Model: 4M10G110 / 4M10G70 / 4M10G88
Part Number: 1004810498
Brands: Baudouin
Engine Model: 4M10G70, 4M10G88, 4M10G110
Engine Type: Marine and industrial diesel
Scope of application: marine propulsion, marine auxiliary, generator sets, industrial power units
A marine engine runs at constant load for long periods, and the oil pump has no rest. Part 1004810498 is the gear-type oil pump shared by the Baudouin 4M10G70, 4M10G88 and 4M10G110 engines, drawing oil from the sump, pressurising it and feeding the main and rod bearings, the camshaft and the valve train.
When the pump wears, the symptom appears first at low speed: pressure drops as the engine idles in harbour, then recovers at cruising speed, so the fault is easy to dismiss. By the time pressure is low at cruising speed, bearing damage has usually started.
The pump fits all three 4M10G ratings, which simplifies spare parts planning for operators running mixed engines. Confirm the engine plate and the old pump number: marine and industrial versions can use a different pick-up arrangement even when the pump body is the same casting.
Every pump is run on a test bench rather than only inspected. Flow is measured at rated speed against the original curve, the relief valve is opened and its pressure recorded, gear backlash and end clearance are measured, and the housing and joints are leak tested.
Pumps ship oiled and plugged, with the drive gear fitted and keyed as original.
Confirm with a mechanical gauge at the main gallery. A blocked strainer imitates a worn pump exactly.
Check oil level and condition, replace the filter, inspect the strainer, then measure pressure with a mechanical gauge. Only after those steps should the relief valve and pump come under suspicion. Recording idle, cruising and full-load pressure gives a clear diagnosis and avoids buying parts that are not needed.
Match the part number, the engine rating and the drive type. If the engine has been rebuilt with a replacement front cover, check that the mounting face and drive gear match. Send a photo of the old pump beside a ruler and we will confirm the casting before shipping.
Marine operators usually have limited warning before a failure, because the engine room is noisy and nobody watches a gauge for hours. Regular oil analysis is the most reliable way to catch bearing wear early: rising iron and lead show that the oil film is breaking down before pressure starts to fall.
After assembly, measure pressure at three points: idle, cruising and full load, then compare with specification. A pump that holds rated pressure but drops at idle usually has worn bearings downstream. Also check the filter bypass and the oil cooler for restriction.
Most premature failures come from contaminated oil. Use the specified grade, change it at the hours-based interval and never run with a leaking injector that thins the oil with diesel. Keep the cooling system healthy, because sustained overheating reduces oil film strength.
The oil cooler is part of the same circuit as the pump, and a restricted cooler raises oil temperature, thins the oil and reduces pressure at the bearings. On a marine engine the cooler is usually a tube bundle inside the freshwater circuit, and it can scale over years of service. Cleaning it at overhaul is as important as replacing the pump.
Check cooler flow before assembly and pressure test the bundle. A cooler that leaks internally puts coolant into the oil and destroys bearings in minutes, and the damage is often blamed on the pump because both faults produce low pressure.
Yes, the same pump covers 4M10G70, 4M10G88 and 4M10G110.
Yes, the mounting gasket and O-ring are supplied.
Yes. A blocked strainer, stuck relief valve, worn bearings or a faulty sender all mimic pump failure.
At every major overhaul, or whenever the front cover is removed.
Browse the Baudouin pump category, and pair the pump with the 4M10G water pump 1000429385 or the 4M10G crankshaft 1004743021.
Baudouin Oil Pump (1004810498). This pump supplies the oil film that every bearing depends on. Its output is fixed per revolution, so pressure is decided by clearances downstream as much as by the pump.
Confirm the drive gear and pick-up match your front cover and sump. Adjacent part numbers frequently share a housing casting while differing in drive detail.
Numbers beginning 1004 are numeric-series numbers used on later WP7 and WP8 production, where mounting detail changed without a change of nominal type.
Replace the suction-side O-rings and gaskets with the pump. A hardened O-ring at the pick-up joint draws air and reproduces exactly the symptom the new pump was meant to cure.
Ordering note. Every shipment leaves with a packing list matched to the invoice, which matters when a rebuild is waiting on one seal and the whole pallet has to be cleared through customs.
Related reading: Oil Pump Diagnosis: Low Pressure, Wear and Replacement
| We Are 30 Years Diesel Engine Parts Supplier | |
| Brand | EPID |
| Warranty | 12 Months |
| Condition | 100%New |
| More Models | Weichai: 4M10G70, 4M10G88, 4M10G110, and other Weichai series. |
| Shipping | By sea / air / express (DHL, FEDEX, TNT, UPS, EMS) |
| Packing | Standard exporting packing or as required |
| Payment Term | L/C, T/T, Western Union, Trade Assurance |
| Delivery Time | 3-7 days (depend on order) |
| Selling Point | 1. On-time Delivery 2. Genuine Quality Assurance 3. Professional Supplier |
Every pump is run on a test bench rather than only inspected. Flow is measured at rated speed against the original curve, the relief valve is opened and its pressure recorded, gear backlash and end clearance are measured, and the housing and joints are leak tested.
Pumps ship oiled and plugged, with the drive gear fitted and keyed as original.
Confirm with a mechanical gauge at the main gallery. A blocked strainer imitates a worn pump exactly.
Check oil level and condition, replace the filter, inspect the strainer, then measure pressure with a mechanical gauge. Only after those steps should the relief valve and pump come under suspicion. Recording idle, cruising and full-load pressure gives a clear diagnosis and avoids buying parts that are not needed.
Match the part number, the engine rating and the drive type. If the engine has been rebuilt with a replacement front cover, check that the mounting face and drive gear match. Send a photo of the old pump beside a ruler and we will confirm the casting before shipping.
Marine operators usually have limited warning before a failure, because the engine room is noisy and nobody watches a gauge for hours. Regular oil analysis is the most reliable way to catch bearing wear early: rising iron and lead show that the oil film is breaking down before pressure starts to fall.
After assembly, measure pressure at three points: idle, cruising and full load, then compare with specification. A pump that holds rated pressure but drops at idle usually has worn bearings downstream. Also check the filter bypass and the oil cooler for restriction.
Most premature failures come from contaminated oil. Use the specified grade, change it at the hours-based interval and never run with a leaking injector that thins the oil with diesel. Keep the cooling system healthy, because sustained overheating reduces oil film strength.
The oil cooler is part of the same circuit as the pump, and a restricted cooler raises oil temperature, thins the oil and reduces pressure at the bearings. On a marine engine the cooler is usually a tube bundle inside the freshwater circuit, and it can scale over years of service. Cleaning it at overhaul is as important as replacing the pump.
Check cooler flow before assembly and pressure test the bundle. A cooler that leaks internally puts coolant into the oil and destroys bearings in minutes, and the damage is often blamed on the pump because both faults produce low pressure.
Browse the Baudouin pump category, and pair the pump with the 4M10G water pump 1000429385 or the 4M10G crankshaft 1004743021.
Yes, the same pump covers 4M10G70, 4M10G88 and 4M10G110.
Yes, the mounting gasket and O-ring are supplied.
Yes. A blocked strainer, stuck relief valve, worn bearings or a faulty sender all mimic pump failure.
At every major overhaul, or whenever the front cover is removed.
EPID supplies diesel engine parts for Weichai, Baudouin, Yuchai, Caterpillar, Sinotruk, FAW Xichai and Cummins engines. Every order is checked against the original part number before packing, and our team can identify a part from a photo of the engine plate. Ask for a quotation with your model and quantity and we will reply within one working day.
