Connecting Rod 115026330 | Matched Set for Shibaura N844 New Holland

Matched Rotating Assembly Supply — Each connecting rod is verified against engine serial variants and supplied with matched piston sets and bearing grades to ensure correct clearances during Shibaura N844 rebuilds.

Technical Specifications

Application Suitability

Engine Rebuild Mistakes That Cause Repeat Failures

Confirm the crankshaft journal condition and engine serial before ordering any internal components.

When a workshop tears down a Shibaura N844 engine and finds a damaged connecting rod, the immediate reaction is often to replace that single rod. However, the system conditions that destroyed the rod—oil starvation, bearing shell spin, or overloading—usually leave secondary damage across adjacent components. Installing a new rod without verifying the crankshaft journal surface or replacing the matched bearing shells frequently leads to another failure within the first operating cycle [NEED_CITE: diesel engine rotating assembly failure root cause analysis]. A replacement connecting rod must be part of a verified system repair, not an isolated swap.

System Position and Component Relationships

This connecting rod operates within the block and internal rotating assembly of the Shibaura N844 2.2L engine family. It transfers combustion force from the piston to the crankshaft, meaning its big-end bore must match the crankshaft journal diameter precisely while the small-end bore aligns with the piston pin specification. During a connecting rod engine rebuild replacement, the rod never works alone; it depends on piston assemblies that match its weight class and con rod bearings that provide correct oil film clearance.

Serial Variants and Bearing Grade Selection

The N844 engine family includes the N844, N844L, and N844LT-C variants, and differences in production serial ranges affect rod bolt thread specifications and big-end bore dimensions. If the crankshaft has been reground during a previous overhaul, standard size bearing shells will leave excessive clearance, causing knock and rapid wear. The correct approach is to measure the journal diameter and select bearings available in STD, 0.25, and 0.50 oversize accordingly. This connecting rod engine rebuild replacement must account for that regrind history [NEED_CITE: crankshaft journal regrind tolerance standards for compact diesel engines].

Material and Tolerance Parameters in Practice

The forged steel construction provides the fatigue strength necessary for the cyclic loading in a 2.2L diesel combustion chamber. Heat treatment to HRC 30–35 balances surface hardness with core toughness, preventing both rapid wear at the bearing interface and brittle fracture under shock loads. The ±0.02mm dimensional tolerance on critical bores ensures that when paired with matching piston assemblies and correctly graded bearings, the assembled rotating group stays within the engine builder's specified clearance range without selective fitting.

The Cost of Ignoring Root Cause

Replacing a failed connecting rod without diagnosing the oil feed system or checking the remaining rods for bending often results in the new rod failing in the same way. A machine that returns to the site with repeat bottom-end noise burns through more operating hours in diagnostic downtime than it would have with a complete rotating assembly overhaul. Workshops that address only the visible damage accumulate repeat comebacks that erode customer confidence and increase warranty costs across the year [NEED_CITE: mobile equipment engine warranty claim recurrence patterns].

Supply Capability for System-Level Orders

Our own production lines and qualified sourcing partners operate under the same warranty terms, so a mixed-order of self-produced and sourced engine internals carries uniform accountability. Eight product categories allow a complete N844 overhaul job list to ship as one consignment from a single account. Orders start from one piece, removing the minimum order barrier for a workshop repairing a single machine. The Guangzhou warehouse holds common rotating assembly components for prompt dispatch. Part identification is available from the part number, machine model, photograph, or nameplate image when the stamping is worn. Cross-reference verification covers superseded and alternate numbers to catch listing errors before the package ships.

Documentation & Verification

• Commercial invoice listing each matched component by part number and quantity
• Part compatibility sheet confirming fitment to the specific N844 serial variant (reference only)
• Dimensional inspection record showing big-end and small-end bore measurements
• Warranty terms document covering manufacturing defects for the stated period
• Packing photographs showing the rod and matched components before crate closure
• HS code documentation for customs clearance in destination markets

Installation & Rebuild Sequence

• Clean block galleries thoroughly before inserting the new connecting rod to prevent debris scoring
• Verify con rod bearing grade matches the measured crankshaft journal, not the previous build record
• Torque rod bolts to specification in stages and check big-end side clearance after tightening
• Confirm piston-to-valve clearance if the cylinder head has been resurfaced during the same overhaul
• Run initial start-up at low load and monitor oil pressure for the break-in period

Quotation and Identification Request

Provide the full engine model, serial number, and any crankshaft regrind history to ensure the connecting rod, bearing grade, and piston set are correctly matched. If the nameplate is unreadable, a clear photograph of the engine block casting number and any visible stamping on the existing rod allows our technical team to verify compatibility and cross-reference accuracy before confirming the order.

Frequently Asked Questions

Q: What other components should be replaced together with the connecting rod during an overhaul? A: During a full overhaul of the N844 engine, the connecting rod should be replaced alongside matched piston assemblies, piston rings, con rod bearings, main bearings, thrust washers, and a full gasket set. Retaining old bearings or mismatched piston weights disturbs the rotating balance and oil clearances, leading to early repeat failure even if the new rod itself is dimensionally correct.

Q: How do I determine the correct oversize bearing grade if the crankshaft has been reground? A: The only reliable method is to measure the crankshaft connecting rod journal diameter directly with a micrometer. Previous rebuild records may not reflect the actual state if the crankshaft was machined further during the current teardown. Once measured, select bearings from the available STD and oversize grades to achieve the oil clearance specified for the Shibaura N844 family.

Q: Are connecting rods identical across all N844 engine serial variants? A: No. The N844, N844L, and N844LT-C variants can differ in rod bolt thread pitch, big-end bore specification, and overall weight class across production serial ranges. Supplying the full engine serial number allows verification that the replacement rod matches the specific build rather than relying solely on the base model designation.

Q: What system conditions could have caused the original connecting rod to fail? A: Common root causes include oil starvation from a failing oil pump or clogged gallery, bearing shell spin from insufficient crush height, overloading beyond the engine design rating, or coolant intrusion from a failed liner seal. Identifying and correcting the underlying cause before installing the replacement rod prevents the new component from suffering the same failure mode.