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A orbit (steering) valve from a fork truck or combine, a Hydroboost power steering pump, 1/2" cooler, a 2" X 8" hyd cylinder, a 3000 psi gauge, some 3/8" pressure hoses, some 1/2" return hose, a few JIC fittings, a optional adj. pressure relief valve, optional 8-12 gpm flow restricter valve, optional oil temp gauge. a gallon of auto trans fluid or hydraulic fluid and about 10-12 degrees of pos. caster.

[ 09-24-2001: Message edited by: dirtrod ]
 

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heres a pic of my orbital vavle..its a char lynn valve, and i believe it displaces like 6.3 and its about 3 turns lock to lock.<IMG width=352 height=288 SRC="http://www.pirate4x4.com/ubb/uploads/valve.JPG">
 

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Originally posted by dirtrod:
<STRONG>A orbit (steering) valve from a fork truck or combine,

</STRONG>
You can get them at any marine place as well <IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/tongue.gif" border="0">
 

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Can you explain why the caster has to be between 10 to 12 degrees positive?

Thanks,
Charles
 

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thats' how to gain any return to center with a fully hydraulic steering setup...... <IMG SRC="smilies/biggrin.gif" border="0">
 

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Originally posted by fj40charles:
<STRONG>Can you explain why the caster has to be between 10 to 12 degrees positive?

Thanks,
Charles</STRONG>
The caster makes the wheels want to go straight down the road (like a raked motorcycle), without it, it will wander from side to side and it's hard as hell to drive on the road (like a unicycle).

I think the tractor/combine salvage places around here want about $300 for a orbit valve and cylinder, and then you need probably another 250 for the hoses and other stuff. Surplus center sells new valves and cylinders pretty cheap.
 

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Originally posted by dirtrod:
<STRONG>A orbit (steering) valve from a fork truck or combine, a Hydroboost power steering pump, 1/2" cooler, a 2" X 8" hyd cylinder, a 3000 psi gauge, some 3/8" pressure hoses, some 1/2" return hose, a few JIC fittings, a optional adj. pressure relief valve, optional 8-12 gpm flow restricter valve, optional oil temp gauge. a gallon of auto trans fluid or hydraulic fluid and about 10-12 degrees of pos. caster.
</STRONG>
dirtrod,
Do you use a hydroboost braking system with the hydro steer pump? If so does it affect the pressure, or make a noticable difference in steering with the brakes applied?
 

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55 up John Deere squareback combines have everything a guy would need. Valve, a pump about the size of a Alt., line and cyl. A guy can buy a complete squareback for around 400-500bucks, but most of us don't have the room for that. <IMG SRC="smilies/biggrin.gif" border="0"> The steering assembly doesn't often wear out on tractors, so Ag pick-and-pulls have plenty around...I wouldn't pay more than $50-100 for a complete set up, but we do have a sh1tload of tractors in MN.
 

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Discussion Starter · #12 ·
Why only one Ram? Don't they push better than pull? Would it be better to run two rams to get rid og this? How can you protect the lines?
 

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Originally posted by Mud Lite:
<STRONG>Why only one Ram? Don't they push better than pull? Would it be better to run two rams to get rid og this? How can you protect the lines?</STRONG>
Double Acting Cyl. Works both ways..
check out www.mcmaster.com to find some more parts.
 

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Originally posted by cruiserrg:
<STRONG>dirtrod,
Do you use a hydroboost braking system with the hydro steer pump? If so does it affect the pressure, or make a noticable difference in steering with the brakes applied?</STRONG>
No, I'm running manual disc brakes, I've never had hydroboost brakes, so I don't know if it makes a difference.
 
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