Case 590 Super L, 590 Super M Backhoe Boom Parts

Boom pins, bushings, boom cylinders, backhoe booms, snap rings, and washers for Case 590 Turbo, 590 Super L, and 590 Super M backhoe loaders, covering all major boom and swing tower connection points.

Fits Models At A Glance

• 580B / 580C / 580D Series: 580B, 580C, 580D, 580SE
• 580K / 580 Super K Series: 580K, 580SK, 580 Super K
• 580L / 580 Super L Series: 580L, 580SL, 580 Super L
• 580M / 580 Super M Series: 580M, 580SM, 580SM+, 580 Super M
• 580N / 580 Super N Series: 580N, 580SN, 580 Super N
• 590 Series: 590 Turbo, 590L, 590SL, 590SM, 590SM Series II, 590SM Series III, 590 Super L, 590 Super L Series I, 590 Super L Series II, 590 Super M, 590SN, 590 Super N

Key Notes

• Application: Boom pins, bushings, boom cylinders, and booms for Case 590 Super L and 590 Super M backhoe loader boom circuits
• Coverage: Includes new and used backhoe booms, new boom cylinders, boom to dipper pins, boom to swing tower pins, boom cylinder to swing tower pins, dipper cylinder to boom and dipper pins, boom at dipper bushings, boom at swing tower bushings, boom and dipper cylinder bushings, boom to dipper pin nuts, snap rings in 1.5-inch, 1.75-inch, and 2-inch sizes, pin washers, hydraulic line supports, extendable dipper hose clamps, and bushing tools
• Function: Maintains boom structural integrity, boom cylinder function, and all boom pivot connections on Case 590 Turbo, 590 Super L, and 590 Super M backhoe loader platforms
• Fitment Note: Series I and Series II boom to swing tower pin configurations differ — verify series when ordering

Why Choose Broken Tractor

• ✅ New and used backhoe booms available for 590 Super L and 590 Super M
• ✅ New boom cylinders and complete pin and bushing coverage available
• ✅ Snap rings, washers, and bushing tools all available

Frequently Asked Questions

What boom to swing tower pin fits a Case 590 Super L?

It depends on the series of your machine, because Series I and Series II boom to swing tower pin configurations differ. Broken Tractor carries pin 175596A1, which fits the 590 Super L Series I, 590 Super L Series II, and 590SM Series 2 and Series 3. We also carry swing tower to boom pin 129327A1 for the 590 Turbo, 590 Super L and 590 Super M. Match the part number on your old pin or call (800) 909-7060 to confirm the right pin before ordering.

Can I get a replacement backhoe boom for a Case 590 Super M?

Yes, Broken Tractor offers both a new and a used backhoe boom for the Case 590 Super M and 590 Super L. The new steel boom 140505A1 is an OEM replacement made in the USA, and the used boom 140505A1-U is also made in the USA. For the 590 Super N, we carry a low-hour used OEM boom, part number 84538196-U.

What boom cylinder fits a Case 590SL or 590SM backhoe?

Boom cylinder 175785A1 fits the Case 590 Super L and 590 Super M backhoe. Broken Tractor offers it as a new cylinder. We also carry the matching dipper and boom cylinder pins and boom cylinder bushings for the boom circuit on these machines.

What bushings are used on the boom of a Case 590 Super L or 590 Super M?

We carry boom bushings for the dipper end, the swing tower end, and the cylinder connections. These include boom to dipper bushing D144168, right-hand boom to dipper bushing D144197, a boom at dipper and boom cylinder bushing, a boom at swing tower bushing, and hydraulic cylinder bushing 1980371C1. For pulling worn bushings and pressing in new ones, Broken Tractor also offers a steel bushing driver removal and installation tool.

What size snap rings and washers fit Case 590 backhoe boom pins?

Broken Tractor carries boom pin snap rings in 1.5 inch, 1.75 inch and 2 inch sizes. These include D25279 for 1.5 inch pins, 103-16175 for 1.75 inch pins and 84158898 for 2 inch pins. Pin washers come in 1.5 inch (U11649 and 495-81292) and 1.75 inch (495-81226 and 30575) sizes, and they fit the 590 Turbo, 590 Super L and 590 Super M. Match the snap ring and washer to the diameter of the pin you are installing.