Model: 4M10G70
Part Number: 1000156636
Brands: Baudouin
Engine Model: 4M10G70
Engine Type: Marine and industrial diesel
Scope of application: marine propulsion, marine auxiliary, generator sets
Rings seal combustion gas, conduct heat from the piston into the liner and scrape oil back to the sump. Set 1000156636 is specific to the Baudouin 4M10G70 rating, which differs from the G88 and G110 in piston and fuelling.
Worn rings do not stop a marine engine; they make it weak and smoky. Oil consumption rises, crankcase pressure builds and the engine stops reaching rated output, which on a genset is visible as frequency droop under load.
Although the 4M10G range shares many parts, rings are matched to the piston groove geometry and compression ratio of each rating. Fitting a G88 or G110 set to a G70 produces uneven tension, wrong end gaps and oil consumption that no adjustment can fix.
A tight gap breaks the ring when it heats, and an oversized gap allows blow-by that no tuning can remove.
Ring gaps must be measured in the liner the ring will actually run in, with the ring pushed square to a depth near the bottom of ring travel. Measuring in a different bore, or with the ring tilted, gives a reading that is wrong by enough to cause a failure.
New rings cannot fix a worn piston. Measure groove width with the old ring and a feeler gauge; an opened groove lets the ring flutter and break. Carbon packed into the groove corner also prevents seating, so clean properly rather than scraping the surface.
New rings need cylinder pressure to seat. Run at varying load, increasing gradually over the first hours, and change oil early. A high-detergent oil can slow bedding-in, so follow the workshop recommendation for the break-in period rather than the normal service oil.
Marine fuel varies widely, and poor fuel accelerates ring and liner wear. Keep fuel filters changed and injectors serviced at the recommended hours. A leaking injector washes the bore and dilutes the oil, and the resulting wear is far more expensive than the service would have been.
Track oil consumption against the engine log after the first hundred hours. A steady figure means the rings have seated; a rising figure means a gap or bore finish problem that should be found before it becomes bore damage.
Clean air and correct oil keep rings alive. Keep the air filter and engine room intake clean, use the specified oil grade and change it at the hours-based interval. Fix overheating promptly, because heat softens ring tension.
Rings are supplied in protective sleeves because a bare ring can rust in a humid engine room within days. Keep them wrapped until the pistons are ready, and never mix rings from different sets even when the sizes look identical.
A genset engine runs at a near-constant load, which is gentler on the rings than stop-start duty but gives no variation to help bedding-in after a rebuild. That is why break-in on a genset should be done with a variable load bank rather than at a fixed setting.
Radial tension is what presses the ring against the bore before combustion pressure arrives. A ring with the right dimensions but the wrong tension will either fail to seal at low speed or wear the bore quickly. That is why rings are specified per rating rather than by bore size alone.
No. Each rating has its own piston and ring specification.
One set covers one piston.
Only if the measured gap requires adjustment.
Glazed bores, wrong gaps or rings fitted upside down.
Browse the Baudouin piston and components category, and pair the rings with the 4M10G70 piston 1004877734 or the 4M10G cylinder liner 1000156635.
Baudouin 4M10G70 Piston Ring (1000156636). Compression sealing and oil control both depend on this set. The top ring takes the highest temperature, the second supports sealing, and the oil ring returns oil to the sump.
Note the piston number as well as the engine model. The piston identifies which rating the engine actually is, and the rings follow the piston.
Numbers beginning 1000 come from the newer numeric series used for assemblies and later-production parts. This series replaced several earlier numbers, so a cross-reference check is worthwhile. On this engine, confirm the 4M10G70 application against the engine plate before ordering.
Stagger the end gaps around the piston and oil the rings before fitting. Forcing a ring over the piston without a compressor can crack it invisibly.
Ordering note. Photographs of the actual unit can be sent before dispatch on request. That is the cheapest way to avoid a return when a casting revision is in doubt.
Related reading: Piston Ring Selection: Gap, Tension and Bore Condition
| We Are 30 Years Diesel Engine Parts Supplier | |
| Brand | EPID |
| Warranty | 12 Months |
| Condition | 100%New |
| More Models | Weichai: 4M10G70, 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 |
A tight gap breaks the ring when it heats, and an oversized gap allows blow-by that no tuning can remove.
Ring gaps must be measured in the liner the ring will actually run in, with the ring pushed square to a depth near the bottom of ring travel. Measuring in a different bore, or with the ring tilted, gives a reading that is wrong by enough to cause a failure.
New rings cannot fix a worn piston. Measure groove width with the old ring and a feeler gauge; an opened groove lets the ring flutter and break. Carbon packed into the groove corner also prevents seating, so clean properly rather than scraping the surface.
New rings need cylinder pressure to seat. Run at varying load, increasing gradually over the first hours, and change oil early. A high-detergent oil can slow bedding-in, so follow the workshop recommendation for the break-in period rather than the normal service oil.
Marine fuel varies widely, and poor fuel accelerates ring and liner wear. Keep fuel filters changed and injectors serviced at the recommended hours. A leaking injector washes the bore and dilutes the oil, and the resulting wear is far more expensive than the service would have been.
Track oil consumption against the engine log after the first hundred hours. A steady figure means the rings have seated; a rising figure means a gap or bore finish problem that should be found before it becomes bore damage.
Clean air and correct oil keep rings alive. Keep the air filter and engine room intake clean, use the specified oil grade and change it at the hours-based interval. Fix overheating promptly, because heat softens ring tension.
Rings are supplied in protective sleeves because a bare ring can rust in a humid engine room within days. Keep them wrapped until the pistons are ready, and never mix rings from different sets even when the sizes look identical.
A genset engine runs at a near-constant load, which is gentler on the rings than stop-start duty but gives no variation to help bedding-in after a rebuild. That is why break-in on a genset should be done with a variable load bank rather than at a fixed setting.
Radial tension is what presses the ring against the bore before combustion pressure arrives. A ring with the right dimensions but the wrong tension will either fail to seal at low speed or wear the bore quickly. That is why rings are specified per rating rather than by bore size alone.
Browse the Baudouin piston and components category, and pair the rings with the 4M10G70 piston 1004877734 or the 4M10G cylinder liner 1000156635.
No. Each rating has its own piston and ring specification.
One set covers one piston.
Only if the measured gap requires adjustment.
Glazed bores, wrong gaps or rings fitted upside down.
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.
