Backhoe Cylinder Rebuild — Ames Hydraulics

Backhoe Cylinder Rebuild — Boom, Dipper, Bucket, Swing, Stabilizer, Steering

A backhoe has more hydraulic cylinders than almost any other piece of construction equipment its size. Boom cylinder, dipper (stick) cylinder, bucket (curl) cylinder, swing cylinder, two stabilizer cylinders, hydraulic thumb cylinder if equipped, front loader arm cylinders, front bucket tilt cylinders, and steering cylinders — a typical backhoe loader has 10-14 cylinders. When any one of them fails, part of the machine’s function is compromised. Backhoe cylinder rebuild is a routine job in our shop.

Our shop is in Ames, Iowa. We do backhoe cylinder rebuild on Case 580/590 series, John Deere 310/410/710/710J, Cat 416/420/430/450/450F, Kubota B/L series with backhoe attachments, New Holland B95/B110, JCB 3CX/4CX, Terex TX, and older Case, Ford, and Massey Ferguson backhoes. Every brand uses similar-size cylinders with brand-specific seal kits. We stock the common kits and can source specialty kits within a day or two.

Boom Cylinder Rebuild

The boom cylinder is the biggest cylinder on the backhoe end of the machine. It lifts the boom, dipper, and bucket assembly with load. Failure shows up as slow lifts, boom drift under load, or oil leaking down the rod. Backhoe cylinder rebuild on a boom cylinder is a full bench job — pull the cylinder, disassemble, inspect the rod for pitting, replace all seals, hone the barrel if needed, reassemble with fresh fluid, pressure test.

Dipper And Bucket Cylinders

The dipper cylinder (also called the stick cylinder or crowd cylinder) extends and retracts the dipper stick. The bucket cylinder curls and dumps the bucket. Both cycle constantly during digging. Their failure rates are the highest of any backhoe cylinder because of duty cycle. Backhoe cylinder rebuild on dipper and bucket cylinders is standard bench work.

Swing Cylinders

Swing cylinders rotate the boom side-to-side. There are two — one for each direction. They work against each other in a closed circuit. When one seals blows, the swing slows down or gets weak in one direction. Backhoe cylinder rebuild on swing cylinders usually means rebuilding both together because they work as a matched pair and one leaking cylinder affects the whole swing function.

Stabilizer Cylinders

Stabilizer cylinders extend the outriggers to keep the backhoe stable when digging. There are two — left and right rear. They sit exposed to weather and jobsite abuse. Rods pit fast on stabilizer cylinders. Backhoe cylinder rebuild on stabilizers often includes rod replacement in addition to seal work.

Loader And Front Cylinders

Most backhoe loaders have a front-end loader with its own cylinders — loader arm lift cylinders (usually two, one per side) and bucket tilt cylinders. These take a lot of abuse from loading and materials handling. Backhoe cylinder rebuild on front-loader cylinders is the same as on a standalone loader — standard bench work.

Steering Cylinders

Two-wheel-steer backhoes have a single steering cylinder on the front axle. Four-wheel-steer machines have two — one front and one rear. Steering cylinders take low pressure but high cycle count. They usually don’t fail dramatically — they slowly develop leaks that show up as steering wandering or as visible oil at the axle. Steering cylinder rebuild is straightforward bench work.

Common Failure Modes

The three most common backhoe cylinder rebuild scenarios: rod seals leaking (visible oil), piston seals blown (drift under load), rod pitting (recent seal replacement that failed quickly because the underlying rod is damaged). Every rebuild inspects for all three and addresses whatever is wrong.

Cost And Turnaround

Standard backhoe cylinder rebuild runs $400-$800 per cylinder for stabilizer, swing, and bucket cylinders. Dipper and boom cylinders run $600-$1,200. Add $400-$1,000 if a rod needs re-chroming. Add $200-$600 for barrel work. Multi-cylinder rebuilds (customer bringing in 3-4 cylinders at once) get bundled pricing. Turnaround is 5-10 business days for standard rebuilds, longer if rod re-chroming is required.

Bench Pressure Testing

Every backhoe cylinder rebuild is pressure tested at the machine’s rated operating pressure — typically 2,800-3,500 psi. Extend, retract, and hold soak. Cylinders that fail on the bench don’t ship.

Independent Scope

We are not a Case, Deere, Cat, or Kubota dealer. We don’t do warranty work. If your backhoe is under warranty, use the dealer network for warranty items. Out-of-warranty backhoe cylinder rebuild is what we do every week — faster and less expensive than dealer service.

Central Iowa Coverage

Our shop is in Ames, 30 minutes north of Des Moines. Backhoe cylinder rebuild customers come from all over central Iowa — Ankeny, Boone, Story City, Marshalltown, Nevada, and further. Contractors within roughly 60 miles of Ames get free pickup and delivery on machines. Cylinders ship well by freight from anywhere in the Midwest.

Common Questions About Backhoe Cylinder Rebuild

Do I need to bring the whole backhoe or just the cylinder? Either works. Most customers pull the cylinder in the field and bring or ship it. If pulling is a hassle, bring the machine in and we’ll pull, rebuild, and reinstall.

Can you rebuild all cylinders on the machine at once? Yes. Multi-cylinder backhoe cylinder rebuild jobs get bundled pricing. Common on machines with 4000+ hours where the whole system is due.

Do you rebuild swing cylinders individually or as a pair? We recommend rebuilding both swing cylinders together because they work as a matched pair. One rebuilt and one worn creates uneven swing performance.

What about stabilizer cylinders that get bent from operators using them on rough ground? Bent rods can sometimes be straightened, but often they need replacement. We evaluate case by case. Bent barrels are usually beyond backhoe cylinder rebuild scope and require replacement.

Do you warranty the rebuild? Yes. Every backhoe cylinder rebuild is warranted against seal defects and workmanship for 6 months.

Get A Quote

Call or text 515-292-2599. Tell us the backhoe make and model, which cylinder is leaking, and what it’s doing (dripping, drifting, slow). Text a photo of the cylinder and the leak. We’ll ballpark the backhoe cylinder rebuild cost over the phone.