101 Power Steering

**101RRS** · 9th October 2013, 12:23 PM

I have acquired a 90s Jeep Cherokee power steering box. It is quite compact and a lot heavier built that the 101 box and while I haven't checked it should go in with minimal modification to the current mounts - certainly no cutting of the chassis.

While this is the positive side - there is a major deficiency in that it turns the wrong way. so putting it in as is would result in the 101 turning left instead of right.

Before moving on to something else I thought a solution could be to put a small gearbox on the bottom of the steering column that changes the direction of the drive - this would comprise an input shaft and an out put shaft with a gear on each. The issue is where to get the gear and I was think the gear off a larger engine starter motor welded to a shaft then heat treated would work - likewise maybe the gear of the bottom of a large distributor would work. The gearbox casing would just be fabricated out of some thick mild steel with small sealed bearings at either end. Given the low rotational speed of the gears grease could probably be used as the gear lubrication with a grease nipple to keep it topped up.

So - is this a looney proposal and would little gearboxes like I described be available off the shelf somewhere.

At this time it is just an idea - nothing more advanced.

Cheers

Garry

**Lotz-A-Landies** · 9th October 2013, 01:20 PM

Hi Garry

I know that AJ uses bevel boxes from forward control vans. If the rotation is not correct he moves one gear to the oposite side which reverses the relationship. He usually places the bevel box immediately under the floor. There is a bevel box off one of the Isuzu utes that looks very robust

You can also get stock gears from people like Ronson Gears Stock Gears and Racks - Gear Racks, Spur Gears, Mitre Gears, Bevel Gears | Ronson Gears Australia or Blackwoods. https://www.blackwoods.com.au/search...itre/202003398

**Sitec** · 9th October 2013, 03:54 PM

Garry... Thinking outside the box here, a small Bosch hydraulic pump is basically what you describe.... If you could find two scrap hydraulic pumps of the same type and use both drive gears you would have a reverse direction box.. Plug both the old inlet and outlet ports and fit a grease nipple to one of those plugs... Job done... Found this photo on Google... This is the type of pump I mean... Just a thought...

**101RRS** · 9th October 2013, 05:22 PM

Thanks Diana - I will see if I can one from a wrecker and see how it goes - the current box I have would work if mounted on the inside of the bumper if i can get steering drive to it.

Sitec - not sure I follow the use of a hydraulic pump - do you mean use the innards of these pumps as I suggested above??

Thanks for the ideas - it all helps.

Cheers

Garry

**Homestar** · 9th October 2013, 05:38 PM

Diana beat me to the punch here about the bevel box AJ uses. His conversion is very good as there is no cutting of the chassis at all, and it can be returned to standard steering easily if desired. It is how I'll do mine if/when I get around to it - well, actually pay AJ to do it is what I meant...

**Sitec** · 9th October 2013, 06:39 PM

Originally Posted by garrycol

Sitec - not sure I follow the use of a hydraulic pump - do you mean use the innards of these pumps as I suggested above??

Hi Garrycol.
The guts of these pumps are really simple. Just a pair of matching meshing gears mounted in an alli body (the bit that wears out), and running with bushes either end of each gear. All the end plates are standard, so it could be easily turned into the reverse drive box you describe. Will draw a pic later but have to be elsewhere now.. Cheers.

**101RRS** · 9th October 2013, 08:01 PM

Yep - thanks - thought it through and I see what you mean - a good start.

Cheers

Garry

**DasLandRoverMan** · 12th October 2013, 05:47 PM

There's a guy in the UK that did PAS with the jeep box, a bit of a rough and ready job to say the least, but I believe it still works.

To solve the rotation problem he rotated the drop arm on the steering relay 180 degrees, lost out a bit on right hand lock because if it went too far it wouldn't straighten up again. The drivers floor was also reshaped with a hammer to clear the steering arm on the box.
It's on the 101 club forum somewhere (the chap who did the wood gas setup) but I can't be bothered looking it out (quick search didn't find it).

I like Simons idea, with the pump gears, couldn't really ask for a better start than a pair of hardened gears 2-3 inches deep with a reasonable diameter.

**Brute** · 16th October 2013, 01:06 PM

Has anyone tried to use a steering torque amplifier as used in a lot of race cars, tractors etc.

Justs fits inline in the steering column between wheel and box. connect hoses from a pump. You turn steering and the unit hydraulically multiplies the torque at the output side through to the standard manual steering box. Should be fairly easy to mod steering column to fit it.

Ian

**DasLandRoverMan** · 16th October 2013, 04:29 PM

Won't work particularly easily with the 101 steering box/column setup as it's a one piece setup that doesn't lend itself to splitting in two.

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