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Hydraulic Steering Assist
01-20-2015, 08:27 PM
Post: #11
RE: Hydraulic Steering Assist
Lol yup

Alvarez Metal Works
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01-27-2015, 12:44 PM
Post: #12
RE: Hydraulic Steering Assist
Yet again, what is it with this forum and emergency vehicles lol.

Tank looks awesome buddy.

"1988" GMC never ending project.
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01-27-2015, 01:04 PM
Post: #13
RE: Hydraulic Steering Assist
(01-20-2015 06:11 PM)AlvarezMetalWorks Wrote:  They must have wrecked it. That's shocking lol.

BTW I'm really not a fan of Hydroboost system. We have a brand new ambulance at work that tossed the belt for some fucking reason. That's when I quickly realized that not only could I not steer very well (as expected) but the damn brakes didn't work (not expected). I almost backed through the garage door while I was trying to change bays so I could put it on the lift. Started it up, put it in reverse while with the brakes held. The damn thing started backing up anyway!

That's not normal?

Think I may need to take a look at the Cheroke's brakes ...

Was backing out of my parents driveway (completely ice) and was waiting for traffic to clear. The entire time I was sitting in reverse, holding the brakes, the right rear wheel was spinning. Same thing when I drove in and stopped before putting it in neutral, then park. Had to let the rear wheels stop spinning before park.

Mike
2000 XJ Cherokee - 3.5'' lift / 32'' Tirerecapper Pizza Cutters / Front Locker
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01-28-2015, 08:11 AM
Post: #14
RE: Hydraulic Steering Assist
(01-27-2015 12:44 PM)Capria Wrote:  Yet again, what is it with this forum and emergency vehicles lol.

Tank looks awesome buddy.

I like blinky lights

Too Many Projects . . .
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02-22-2015, 07:26 PM
Post: #15
RE: Hydraulic Steering Assist
New to me steering box

[Image: DSCF9258_zps5rqcrrtd.jpg]

I disassembled this one, the previous owner has a heavy foot, so I wanted to make sure nothing was cracked.

[Image: DSCF9262_zpskgcuaef4.jpg]

Drilled the housing. The purpose is to direct hydraulic pressure from the steering system to the ram. These holes tap into the gearboxes internal fluid passages. One has pressure when turning left and the other when turning right.

[Image: DSCF9294_zps8ohlntfs.jpg]

Tapped to ¼" NPT, and a test fit of the adapter fittings. I will use Hydraulic hoses to connect the box to the ram. These fittings adapt to a -6JIC hose.

[Image: DSCF9301_zpsend8lz2a.jpg]

You could use an AN fitting instead of JIC. Both have a 37° flare and are capable of holding high pressures. The only difference is that AN fittings are aluminum, while a JIC is steel. Dimensionally they are identical.

AN is short for Aeronautical Navy and JIC is short for Joint Industry Council. Both are identified by a - size ranging from 2 to 16, with the number being equal to 1/16". So a -6 will have an internal diameter of ⅜", a -10 would be ⅝", -14 is ⅞" and so on.

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04-11-2015, 06:36 PM
Post: #16
RE: Hydraulic Steering Assist
Finished rebuilding the steering box.

[Image: DSCF9426_zpsmvb25u7m.jpg]

Mounted the steering cooler, and I'm officially out of space in front of the radiator, lol. Using a used trans cooler from an 06 Silverado, mounted on a slight angle, it was the only way to fit it in there.

[Image: DSCF9434_zpsakjhbgff.jpg]

Had to trim the plastic grill a bit.

[Image: DSCF9449_zpsl4mbbomt.jpg]

Reservoir bolted to the drivers fender and plumbed in.

[Image: DSCF9438_zpsqo15sheb.jpg]

New to me pump in place, I replaced all the pressure lines with hydraulic hose.

[Image: DSCF9443_zpsbeidizb8.jpg]

And a filter between the cooler and reservoir.

[Image: DSCF9444_zpsb4lwy9kq.jpg]

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04-11-2015, 08:36 PM
Post: #17
RE: Hydraulic Steering Assist
Does this mean it's all working and ready to go? Or do you still have to mount the ram.

Alvarez Metal Works
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04-12-2015, 07:16 AM
Post: #18
RE: Hydraulic Steering Assist
Still have to swap out the gearbox and mount the ram. I'm getting there, slowly.

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04-12-2015, 09:07 AM
Post: #19
RE: Hydraulic Steering Assist
I'm using a single end PSC ram. 1.75" diameter, 8" stroke. There are many different configurations available, so make sure yours is correct for the application. A larger piston diameter will push with more force, but move at a slower speed given a constant fluid pressure and volume. A smaller piston will react quicker, but wont give as much assist.

One end will attach to the front axle housing and the other to the tie rod.

[Image: DSCF9428_zps9zl8tcqz.jpg]

Instead of welding the ram mount to the tie rod I'll run a tie rod clamp from DIY4X. This way I can fine tune the front end alignment, and not have to rotate the tie rod a full turn to make the mounts line up again.

[Image: DSCF9425_zpsve1vjjgc.jpg]

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04-17-2015, 02:08 PM
Post: #20
RE: Hydraulic Steering Assist
is there a chart you go by for cylinder sizes, flow, rpms? something of that sort.. or possibly an equation? I will probably be doing the same thing with the sammi as far as piecing everything together.
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