Case 580L, 580M Hydraulic Cylinder Seal Kits

Hydraulic cylinder seal kits and tools for Case 580L and 580M backhoe loaders, covering complete seal rebuild packages, boom, dipper, bucket, stabilizer, swing, loader tilt, extendahoe, and steering cylinder circuits across 3.75-inch and 4-inch swing cylinder bore configurations.

Fits Models At A Glance

• 480F / 570 Series: 480F, 570LXT, 570MXT, 570NXT, 570N EP
• 580K / 580SK / 580 Super K Series: 580K, 580SK, 580SL, 580SM, 580 Super K
• 580L / 580 Super L Series: 580L, 580L Series II, 580SL, 580 Super L
• 580M / 580 Super M Series: 580M, 580M Series II, 580M Series III, 580SM, 580SM Series III, 580 Super M
• 580N / 580 Super N Series: 580N, 580N Tier 3, 580N EP, 580SN, 580 Super N, 580 Super N WT
• 590 Series: 590 Turbo, 590L, 590SL, 590SL Series I, 590SM, 590SN, 590T, 590 Super L, 590 Super M, 590 Super M Series I, 590 Super N

Key Notes

• Application: Hydraulic cylinder seal kits and tools for Case 580L and 580M backhoe loader cylinders
• Coverage: Includes complete hydraulic cylinder seal rebuild packages for 580L in 3.75-inch and 4-inch swing bore configurations and for 580M, boom cylinder seal kits, dipper cylinder seal kits, bucket cylinder seal kits, stabilizer cylinder seal kits, swing cylinder seal kits in 3.75-inch and 4-inch bore sizes, loader bucket tilt cylinder seal kits, extendahoe and clamshell loader bucket cylinder seal kits, 4WD and 2WD steering cylinder seal kits, multi-application cylinder seal kits, loader bucket cylinder hoses, hydraulic line supports, and cylinder tools
• Function: Restores hydraulic cylinder sealing and performance across all major cylinder positions on Case 580L and 580M backhoe loader platforms
• Fitment Note: 3.75-inch and 4-inch swing cylinder bore sizes require different seal kits — verify swing cylinder bore size when ordering

Why Choose Broken Tractor

• ✅ Complete seal rebuild packages available for 580L and 580M series
• ✅ 3.75-inch and 4-inch swing cylinder bore configurations covered
• ✅ 4WD and 2WD steering cylinder seal kit options available

Frequently Asked Questions

Which swing cylinder seal kit fits a Case 580L backhoe?

It depends on whether your 580L has a 3.75 inch or a 4 inch swing cylinder bore, because the two bore sizes take different seal kits. Broken Tractor offers a complete hydraulic cylinder seal kit package for the 580L with the 3.75 inch swing bore (CS-SK-3A) and one for the 4 inch swing bore (CS-SK-3-4), plus individual swing cylinder seal kits 122535A1 and 191747A1. Measure the swing cylinder bore or match the part number on your existing kit before ordering.

What seal kits do I need to rebuild the hydraulic cylinders on a Case 580M?

The simplest option is the hydraulic cylinder seal kit package for the Case 580M (CS-SK-3B). If you are only resealing certain cylinders, we also carry individual kits that fit the 580M, including the boom cylinder seal kit (182218A1), the dipper/crowd cylinder repacking kit (234844A1), the bucket cylinder seal kit (131750A2) and the stabilizer outrigger cylinder seal kit (1543269C1). Swing cylinder seal kits for the 580M are available too.

Which steering cylinder seal kit fits a Case 580L or 580M?

Broken Tractor offers a 4WD steering cylinder seal kit (D149739) that fits the 580L, 580 Super L, 580M and 580 Super M. We also carry a power steering cylinder seal kit (G110045) listed for the 580L, 580 Super L, 580M and 580 Super M. Fitment can depend on your drive type and steering cylinder, so match the part number or call (800) 909-7060 to confirm before ordering.

What is the difference between the backhoe bucket and loader bucket tilt cylinder seal kits for a Case 580L?

They reseal two different cylinders: the backhoe bucket cylinder at the rear of the machine and the loader bucket tilt cylinder at the front. For the backhoe bucket cylinder, we carry seal kit 131750A2, which fits the 580L and 580M. For the loader bucket tilt cylinder on the 580L, we carry the USA made seal kit 175251A1.

Do I need special tools to replace hydraulic cylinder seals on a Case backhoe?

Broken Tractor carries two tools made for this job: a Case hydraulic spanner wrench for cylinder repair (CAS-1456A) and a hydraulic gland seal installation tool kit (CAS-1457). The spanner wrench is listed for Case backhoes, dozers and loaders, and the gland seal installation kit is made for hydraulic cylinders on backhoes and loaders.