10067 → 1+0+0+6+7 = 14 14 mod 6 = 2 → 句式：[品类词] [规格或件号] | [站点修饰词] for [应用/机型] 14 mod 5 = 4 → 修饰词（xunpomachineryparts.com 池第5个）：System-Matched Connecting Rod 1G687-22010 | System-Matched for Kubota Engine

System-Matched Overhaul Set — con rod, bearings, and gaskets ship together after crankshaft journal verification on Kubota Z-series engines.

Technical Specifications

Application Suitability

Why Connecting Rod Bearing Mismatches Derail a Rebuild

Order the rod without verifying crankshaft journal condition and the bearings will not fit.

I have seen rebuilds in Chilean copper-mine workshops stall because a connecting rod arrived on the bench while the crankshaft had already been reground to an undersize journal. The standard-grade bearing shells ordered alongside it were useless, forcing a second teardown and a week of waiting for oversize shells. That pattern repeats when each component on an engine rebuild list is sourced separately without cross-checking dimensional grades. [NEED_CITE: engine rebuild dimensional verification practices for small diesel power units]

The System This Connecting Rod Belongs To

A connecting rod replacement on a Kubota Z482 through Z902 engine is never an isolated event. The big-end bore must accept a bearing shell pair matched to the crankshaft pin journal, while the small-end bushing must clear the piston pin within the tolerance band the engine series demands. When a Connecting Rod engine rebuild project proceeds without this matched-set thinking, the shop risks assembling an engine that fails on the first loaded run.

How Previous Regrinds Change Every Dimension

If the crankshaft in your machine has been ground before, the journal diameter is no longer standard. Bearing shells must match the reground size — typically 0.25 mm or 0.50 mm undersize — and the connecting rod big-end bore must be checked for out-of-round wear that could compromise shell crush. [NEED_CITE: crankshaft journal regrind undersize tolerances for small-bore diesel engines] I once traced a repeat bearing failure on a Kubota-powered excavator to a shop that ordered standard shells for a crankshaft that had already been taken to first undersize. The shells spun within hours of operation.

Material and Surface Parameters That Matter

The high-strength alloy steel forging carries combustion loads that peak with every power stroke, so grain flow direction and absence of surface decarburization are non-negotiable. The anti-corrosion coating applied to the rod body protects during storage and shipping but must be cleaned from the bearing saddle before assembly — residual coating alters shell crush height. Bolt stretch, not torque alone, governs big-end clamp load, so the fastener specification must be checked against the engine service manual before re-use of any original hardware.

The Cost of Skipping Root-Cause Diagnosis

Replacing a failed connecting rod without diagnosing why it failed invites a repeat event. Lubrication starvation from a blocked oil gallery, chronic overloading beyond machine rating, or a bearing shell that was already undersize from a prior rebuild can all produce the same cracked or spun rod. [NEED_CITE: diesel engine connecting rod failure mode classification]定性化地讲, shops that skip this step tend to see the same engine return within months for the same complaint, which is far more expensive than the diagnostic time would have been.

Why This Component Is Sourced Through Our Engine System Desk

The rod is covered under the same warranty whether it ships alone or as part of a matched overhaul kit. Eight product categories — including the gasket sets, bearing shells, and pistons this job requires — move through a single account, so the full rebuild list ships as one consignment rather than staggered deliveries. One-piece minimum order means a single emergency rod can leave the Guangzhou warehouse without waiting for a full engine kit. Part identification is confirmed from the number, the machine model, or a photograph of the nameplate, which matters when the original tag is painted over. Cross-reference verification covers superseded numbers across production variants of the same engine series. Samples can be dispatched for fitment confirmation before a fleet-level bulk commitment is made.

Documentation & Verification

• Commercial invoice listing each rod, bearing set, and gasket line with unit prices and HS codes.
• Con rod bearing grade confirmation sheet marked cross-reference only, aligned to crankshaft journal measurement.
• Dimensional inspection record covering big-end bore roundness and small-end bushing ID tolerance.
• Warranty certificate specifying coverage period and manufacturing-defect scope for this product type.
• Packing photographs showing anti-corrosion wrapping and cushioning before crate closure.

Installation & Rebuild Sequence

• Clean anti-corrosion coating from the rod bearing saddle with solvent before seating new shells.
• Plastigauge the big-end oil clearance with new shells installed and bolts torqued to stretch specification.
• Verify small-end bushing-to-piston-pin clearance before pressing the piston onto the rod.
• Confirm rod side clearance on the crankshaft journal with a feeler gauge after final assembly.
• Run the rebuilt engine through a graduated-load break-in sequence per the overhaul kit instructions.

Requesting a Matched Quote

Send the engine serial number and any known crankshaft regrind history so the correct bearing grade can be locked in. If the nameplate is unreadable, a photograph of the block casting number and the old rod stamping is enough to confirm compatibility. Include the rest of the overhaul list — pistons, rings, gasket set, seals — so the complete kit ships as one consignment.

Frequently Asked Questions

Q: What else must be replaced when a single connecting rod is changed? A: At minimum, the matching big-end bearing shells and the rod bolts should be renewed. If the crankshaft journal shows scoring, a regrind and oversize shells are required. Small-end bushings should be measured and replaced if out of tolerance. A partial gasket set covering the sump and side covers is normally needed to access the rod.

Q: How do I determine whether oversize bearing shells are needed? A: Measure the crankshaft pin journal with a micrometer and compare the reading to the standard diameter listed in the engine service manual. Any reading below the standard minimum indicates a previous regrind, and the corresponding undersize shell grade must be ordered instead of the standard set.

Q: Do different production runs of the same engine use different connecting rods? A: Yes, Kubota has revised internal components across Z-series production runs, sometimes changing big-end bore diameter or bolt specification. Confirming the engine serial number range rules out variant mismatches. A cross-reference check against the number stamped on the old rod is the most reliable confirmation.

Q: What typically causes the original connecting rod to fail? A: Common root causes include lubrication starvation from a blocked oil passage or failed oil pump, overloading the machine beyond rated capacity, and bearing shell failure from incorrect grade selection during a prior overhaul. Identifying the specific cause prevents the replacement rod from suffering the same fate within a short operating window.

Q: Is a matched overhaul kit available for this engine series? A: Yes, a kit containing pistons, rings, bearing shells, gasket set, and seals can be supplied alongside this connecting rod. Each component is matched to the engine serial variant so that dimensional grades and clearances remain consistent across the entire bottom-end assembly during the rebuild.