Hydraulic cylinder repair quotes, drafted from the teardown sheet your technician already filled in.

A teardown sheet gets written at the bench. It holds the tag or part number, bore, rod and stroke, the seal kit called for, what the rod and tube looked like, and notes on the gland, the piston and any mounts. The quote has to carry all of that in a buyer's terms: what was found, what gets replaced or reworked, the parts and labor lines, and whether a rebuild or a new cylinder is on offer.

For the test, AI reads copies of those sheets and drafts the quote, with parts and labor lines drawn from the records you sent and every open question kept on the page. It doesn't decide whether a rod is reusable, whether a tube can be honed, or whether a cylinder can go back on a machine. A qualified person on your team makes those calls and checks every repair recommendation.

Buyers want each line priced and hold you to it. Miami-Dade County's request to qualify for hydraulic repairs asks for an itemized written fixed price within 24 hours, with all parts, labor and hourly rates and each item priced individually, and says lump sum estimates are not acceptable. The county shows vendors the equipment and gives no detailed description of the work, and each vendor states in writing how many days the repair will take. If more parts or labor turn up after award, the department hears within 24 hours, nothing proceeds until someone authorizes it, and the cost goes on a separate invoice labeled authorized additional work. So the draft keeps what the teardown found apart from what is still unknown.

Rod and tube findings carry a decision inside them. A January 2004 Machinery Lubrication repair article checks rod straightness on rollers with a dial gauge, reads chrome that is dull on one side and polished on the other as a bent rod, and says badly pitted or scored chrome means the rod gets rechromed or replaced. It calls a new piston seal in a barrel that has bulged or worn oversize a short-term fix, and ties a badly distorted rod seal to a worn guide bush or a bent rod. It also gives limits for the bore and the head in thousandths of an inch. Those are one author's figures. The draft carries your technician's words and readings and applies no limit of its own.

Sizes and seal kits are easy to get wrong from the old parts. The same article warns against measuring old seals when ordering, because seals shrink or swell in service and a wrong one may have gone in at the last repair, and it says to give the supplier the groove sizes. One cylinder maker's measuring guide says to read an oval pin hole at its unworn section and to take bore from the inside of the tube or the outside of the piston head. The draft shows where each size came from, a tag, a part number, a groove measured or the old seals, and raises a question when two sources disagree.

A cylinder rarely arrives as just a tube and a rod. New Jersey DOT's movable bridge scope lists cap bolts, test ports, manifolds, valves, hoses, rods, rod seals and linear displacement transducers under the cylinders, with spherical plain bearings at the rod and blind ends. Wisconsin's bridge form asks yes or no whether rods are scored, rod seals are leaking, pedestals are in poor condition or lines leak at the cylinder. Florida DOT's procedure says not to take hydraulic and pneumatic systems apart during an inspection without its district structures maintenance engineer's approval, so whether a unit was actually opened belongs on the quote. Construction matters too: a tie-rod cylinder can be unbolted on the shop floor, a welded one gives up its piston through the front head gland, and one maker's repair guide shows heads held by wire rings, set screws, locking rings or threads.

Standards stop at the mounting, and your reviewer reads for the rest. ISO 6020-1 sets metric mounting dimensions for 16 MPa medium series single rod cylinders so common ones can be interchanged, round heads from 25 to 200 millimeters bore. ISO 6020-3 covers 250 to 500 and applies only to dimensions, and ISO 6099 codes the mounting types. Whether a new cylinder bolts up depends on those, so the draft reports what the sheet shows and claims no fit. Miami-Dade's 2008 bid wanted rebuilt equipment as like new, performing to the manufacturer's original design specifications, with separate warranty days for parts and for workmanship, and the draft gives each its own line. OSHA's lockout fact sheet names hydraulic and pneumatic energy, and removing a cylinder stays with the plant's and your shop's procedures. None of this is legal or engineering advice. Your reviewer, usually the shop manager or a senior technician, checks that no finding was softened and that nothing reads as a promise the cylinder is fit to run.

When your reviewer says yes against the success criteria, new teardown sheets go through the same drafting for about 30 days.

A qualified person checks every repair recommendation, settles every open item and approves each quote before it posts anywhere or reaches a buyer.

A fixed price, shown before you sign, covers that month. Whatever comes after is priced as its own job, with monthly support if you want it.