31312741 crankshaft for Perkins 3.152 2.5L. Fits Massey Ferguson 135 Classic & Fordson Dexta. Spheroidal graphite iron. Fleet supply and export
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This 31312741 crankshaft is a premium direct-fit core engineered for the naturally aspirated 3-cylinder Perkins 3.152 and D3.152 (2.5L) diesel engines with rope seal spec. Manufactured from ductile iron crankshaft castings with induction hardened journals, it fits perfectly on Perkins crankshaft applications like the Massey Ferguson 135 Classic and Fordson Dexta.
Fleet supply and export.
Our premium aftermarket Perkins 3.152 crankshaft delivers the torsional strength and fatigue resistance required by classic agricultural tractors and heavy industrial generator plants. Engineered in strict alignment with Perkins’ legendary off-highway standards—trusted worldwide as the heart of every great machine for agricultural tractor parts and industrial power applications—our crankshafts restore original engine torque. Optimized for the 2.5L naturally aspirated 3-cylinder engine, this shaft directly replaces the OEM Massey Ferguson 135 classic block and Fordson Dexta crank engines (MF 135 crankshaft). Whether overhauling a D3.152 crankshaft, restoring a vintage Massey Ferguson 35, or maintaining stationary Lincoln Welders and industrial water pumps, our crankshaft preserves factory alignment.
Continuous operation of tractor engines under low-RPM PTO loads subjects the crankshaft to massive torsional flexing, increasing fatigue fracture risks. Furthermore, incorrect seal matching can cause massive engine oil leakage when an older rope seal crankshaft is misaligned inside a modern lip seal block. To resolve these classic field failures, our Perkins crankshaft wholesale selection features high-strength nodular cast iron strength. Formulated with a spheroidal graphite structure (ductile iron crankshaft) and finished with dynamic balance precision spinning and induction hardened journals (minimum journal hardening HRC 50), our shafts resist wear and structural cracking over decades of active field operations.
| Parameter | Value |
|---|---|
| Engine Type | Perkins 3.152 / D3.152 (3 cylinder natural aspiration) |
| Rear Oil Seal Type | Rope seal crankshaft (knurled oil return helix thread) |
| Material Composition | Ductile iron (Nodular cast iron strength & flexibility) |
| Primary OEM Part Number | 31312741 |
| Cross References | ZZ90011 cross reference, 31312743, 31312742 |
| Journal Hardness | induction hardened journals (journal hardening HRC 50 minimum) |
| Balancing Standard | dynamic balance precision 100% spin balanced |
Our manufacturing facilities support a complete range of low-wear Perkins crankshafts and bearings. Browse our Perkins crankshaft range to find additional components, replacement main bearings, rod journals, piston sets, and complete overhaul gasket sets for different tractor platforms.
| Engine Model | Primary Part Number | Cross Ref Part Numbers | Compatible Machine Model |
|---|---|---|---|
| ZZ90082 | 31315843, 31312739 | Massey Ferguson 165 | |
| ZZ90008 | 31312718, 31312714 | Massey Ferguson 65 | |
| 3.152 / D1-2100 | 31312741 | ZZ90011, 3.152 Rope | Massey Ferguson 135 Classic |
| 3.152 / D3.152 | ZZ90013 | 31312741, D3.152 Lip | Massey Ferguson 240 |
| 404 | ZZ90236 | 115256950, 404C-22, 404D-22 | Cat 302.4 |
This 31312741 Perkins AD3.152 crankshaft is a direct-fit component calibrated for various high-torque agricultural tractors, stationary welders, and industrial power units:
| Make | Machine Model | Year Range | Engine Model | Application |
|---|---|---|---|---|
| Massey Ferguson | MF135, MF35, MF150, MF230 | 1964–1983 | Perkins AD3.152 (Massey Ferguson 135 classic) | Agricultural Tractor Field Operations |
| Fordson | Fordson Dexta (Perkins Conversion) | 1958–1964 | Perkins 3.152 (Fordson Dexta crank) | General Purpose Utility Farming |
| Lincoln Electric | SA-250, Classic 300D Welders | 1978–1998 | Perkins D3.152 Engine Platform | Industrial Pipe Welding & Standby Power |
| Sulzer | 6-Inch Stationary Irrigation Pumps | 1965–1995 | Perkins 3.152 Engine | Agricultural Irrigation & Flood Drainage |
As a premier industrial engine component manufacturer and direct alternative to a regional UK Perkins parts supplier, we provide micro-balanced SG iron crankshafts built to extend classic tractor parts durability:
The operational difference lies in the rear oil seal design of the crankshaft flange. Earlier Perkins 3.152 and D3.152 engines utilize a rope seal crankshaft (OEM 31312741, ZZ90011 cross reference), which features a knurled oil return thread (spiral helix groove) on the rear main journal flange. This helix actively pumps engine oil back into the crankcase as the shaft spins. Later blocks are designed for a lip seal, requiring a completely smooth, mirror-polished rear journal surface. They are not interchangeable; mixing them up causes immediate, severe oil leaks.
Agricultural tractors (Massey Ferguson 135 classic) operate under continuous heavy PTO loads, subjecting the crankshaft to massive torsional flexing. Standard grey cast iron is brittle and prone to cracking at the journal fillets. Our shafts utilize premium ductile iron crankshaft technology, where graphite is formed into spheroidal nodules (nodular cast iron strength). This metallurgical structure absorbs heavy rotational shock loads and resists fatigue fracture, ensuring reliable service over decades of active field operations.
During installation, clean the parent bores and main caps. Lubricate the fresh bearing shells with clean engine oil and lower the crankshaft into place. Tighten the main caps progressively in three stages, working outwards from the center cap. The final torque specification is 150 Nm (110 ft-lbs). Always verify axial end-float clearance (thrust play) using a dial indicator; standard clearance should be between 0.05 mm and 0.38 mm to prevent crankshaft binding.
Rapid wear on main and rod journals is a major concern. To protect against abrasive particle wear, all of our Perkins 3.152 crankshafts undergo electronic induction hardened journals processing, reaching a verified hardness of HRC 50-55 on all nose and journal surfaces. Rebuilders can verify this hardness depth using Ultrasonic Contact Impedance (UCI) testing, ensuring a durable, wear-resistant surface that supports standard copper-lead bearing shells.
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Custom Crankshaft manufacturing available based on samples or drawings. Fleet supply and export.
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