Detailed Product Introduction
This drilling engine parts collection covers all mission-critical subsystems of 131-series and ECN-series power units: disc piston engines, shock absorbers, pressure/safety valves, hydraulic transmissions, crosshead bodies, valve covers, bearings, connecting rods, pistons, seals, flanges, servomotors, and lubrication components. Each item is cross-referenced to original OEM part numbers (131-series, ECN-series, 685-series) and international manufacturing standards, ensuring perfect drop-in fit and consistent performance with factory engine assemblies.
The parts are curated to address high-wear failure points of drilling engines, including pressure control valves, piston assemblies, hydraulic transmissions, and sealing components. All pressure-rated parts are hydrostatically tested to meet maximum operating pressure requirements, while load-bearing components use hardened alloy steel for maximum wear and impact resistance in harsh drilling conditions.
Functional Performance & Value Highlights
- Minimize Engine Downtime: OEM-matched precision parts cut repair and replacement time by 55%, eliminating costly drilling delays caused by power unit failures.
- High-Pressure Sealing Reliability: ISO 3601-certified O-rings and gasket sets maintain zero-leak performance at pressures up to 52.5MPa, preventing fluid loss and pressure drops.
- Extended Component Lifespan: Heat-treated bearings, forged connecting rods, and precision pistons resist fatigue and abrasion, doubling the service life of generic aftermarket parts.
- Simplified Sourcing & Inventory: Consolidated parts list covers all core engine subsystems, reducing supplier fragmentation and streamlining maintenance inventory management.
Structural & Engineering Features
- Model-Specific Drop-In Fit: Exact replacements for 131-series and ECN-series engine components, no custom machining or modification required for installation.
- Standardized Compliance: Seals adhere to ISO 3601/1-2000, pressure valves meet industrial high-pressure testing norms, and fasteners comply with global industrial machining standards.
- High-Load Durable Materials: Precision roller bearings, forged steel connecting rods, and wear-resistant pistons withstand continuous heavy-load engine operation and vibration.
- Subsystem Grouping: Parts organized by piston assembly, pressure control, hydraulic transmission, lubrication, and sealing systems for targeted sourcing and troubleshooting.
Applicable Operating Conditions
These 131-series & ECN-series engine parts are engineered for harsh drilling and industrial power environments where reliable engine performance is critical, including:
- Onshore land drilling rigs with continuous heavy-load engine operation
- Offshore drilling hydraulic power units with high-pressure fluid demands
- Mud pump drive engines with extreme vibration and temperature fluctuations
- High-pressure hydraulic systems operating up to 52.5MPa / 485bar
- Remote drilling sites with dust, moisture, and limited maintenance access
Professional Maintenance & Troubleshooting Recommendations
- Pre-Installation Inspection: Verify part numbers against OEM specs, check for surface defects, and confirm dimensional accuracy to ensure pressure integrity and fit.
- Torque Specification Adherence: Use calibrated torque tools for flange and fastener installation to maintain proper sealing and prevent component loosening under vibration.
- Seal Replacement Protocol: Replace all O-rings and gaskets during component installation, using only ISO 3601-certified seals to avoid leaks.
- Pressure Testing Compliance: Conduct hydrostatic pressure testing on valves and servomotors post-installation to confirm rated pressure performance.
- Scheduled Wear Checks: Inspect bearings, pistons, and connecting rods every 2,000 operating hours; replace worn components before catastrophic failure occurs.
We supply the following spare parts:
Shock absorber ripple 614.14-01.00.59.0 – 6 piece
Engine with a disc piston 131.08-00.00.00.0 – 1 piece
Engine with a disc piston 131.08-00.00.00.0 – 1 piece
Engine with a disc piston 131.08-00.00.00.0 – 3 pieces
Discography 685.35-02.00.51.0 – 6 piece
Pressure valve 131.07-00.00.00.0 – 1 piece
Pressure valve 131.07-00.00.00.0 – 1 piece
Pressure valve 131.07-00.00.00.0 – 3 pieces
Safety valve 3 1/16×52.5 MPa /D-60mm ESN.41-00. 00. 0-1 pcs.
Safety valve 3 1/16×52.5 MPa /D-60mm ESN.41-00. 00. 00. 0-2 pieces
Key ECN.25-01. 53. 00. 0-1 piece
Circular ring 53017000 SR ISO 3601/1-2000 – 36 piece
Hydraulic transmission ECN.31-01.00. 01. 1 complete with O-rings and fasteners. – 8 pieces
Hydraulic transmission ECN.31-01.00. 01. 1 complete with O-rings and fasteners. – 2 pieces
Housing ECN.43-01.00. 01. 0 complete with O–rings and fasteners. – 12 pieces
Crosshead body ECN.31-02. 00. 45. 1-3 pieces
ECN suction valve cover.38-01.17.00. 0 – 6 pieces
ECN discharge valve cover.38-01.26.00. 0 – 6 pieces
ECN support valve.38-01.43.00. 0 – 6 pieces
Pipe (swivel connection) 1/2″ 131.14-00.00.00.0 – 2 pieces
Pipe (swivel connection) 1/2″ 131.14-00.00.00.0 – 2 pieces
Pipe (swivel connection) 1/2″ 131.14-00.00.00.0 – 6 piece
Bearings 698, 5x1016x133, 35 275rit808-3 pieces
Connecting rod bearing head 150x270x88,9 × 150ru92 – 6 pieces
Piston 824.0016-12.00.0 – 4 pieces
Gasket ECN.41-00.00.13. 0-10 pieces
Valve cover gasket 617.17-01.35.00.1 – 60 piece
The distributor is two-line 131.15-00.00.00.0 – 1 piece
The distributor is two-line 131.15-00.00.00.0 – 3 pieces
The distributor is two-line 131.15-00.00.00.0 – 1 piece
Oil seal assembly ECN 31-02. 31. 00. 1-9 sets
Oil seal assembly ECN 31-02. 31. 00. 1-6 sets
Servomotor 50×80 131.66-00.00.00.1 – 1 piece
Servomotor 50×80 131.66-00.00.00.1 – 1 piece
Servomotor 50×80 131.66-00.00.00.1 – 3 pieces
Oil suction filter 617.02-04.65.00.0 – 2 pieces
Threaded flange 685.06-01.00.22.0 complete with O–rings and fasteners. – 12 pieces
Threaded flange 685.06-01.00.22.0 complete with O-rings and fasteners. – 2 pieces
Threaded flange 685.06-01.00.25.0 complete with O-rings and fasteners. – 2 pieces
Threaded flange 685.06-01.00.25.0 complete with O–rings and fasteners. – 12 pieces
Safety pin for pressure 260 bar ECN 41-00.23.01.0 – 10 pieces
Safety pin for pressure 277 bar ECN.41-00.23.02. 0-10 pieces
Safety pin for pressure 297 bar ECN 41-00.23.03.0 – 10 pieces
Safety pin for pressure 485 bar ECN 41-00.23.08.0 – 10 pieces
Rod piston 685.06-01.00.37.0 – 12 piece
Intermediate stock ECN 31-01.00.35.0 – 9 pieces
On-Site Engine Fault Repair Cases
Case 1: High-Pressure Safety Valve Failure
A 131-series drilling engine experienced dangerous pressure spikes due to a faulty 52.5MPa safety valve (ESN.41-00). Replacing the defective valve with an OEM-matched unit from this catalog restored proper pressure regulation, preventing engine damage and resuming drilling operations within 2 hours.
Case 2: Hydraulic Transmission Leakage
An ECN-series engine lost hydraulic power due to severe transmission leaks, traced to worn O-rings and a damaged hydraulic transmission assembly (ECN.31-01). Swapping the transmission and replacing all sealing components fixed the leak, restoring full hydraulic power to the rig.
Case 3: Piston & Bearing Wear Failure
A disc piston engine (131.08) suffered reduced power output and abnormal noise from worn piston bearings and connecting rod bearings. Replacing the 698-series bearings and connecting rod bearing heads with certified parts restored engine performance and eliminated mechanical noise.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible only with 131-series and ECN-series engines? | Yes, these parts are exclusively designed and sized for 131-series and ECN-series industrial drilling engines. They are not guaranteed to fit other engine models due to unique dimensional and pressure-rated design differences. |
| Do the safety valves and pressure pins meet the rated drilling pressure standards? | Absolutely. All safety valves (up to 52.5MPa) and pressure pins (260-485bar) are factory-tested to meet industrial high-pressure norms, ensuring safe and reliable pressure control for drilling engines. |
| Can I purchase individual parts for minor repairs, or only full engine overhaul kits? | Parts are available for individual subsystem purchase (piston, valve, transmission, sealing) to target specific repairs; bulk overhaul kits are also offered for complete 131/ECN-series engine refurbishment. |
Procurement Guidance
For drilling maintenance teams, power unit supervisors, and procurement specialists managing 131-series and ECN-series engines, this parts list is the definitive resource to reduce downtime, ensure pressure safety compliance, and source guaranteed OEM-compatible components. Avoid the risks of substandard generic parts, costly engine failures, and delayed drilling operations — this catalog serves as both a standardized procurement blueprint and technical repair reference for all critical engine systems.
Secure these precision drilling engine parts to execute fast, durable field repairs, maintain uninterrupted power unit performance, and uphold the highest industrial safety and quality standards. Each component is built to withstand the rigors of heavy-duty drilling operations, making this the trusted choice for keeping your 131-series and ECN-series engines operating efficiently and reliably.
