Product Introduction
Our Gardner Denver PZ-7 lubrication system parts are premium OEM-equivalent components designed to maintain optimal lubrication for the PZ-7 mud pump’s high-load moving parts. The comprehensive lineup covers three core sub-systems: piston lubricating pumps, main oil pumps, and full lubrication piping/accessories. Crafted from corrosion-resistant cast iron, heat-treated steel, oil-resistant elastomers, and precision-machined alloys, all parts meet strict API 7K standards for drilling pump equipment, ensuring leak-free operation, consistent oil flow, and reliable performance in extreme field environments. The system includes thermostatic valves, heat exchangers, and filters to regulate oil temperature and purity, critical for prolonging pump life.
Functional Specifications
- Consistent Lubrication Delivery: Maintains a steady 10–60 PSI oil pressure to bearings, pistons, and gear assemblies, eliminating dry running and premature component failure.
- Efficient Oil Filtration: High-capacity oil filters remove 99% of abrasive contaminants down to 10 microns, keeping lubricating oil clean and extending oil service intervals by 25%.
- Temperature Regulation: Thermostatic valves and heat exchangers maintain optimal oil operating temperature (160–180°F), preventing oil breakdown and viscosity loss in extreme conditions.
- Leak-Free Sealing: Precision-machined gaskets, seals, and O-rings create vibration-resistant seals, eliminating oil leaks and maintaining system pressure.
- Modular System Compatibility: All parts are designed for direct interchangeability with OEM lubrication system hardware, supporting partial repairs or full system overhauls.
Structural Characteristics
These PZ-7 lubrication components feature a heavy-duty, field-optimized structural design: reinforced pump casings for impact resistance, precision-threaded piping and fittings for secure connections, self-locking fasteners to prevent loosening under vibration, and modular pump assemblies for easy disassembly and repair. The lubrication trough and targeted feed lines ensure uniform oil distribution to all critical wear points, while hose clamps and routing hardware keep lines secure and organized to prevent damage.
Applicable Operating Conditions
These components are engineered to perform reliably in the most demanding drilling environments: onshore oil/gas exploration, offshore platform well servicing, directional drilling, geothermal drilling, and remote land rig operations. They tolerate extreme temperature fluctuations (-20°F to 220°F), contaminated lubricating oil, high-vibration rig conditions, and prolonged exposure to dust and debris, making them suitable for harsh onshore and offshore drilling installations alike.
Maintenance & Servicing Recommendations
To maximize component lifespan and prevent lubrication system failures, follow these industry-approved maintenance protocols: replace oil filters (26C18, 3WAJ511) every 300 operating hours to prevent clogging; inspect all hoses, seals, and gaskets every 450 hours for cracks, hardening, or leaks, replacing damaged parts immediately; calibrate thermostatic valves (90K165) and relief valves (90AR28) quarterly to maintain proper temperature and pressure; flush the entire lubrication system and replace pump oil every 600 hours; torque all fittings and fasteners to OEM-specified values to prevent loosening; and clean oil screens and troughs monthly to remove sediment buildup.
- We supply the following spare parts:
| PISTON LUBRICATING PUMP | ||
| PUMP ASSEMBLY, Includes All Parts Shown | ||
| 1 | CASING | C1K2A1 |
| 2 | PLUG-SqHd PIPE | 64AA6 |
| 3 | COCK, Drain | 90C31 |
| 4 | IMPELLER ASSEMBLY, SHAFT SPIN | C1K1A1A |
| 5 | KEY | 35B4 |
| 6 | SEAL | 60BT11 |
| 8 | GASKET | 25D212 |
| 9 | FRAME | C1H4A2 |
| 10 | SCREW | 75A130 |
| 11 | BEARING-BALL (Inner) Includes Retaining Ring | 12AK3 |
| 12 | BEARING-BALL (Outer) Includes Retaining Ring | 12AK3 |
| OIL PUMP | 46C21 | |
| 1 | BODY | |
| 2 | HEAD | |
| 3 | CAP, End | |
| 4 | GASKET | 2010024 |
| 5 | KEY, Drive | |
| 6 | BEARING, Shaft | 2010025 |
| 7 | RING, Snap | |
| 8 | BEARING, Thrust | 2010026 |
| 9 | RING, Snap | |
| 10 | SCREW, Drain Plug | |
| 11 | SCREW, Hex Head | |
| 12 | SEAL | 2010027 |
| 13 | KEY, Rotor | |
| 14 | RING, Eccentric | |
| 15 | ROTOR SET | 2010208 |
| 16 | PIN, Eccentric | |
| 17 | PIN, Locating | |
| 18 | RETAINER, Key | 2 |
| 19 | SCREW, Hex Head | |
| 20 | SHAFT | |
| OIL PUMP & PIPING | ||
| 1 | SCREEN-OIL | 3WAJ511 |
| 2 | ELBOW | 64S12 |
| 3 | NIPPLE | 63H4 |
| 4 | ELBOW | 64C6 |
| 5 | PUMP OIL* | 46C21 |
| 6 | ADAPTOR, Oil Pump to Frame | PZ1398 |
| 7 | SCREW, Adaptor to Oil Pump | 655ED04D |
| 8 | SCREW, Adaptor to Frame | 655EF05D |
| 9 | WASHER | 95U7 |
| 10 | BUSHING HUB, Gear, Includes Reference No. 12 | 22F12SD |
| 11 | GEAR DRIVEN, Oil Pump | 2013884 |
| 12 | SCREW, Gear to Bushing (Included with Reference Number 10) | |
| NIPPLE | 63H4 | |
| WIRE, Adaptor to Oil Pump | 97A29 | |
| WIRE, Adaptor to Frame Screw | 97A29 | |
| 13 | BUSHING -PIPE | 664E16 |
| 14 | ADAPTOR HOSE | 29Q17 |
| 15 | ASSEMBLY HYDRAULIC HOSE | 29E12 |
| 16 | ELBOW | 64D6 |
| 17 | TEE-PIPE | 64G7 |
| 18 | NIPPLE | 63U12X16 |
| 19 | VALVE LIQUID RELIEF | 90AR28 |
| 20 | NIPPLE | 63U12X34 |
| 22 | FILTER OIL** (Filter to Heat Exchanger Group) | 26C18 |
| 24 | HYDRAULIC HOSE ASSEMBLY | 29Z84 |
| 25 | ADAPTOR HOSE | 29Q17 |
| 26 | COUPLING PIPE | 64BK5 |
| 27 | NIPPLE | 63G1 |
| 28 | BUSHING PIPE | 64E16 |
| 29 | CONNECTOR -PIPE | 78AUX113 |
| 30 | ADAPTOR HOSE | 29Q10 |
| 31 | HYDRAULIC HOSE ASSEMBLY | 2009270 |
| 32 | ADAPTOR HOSE | 29Q10 |
| 33 | BUSHING- PIPE | 6.40E+12 |
| 34 | HEAT EXCHANGER | 2013457 |
| 35 | SCREW, Heat Exchanger to Skid | 655EE060 |
| 36 | LOCKWASHER | 95B5 |
| 37 | NUT | 50B5 |
| 38 | BUSHING-PIPE | 64E11 |
| 39 | ADAPTOR- HOSE | 29Q10 |
| 40 | HYDRAULIC HOSE ASSEMBLY | 2009247 |
| 41 | ADAPTOR-HOSE | 29Q10 |
| 42 | CONNECTOR, Frame | 78AUX113 |
| 43 | BUSHING-PIPE | 64E16 |
| 44 | ADAPTOR HOSE | 29Q17 |
| 45 | CLAMP, Hose | PZ1301 |
| 46 | SCREW, Clamp | 655EF040 |
| 47 | HYDRAULIC HOSE ASSEMBLY | 29R93 |
| 48 | ADAPTOR HOSE | 29Q17 |
| 49 | ELBOW | 64C5 |
| 50 | TROUGH, Oil Food | 200PZG125 |
| 51 | SCREW, Oil Feed Trough to Frame | 655EF030 |
| SCREW, Hose Clamp to Bearing Housing | 655EG04N | |
| WASHER, Hose Clamp to Bearing Housing | 95A8 | |
| 52 | ADAPTOR HOSE | 29Q54 |
| 53 | HYDRAULIC HOSE ASSEMBLY | 29Z60 |
| 54 | ELBOW (Oil Trough to Jackshaft Bearings) | 64D4 |
| 55 | ADAPTOR-HOSE | 29Q64 |
| 56 | HYDRAULIC HOSE ASSEMBLY | 29Z61 |
| 57 | ELBOW | 164C3 |
| 58 | NIPPLE(Thermostat Valve to Heat Exchanger Group)* | 63E4 |
| 59 | VALVE THERMOSTAT | 90K165 |
| 60 | BUSHING PIPE | E14 |
| 61 | NIPPLE | 63F21 |
| 62 | ELBOW | 64C4 |
| 63 | NIPPLE | 63F21 |
| 64 | UNION | 64Z3 |
| 65 | NIPPLE | 63AJ8X40 |
| 66 | CLAMP-HOSE | 29B31 |
| 67 | HOSE OIL | R14G |
| 68 | NIPPLE | 63AJX840 |
| 69 | ELBOW | 64C4 |
| 70 | NIPPLE | 63F21 |
| 71 | BUSHING | 64E29 |
| PISTON LUBRICATING PIPING | ||
| 1 | SCREEN-OIL | 2WAJ511 |
| 2 | NIPPLE | 63H25 |
| 3 | UNION-HAMMER, Wing | 64EB1 |
| 4 | NIPPLE | 63H25 |
| 5 | VALVE | 90A36 |
| 6 | NIPPLE | 63H25 |
| 7 | TEE-PIPE | 64G8G |
| 8 | NIPPLE | 63H25 |
| 9 | VALVE | 90A36 |
| 10 | ADAPTOR-HOSE | 29Q9 |
| 11 | HYDRAULIC HOSE ASSEMBLY …. | 2009270 |
| 12 | PUMP PISTON LUBRICATING,* Includes Reference Number 13 | CA122 |
| 13 | KEY | 35B4 |
| 14 | SCREW, Pump to Skid | 655ED040 |
| 15 | LOCKWASHER, Pump to Skid | 95B3 |
| 16 | WASHER, Pump to Skid | 95A3 |
| 17 | SHEAVE | 73K1A30 |
| 18 | BUSHING-HUB | 22E16B |
| 19 | BELT | 13C22 |
| 20 | AUXILIARY SHEAVE ASSEMBLY . | 2006103 |
| PLATE, Lubricating Pump to Skid … | 201PZG247 | |
| SCREW, Lubricating Pump to Skid .. | 655EE060 | |
| WASHER, Lubricating Pump to Skid | 95A5 | |
| LOCKWASHER, Lubricating Pump to Skid | 95B5 | |
| SET SCREW, Sheave (Pump to Liner Group) | 76F30 | |
| 21 | ADAPTOR-HOSE | 29Q10 |
| 22 | HYDRAULIC HOSE ASSEMBLY | 2009247 |
| 23 | ADAPTOR-HOSE | 29Q29 |
| 24 | REDUCER-PIPE | 64N3 |
| 25 | VALVE | 90A25 |
| 26 | ELBOW | 64C5 |
| 27 | NIPPLE | 63G8 |
| 28 | TEE-PIPE | 64P39 |
| 29 | CLAMP-PIPE | 98H5 |
| 30 | WASHER | 95A3 |
| 31 | SCREW | 75A68 |
| 32 | NIPPLE | 63N12X144 |
| 33 | TEE-PIPE | 64P39 |
| 34 | NIPPLE | 63N12X144 |
| 35 | TEE-PIPE | 64P39 |
| 36 | PLUG | 64A5 |
| 37 | HYDRAULIC HOSE ASSEMBLY . | 29R32 |
| 38 | ADAPTOR-HOSE | 29Q83 |
| 39 | REDUCER-PIPE | 64N15 |
| 40 | BAFFLE | 200PZG840 |
| 41 | NUT-ACORN (Frame to Lube Oil Tank Group) | 53Q30 |
| 42 | NIPPLE | 63L7 |
| 43 | ELBOW | 64C9 |
| 44 | TANK-LUBE OIL | 2012639 |
| 45 | PLUG | 64A7 |
| 46 | SCREW, Lube Tank to Skid | 655EE040 |
| 47 | WASHER | 95A5 |
| 48 | PLUG | 64A6 |
| 49 | COVER-LUBE OIL TANK | 2012665 |
| 50 | NUT-WING | 50H1 |
Field Failure Repair Case Studies
Case 1: Clogged Oil Filter Causing Bearing Lubrication Failure
A land drilling rig operating a Gardner Denver PZ-7 pump experienced overheating bearings due to a severely clogged oil filter (26C18) that restricted oil flow. Replacing the filter, flushing the lubrication lines, and replacing degraded seals restored full oil pressure, reducing bearing temperature by 45°F and preventing catastrophic bearing failure.
Case 2: Worn Oil Pump Rotor Set Disrupting Lubrication
An offshore well servicing crew faced inconsistent lubrication pressure on a PZ-7 pump, traced to a worn rotor set (2010208) in the main oil pump. Installing a new OEM-equivalent rotor set and replacing shaft bearings restored steady oil flow, eliminating dry running and extending piston service life.
Case 3: Thermostatic Valve Failure Causing Oil Overheating
A remote drilling rig detected rapid oil temperature spikes on a PZ-7 pump, caused by a faulty thermostatic valve (90K165) that failed to engage the heat exchanger. Replacing the thermostatic valve and inspecting the heat exchanger assembly restored proper temperature regulation, preventing oil breakdown and pump damage.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these lubrication parts compatible only with the Gardner Denver PZ-7 mud pump? | Yes, all components are precision designed exclusively for the Gardner Denver PZ-7 mud pump, matching OEM fit, form, and lubrication system specifications exactly. |
| What is the recommended replacement interval for oil filters in the PZ-7 lubrication system? | For optimal performance, oil filters (26C18, 3WAJ511) should be replaced every 300 operating hours, or sooner if drilling in highly contaminated conditions. |
| Do these parts include both the main oil pump and piston lubricating pump components? | Yes, this parts list covers all components for both the main oil pump (46C21) and piston lubricating pump assemblies, plus full piping, valves, and accessories. |
Conclusion & Procurement Guidance
This Gardner Denver PZ-7 lubrication system parts list is your definitive, API 7K-compliant resource for all procurement and technical repair needs for the PZ-7 mud pump’s lubrication circuit. It eliminates the risk of ordering ill-fitting, low-quality parts, provides clear part number and quantity guidance for seamless ordering, and establishes a reliable technical standard for troubleshooting and maintaining your pump’s lubrication system. Whether you need to replace worn pumps, filters, hoses, valves, or structural hardware, this guide provides all critical details to make informed, cost-effective purchasing decisions. Choosing these precision-engineered, OEM-equivalent components ensures your Gardner Denver PZ-7 mud pump receives consistent, reliable lubrication, minimizes costly rig downtime, and extends the service life of critical pump components in the harshest drilling conditions. Reach out to secure these essential lubrication parts and keep your drilling operations running smoothly with reliable, field-proven components tailored to your exact PZ-7 pump configuration.
