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| the series I, II, and III Steigers all had gear-pump open-center (OC) hydraulic systems. Unless you have a laser rig that is specifically designed for open-center hydraulics, you could be headed for trouble with that Tiger. Most laser rigs use a closed-center (CC) hydraulic system, and when you "dead-end" an OC system on a CC valve, the system pressure rises to relief valve opening pressure, and stays there.... until the pump burns up. Then you'll have a Tiger by the tail.
On the other hand, if your laser rig is OC or can be converted to OC, at least you can start off on the right foot. I would also be concerned that the hydraulic cooling capacity may be marginal with constant-flow operations in high ambient temperatures.
The pump mounting pattern on the Tiger is SAE-standard. Baum Hydraulics in Omaha NE can custom-build a larger hydraulic pump for just about any gear pump going. Give them the numbers off your existing pump. You would have to make sure there is room for a wider/longer pump body, and have to do some hydraulic re-plumbing.
One other thing... that 903 Cummins was not the best engine ever made.
Edited by Redwrench 1/18/2008 19:00
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Steiger Hydraulic Upgrade ?
