{"product_id":"22275071-pump-piston-genuine-volvo-penta","title":"22275071 Pump Piston | Genuine Volvo Penta Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n The strength required to steer a boat with a hydraulic steering system is inversely proportional to the number of turns of the wheel lock-to-lock. Wheel turns are determined by the ratio between the cylinder volume, the pump displacement and the free movement of the steering device. A large cylinder volume with a small pump displacement gives more wheel turns; a small cylinder volume with a large pump displacement gives fewer. Fewer wheel turns means quicker steering response but more effort; more wheel turns means slower response but less effort. The helm pumps are available in three displacement sizes - 28 cc, 33 cc and 39 cc - each in three mountings: front mount, rear mount and tilt mount. This is the 33 cc front mount pump, with 7 pistons, a 70 bar relief valve setting and a maximum wheel diameter of 711 mm.\n\u003c\/p\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Engine Family:\n  \u003c\/strong\u003e\n  D\n \u003c\/li\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   HP Range:\n  \u003c\/strong\u003e\n  13-435 HP\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\n Full model list at the end of this description.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  33 cc displacement per wheel revolution\n \u003c\/li\u003e\n \u003cli\u003e\n  Front mount\n \u003c\/li\u003e\n \u003cli\u003e\n  Seven piston pump\n \u003c\/li\u003e\n \u003cli\u003e\n  70 bar relief valve setting\n \u003c\/li\u003e\n \u003cli\u003e\n  For steering wheels up to 711 mm in diameter\n \u003c\/li\u003e\n \u003cli\u003e\n  5.171 kg, listed for 50 applications\n \u003c\/li\u003e\n \u003cli\u003e\n  Replaces 21639571\n \u003c\/li\u003e\n \u003cli\u003e\n  Front mount helm pump\n \u003c\/li\u003e\n \u003cli\u003e\n  7 pistons\n \u003c\/li\u003e\n \u003cli\u003e\n  Maximum wheel diameter 711 mm\n \u003c\/li\u003e\n \u003cli\u003e\n  5 kg\n \u003c\/li\u003e\n \u003cli\u003e\n  Displacement per rev: 33 cc\n \u003c\/li\u003e\n \u003cli\u003e\n  Max wheel diameter: 711 mm\n \u003c\/li\u003e\n \u003cli\u003e\n  Pistons: 7\n \u003c\/li\u003e\n \u003cli\u003e\n  Mounting: Front mount helm pump\n \u003c\/li\u003e\n \u003cli\u003e\n  Relief valve setting: 70 bar\n \u003c\/li\u003e\n \u003cli\u003e\n  Weight: 5 kg\n \u003c\/li\u003e\n \u003cli\u003e\n  Fits: Volvo Penta hydraulic steering systems\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n Converts steering wheel rotation into pressurised hydraulic oil flow to the steering cylinder.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Heavy, notchy or inconsistent steering\n \u003c\/li\u003e\n \u003cli\u003e\n  Wheel turning without the drive following, from internal bypass\n \u003c\/li\u003e\n \u003cli\u003e\n  Hydraulic oil weeping at the shaft seal or the port fittings\n \u003c\/li\u003e\n \u003cli\u003e\n  Air drawn into the circuit giving a spongy helm\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🛠️ Service Notes\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  The 33 cc rear mount pump is 22275074 and the 33 cc tilt mount is 22275077, so confirm the mounting as well as the displacement\n \u003c\/li\u003e\n \u003cli\u003e\n  Fewer wheel turns means quicker response but more effort at the wheel, so keep the pump and cylinder combination the boat was built with unless you intend to change the feel\n \u003c\/li\u003e\n \u003cli\u003e\n  Bleed the circuit fully after fitting and check the level with the steering held hard over each way\n \u003c\/li\u003e\n \u003cli\u003e\n  Displacement and mounting together are the product: the same 33 cc displacement is also listed as 22275074 and 22275077, and the other front mount pumps are 22275070 and 22275072\n \u003c\/li\u003e\n \u003cli\u003e\n  Tilt mount pumps are rated to a 508 mm wheel against 711 mm for the front and rear mount pumps\n \u003c\/li\u003e\n \u003cli\u003e\n  Cylinder volume and pump displacement together set how many turns the wheel takes lock to lock\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  22275071 → Supersedes 21639571 → Supersedes 21135044 → Supersedes 3809972\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  21639571 earlier number superseded by this part\n \u003c\/li\u003e\n \u003cli\u003e\n  21135044 earlier number superseded by this part\n \u003c\/li\u003e\n \u003cli\u003e\n  3809972 earlier number superseded by this part\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine Volvo Penta part\n \u003c\/li\u003e\n \u003cli\u003e\n  Brand new\n \u003c\/li\u003e\n \u003cli\u003e\n  Supplied in original or equivalent packaging\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔎 Full Model Compatibility\n\u003c\/h2\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Volvo Penta D3-220I-G, D3-140I-G, D3-110I-G, D3-150I-G, D3-170I-G, D3-200I-G, D3-110I-H, D3-150I-H, D3-170I-H, D3-200I-H, D3-220I-H, D3-140I-H\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D13C1-A MP, D13C2-A MP, D13B-A MP, D13B-H MP, D13B-G MP, D13B-K MP, D13B-B MP, D13B-J MP, D13C6-A MP\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D11C1-A MP, D11C3-A MP, D11B3-A MP, D11A-C, D11A-D, D11A-E, D11B1-A MP\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-40F, D2-55F, D2-50F, D2-75F, D2-60F\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D4-260I-F, D4-180I-F, D4-225I-F, D4-300I-F\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D6-300I-F, D6-330I-F, D6-370I-F, D6-435I-F\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D8A5-A MH, D8A6-A MH, D8A1-A MP, D8A3-A MP\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D1-30F, D1-13F, D1-20F\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D9A2H, D9A2K\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":53379727261988,"sku":"M988096","price":1477.98,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_a51c4024-ab4e-475e-a094-7f7870f347c6.jpg?v=1788056742","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/22275071-pump-piston-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}