Case 590 Super N Hydraulic Cylinder Seal Kits

Hydraulic cylinder seal kits and tools for Case 590 Super N backhoe loaders, covering boom, dipper, bucket, stabilizer, swing, loader lift, loader tilt, clamshell, and extendahoe cylinder circuits.

Fits Models At A Glance

• 480F / 570 Series: 480F, 570LXT, 570MXT, 570NXT, 570N EP
• 580K / 580SK Series: 580K, 580SK, 580SL, 580SM
• 580L / 580 Super L Series: 580L, 580L Series II, 580 Super L
• 580M / 580 Super M Series: 580M, 580 Super M
• 580N / 580 Super N Series: 580N, 580N EP, 580SN, 580 Super N, 580 Super N WT
• 590 Series: 590 Turbo, 590SL, 590SL Series I, 590SM, 590SN, 590T, 590 Super L, 590 Super M, 590 Super N

Key Notes

• Application: Hydraulic cylinder seal kits and tools for Case 590 Super N backhoe loader cylinders
• Coverage: Includes boom cylinder seal kits, dipper cylinder seal kits, bucket cylinder seal kits, stabilizer cylinder seal kits, swing cylinder seal kits, loader lift cylinder seal kits for wide track configuration, loader bucket tilt cylinder seal kits, clamshell loader bucket cylinder seal kits, extendahoe and clamshell loader bucket cylinder seal kits, multi-application cylinder seal kits, hydraulic line supports, and cylinder tools
• Function: Restores hydraulic cylinder sealing and performance across all major cylinder positions on Case 590 Super N backhoe loader platforms
• Fitment Note: Wide track loader lift cylinder seal kit applies to 580 Super N WT and 590 Super N — verify wide track configuration when ordering

Why Choose Broken Tractor

• ✅ Seal kits available for every major cylinder position on the 590 Super N
• ✅ Wide track loader lift cylinder seal kit option available
• ✅ Covers 580 Super N through 590 Super N platforms

Frequently Asked Questions

What hydraulic cylinder seal kits fit a Case 590 Super N backhoe?

Broken Tractor carries seal kits for every major cylinder position on the Case 590 Super N, including boom, dipper, backhoe bucket, stabilizer, swing, loader lift, loader bucket tilt and clamshell bucket cylinders. Each cylinder uses its own kit, so match the kit to the specific cylinder you are resealing. We also carry rubber hydraulic line support blocks and cylinder tools for the 590 Super N.

Do the boom, dipper and bucket cylinders on a Case 590 Super N use the same seal kit?

No, the boom, dipper and backhoe bucket cylinders on a Case 590 Super N each take a different seal kit. The boom cylinder kit is part number 84259220, the dipper cylinder kit is 84259223, and the backhoe bucket cylinder kit is 84259225. The bucket cylinder kit also fits the Case 580 Super N, while the boom and dipper kits are listed for the 590 Super N only.

Which swing cylinder seal kit fits a Case 590 Super N?

The swing cylinder seal kit, part number 122535A1, fits the Case 590 Super N and is made for swing cylinders built by Bulldog or Hercules Hydraulics. Check which brand of swing cylinder is on your machine before ordering. If you are not sure, call (800) 909-7060 and our parts team can help confirm the right kit.

Will the 590 Super N loader lift and stabilizer seal kits fit a Case 580 Super N?

The loader lift cylinder seal kit (84258339) and the stabilizer cylinder seal kit (84259228) fit the Case 590 Super N and the 580 Super N Wide Track. If you have a 580 Super N, confirm that it is the wide track configuration before ordering either kit. Matching the part number on your existing cylinder or kit is the safest way to verify fitment.

What tools do I need to reseal a hydraulic cylinder on a Case 590 Super N?

Broken Tractor offers a Case hydraulic spanner wrench (CAS-1456A) for cylinder repair and a hydraulic gland seal installation tool kit (CAS-1457) for Case backhoe cylinders. The spanner wrench is used for cylinder disassembly and reassembly, and the installation tool kit helps fit the gland seals. Both tools are sold separately from the seal kits.