Frequently Asked Questions

Cast-iron can absolutely be welded with proper technique, though it requires specialized skills due to its brittleness. Pre-heating and controlled cooling prevent further cracking. At J & L Machine & Welding, we work extensively with cast-iron to repair rather than replace expensive equipment parts.

Signs indicating repair is possible include slow operation, minor leaks at seals, and drifting under load. If the cylinder barrel is scored, the rod is bent, or there's catastrophic seal failure, assessment by a specialist determines whether rebuilding is cost-effective compared to replacement.

Contaminated fluid is the leading cause, followed by running low on hydraulic oil, overheating, and cavitation from air in the system. Regular fluid changes and filter maintenance significantly extend pump life. Our experience shows most pump failures we repair stem from deferred maintenance.

Balancing is the first step when you notice vibration or unusual noise, as imbalance from dirt buildup, wear, or loose components is often the culprit. Balancing costs a fraction of replacement and restores smooth operation. Only replace fans when blades are physically damaged or corroded beyond repair.

Milling removes material to create shapes, slots, and features using rotating cutting tools. Surface grinding achieves mirror-smooth finishes and tight tolerances by removing tiny amounts with an abrasive wheel. J & L Machine & Welding uses both techniques depending on whether you need shaping or precision finishing.

Yes, and timing is critical during peak seasons. Welding repairs for cracked frames, broken hitches, or worn components can often be completed same-day to minimize downtime. Having a local repair specialist familiar with farm equipment means faster turnaround than ordering replacement parts.

Stainless steel conducts heat differently and is prone to warping and carbide precipitation (which reduces corrosion resistance) if welded improperly. Lower heat input, proper filler metals, and back-purging with argon preserve the material's properties. Not all welders have experience with stainless, so verify before committing.

Bring blueprints, technical drawings, or even the damaged original part. Include material specifications, required tolerances, and quantity needed. J & L Machine & Welding recommends discussing the part's application so their specialists can suggest optimal materials or design modifications.

A properly rebuilt hydraulic cylinder with quality seals and honed bore surfaces should last as long as the original-often 5-15 years depending on application and maintenance. The key is addressing root causes like contamination and using correct replacement seals rated for your operating pressures and temperatures.

Internal wear on gears or vanes, damaged bearings, and worn seals all reduce efficiency gradually. Contaminated fluid accelerates this wear. If your motor runs hot or requires higher pressure to achieve the same output, it likely needs professional inspection and repair before complete failure occurs.

For equipment where OEM parts are discontinued or expensive, custom fabrication often makes more sense. A skilled machinist can manufacture keyways, shafts, brackets, and specialty components to original specifications. This keeps vintage equipment operational without compromising performance.

Cold temperatures thicken hydraulic fluid, increasing strain on pumps and slowing cylinder response. Using winter-grade fluid and allowing proper warm-up prevents seal damage and pump cavitation. If equipment sat unused in cold storage, have seals inspected before heavy spring use to catch cold-weather damage early.