The is typically a 4-ton hydraulic body repair jack kit (also known as a Porta-Power kit) designed for automotive body and frame repair .
While the pump and ram can handle 4 tons, using long combinations of extension tubes reduces the maximum safe load capacity due to the risk of the tubes bending or buckling.
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: Ensure the hydraulic ram pushes in a perfectly straight line. Side-loading bends cylinder rods and blows internal TPU seals.
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Summary
Always store the unit with the release valve open and the ram fully retracted. This keeps the precision-ground steel piston rod protected inside the cylinder housing, preventing rust, pitting, and environmental contamination.
Interlocking pipes of varying lengths that connect to the ram, allowing the technician to bridge wide gaps (such as stretching between two inner body panels).