with an auto and 44's what could go wrong??

freds40 [OP]

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Re: Hydro Assist:box and pump mods
« Reply #53 on: Aug 19, 2005, 10:49:03 PM »
If you look @ the pics on replies 26 and 27, it shows exactly what the restrictor is and what it looks like. The pump is a bit dirty but just imagine the pressure hose goes into that part. Like WT said, this part is super easy. It took all of 5-10 mins from disconnecting the hose to re-attaching it.
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alwayzbroken

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Re: Hydro Assist:box and pump mods
« Reply #54 on: Aug 20, 2005, 06:44:41 PM »
If you look @ the pics on replies 26 and 27, it shows exactly what the restrictor is and what it looks like. The pump is a bit dirty but just imagine the pressure hose goes into that part. Like WT said, this part is super easy. It took all of 5-10 mins from disconnecting the hose to re-attaching it.

The restictor in my pump is not the same as the one in the picture. The one in the picture obviously has one orifice that can be easily drilled out. The resrictor in my pump has two orifices side by side and appear to be very difficult to drill out if not impossible without creating a 3/8" hole. I will post a picture when I get a chance. I am also going to try to swap in a restrictor from a differant pump that can be drilled out.
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Re: Hydro Assist:box and pump mods
« Reply #55 on: Aug 20, 2005, 06:52:10 PM »
My restrictor had two small holes like you say your does.  My pump is a 94 so Ill bet they are the same series of pump. ;)  I used a 3/16" bit on mine and just drilled towards the middle.  No biggy. 
Full hydro, 186:1 with an auto and 44's what could go wrong??

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Re: Hydro Assist:box and pump mods
« Reply #56 on: Aug 22, 2005, 04:07:03 PM »
Got my box drilled, tapped, and bolted back up. Just need to weld on the tabs for the ram.
Damn this was simple.
I'm hoping the chevy pump doesn't need any mods. I'm assuming it will work as is, but we'll see very soon.

alwayzbroken

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Re: Hydro Assist:box and pump mods
« Reply #57 on: Aug 22, 2005, 09:49:15 PM »
My restrictor had two small holes like you say your does. My pump is a 94 so Ill bet they are the same series of pump. ;) I used a 3/16" bit on mine and just drilled towards the middle. No biggy.

Alright, I'll give it a go. Thanks.
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freds40 [OP]

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Re: Hydro Assist:box and pump mods
« Reply #58 on: Aug 23, 2005, 06:10:42 AM »
Got my box drilled, tapped, and bolted back up. Just need to weld on the tabs for the ram.
Damn this was simple.
I'm hoping the chevy pump doesn't need any mods. I'm assuming it will work as is, but we'll see very soon.

I haven't done it yet but I'm in the middle of my Saginaw bow/ Chevy pump mods. I have read that you do the same thing to the restrictor plate in a GM pump.
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Re: Hydro Assist:box and pump mods
« Reply #59 on: Aug 23, 2005, 08:06:28 AM »
Was talking to Howe the other day who says they would port my box but install new stops within the box.  Anyone know where these stops might go internally?  Seems I can port the box easily but stops?  Also, they say that they would replace all seals.  Think this is necessary? 
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