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Old 03-20-2007, 07:36 PM   #1 (permalink)
vanguard_anon
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Join Date: Oct 2005
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Location: RTP, NC
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Fairly well researched hydro steering question

Problem: It takes too many turns to go from lock to lock.

System details:
Steeting control unit:
Charlynn 2415027-002
Open center non reactive 4.5 cu in/rev Series 4 with Power Beyond
rated 4 gpm flow, and 1800psi maximum system pressure
Hydraulic Cylinder:
Cheif ram/cylinder 2" bore 8" stroke
Pump:
Stock jeep PS pump capable of 2.4 - 2.8 gpm and 1350-1450 psi.
Other notes:
In addition to the integrated reservoir there is another reservoir and a cooler in the PS system. I'd guess it hold about 5 quarts in the system.
37" krawlers
Question: According to the math it takes 5.6/4 turns lock-to-lock. If I move to a 6.0 CI control unit like this one it should take 4.2/3 turns lock to lock. If I go with a 7.5 CI control unit like this one it will take 3.12/2.4 turns lock to lock.

Aside from the change in turns, what will the impact be? Will turning the steering wheel be too hard? If so, what fixes that, a new pump? Which would you choose?
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