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What details help identify a Case 580K hydraulic cylinder?
Identifying a Case 580K hydraulic cylinder starts with the exact cylinder position and the machine details. The same machine family can use different cylinders depending on serial range, loader or backhoe position, mounting style, and previous repairs.
Best first step: send CSC the machine model, serial number, cylinder location, pin-to-pin length, rod diameter, barrel diameter, and clear photos of both ends.
Start with the cylinder location
- Loader lift, loader bucket, stabilizer, boom, dipper, bucket, or steering.
- Left side or right side, if the machine uses mirrored parts.
- Whether the request is for a complete cylinder, rod, gland, seal kit, or mounting part.
- Any readable tag, casting mark, or stamped part number.
Measurements that help
- Pin-to-pin length with the cylinder in a stable position.
- Rod diameter and exposed rod length.
- Barrel outside diameter and approximate bore, if known.
- Pin diameter, mount width, and port location.
- Port style and hose orientation.
Photos to include
Take one wide photo showing where the cylinder sits on the machine, then close photos of the rod end, base end, ports, mounts, and any damaged area. If the cylinder is already removed, include a tape measure in the photos so scale is clear.
When a seal kit request needs more detail
A seal kit usually requires rod, bore, gland, and seal profile details. If the rod is pitted, bent, or deeply scratched, the repair may need more than seals. CSC can help review the information and point the request toward the right part path.
Next step
Send the Case 580K machine details, cylinder location, measurements, and photos before requesting hydraulic cylinder help.
Frequently asked questions
What is the first detail to confirm on a Case 580K hydraulic cylinder?
Confirm the cylinder position first, such as boom, dipper, bucket, stabilizer, loader lift, or steering. The same machine family can use different cylinders at different positions.
Which measurements help identify a hydraulic cylinder?
Pin-to-pin length, rod diameter, barrel diameter, mount width, pin diameter, and port orientation are the usual starting points. Clear photos beside a tape measure help when some dimensions are only approximate.
Do serial range or machine options matter on a 580K cylinder?
Yes. Serial breaks, loader/backhoe configuration, and prior repairs can change what cylinder or internal parts make sense to review.
What if I only need seals and not the whole cylinder?
Seal kit review still needs rod, bore, gland, and seal-profile details. If the rod is bent, pitted, or scored, seals alone may not solve the problem.
What photos should I send with a cylinder request?
Send one wide machine photo plus close photos of both ends, ports, tags, the damaged area, and the mounting points. If the cylinder is removed, include photos of it fully extended and retracted if possible.
What mistakes slow down hydraulic cylinder matching?
The biggest delays come from missing cylinder position, no serial information, no mount measurements, or photos that only show the rod and not the end connections.
When should I ask for review before ordering?
Ask for review when the machine has older repairs, welded mounts, unreadable numbers, or uncertain measurements. Those cases usually need a closer fitment check before a part path is chosen.
Related CSC categories
Use these CSC pages as a starting point when this question matches your machine, tool, or jobsite category. If the exact part or fitment is unclear, send CSC the measurements and photos before ordering.

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