{"product_id":"ultraflex-up20f-up25f-up28f-front-mount-hydraulic-steering-helm","title":"Ultraflex UP20F \/ UP25F \/ UP28F Front Mount Hydraulic Steering Helm","description":"\u003cp\u003eThe \u003cstrong\u003eUltraflex UP20F, UP25F and UP28F\u003c\/strong\u003e are five-piston, front-mount hydraulic steering helm pumps for compatible marine hydraulic steering systems. Choose the \u003cstrong\u003eUP20F 43180Y with 20cc\/rev displacement\u003c\/strong\u003e, the \u003cstrong\u003eUP25F 42462D with 25cc\/rev displacement\u003c\/strong\u003e or the \u003cstrong\u003eUP28F 42459R with 28cc\/rev displacement\u003c\/strong\u003e. All three models have a built-in lock valve, an integral 70-bar \/ 1000psi relief valve, a standard 19mm \/ 3\/4in tapered stainless-steel steering-wheel shaft and adjustable 90° fittings for 3\/8in hydraulic hose.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eProduct Identification\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Ultraflex\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct range:\u003c\/strong\u003e UP front-mount hydraulic helms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct category:\u003c\/strong\u003e Marine hydraulic steering helm pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump type:\u003c\/strong\u003e Manual hydraulic steering helm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable models:\u003c\/strong\u003e UP20F \/ UP25F \/ UP28F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part numbers:\u003c\/strong\u003e 43180Y \/ 42462D \/ 42459R\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUP20F part number:\u003c\/strong\u003e 43180Y\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUP25F part number:\u003c\/strong\u003e 42462D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUP28F part number:\u003c\/strong\u003e 42459R\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting type:\u003c\/strong\u003e Front mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump design:\u003c\/strong\u003e Five-piston hydraulic helm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable displacement:\u003c\/strong\u003e 20cc, 25cc or 28cc per steering-wheel revolution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief-valve setting:\u003c\/strong\u003e 70 bar \/ 1000psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteering-wheel shaft:\u003c\/strong\u003e Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel-shaft fitting:\u003c\/strong\u003e Standard 19mm \/ 3\/4in taper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose fittings:\u003c\/strong\u003e Adjustable 90° fittings for 3\/8in hydraulic hose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Compatible marine hydraulic steering systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat Are These Hydraulic Helm Pumps Used For?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Ultraflex UP20F, UP25F and UP28F convert steering-wheel rotation into hydraulic fluid flow. When connected to a compatible hydraulic cylinder through the correct steering hoses, turning the wheel moves the cylinder and controls the boat's rudder, outboard engine or sterndrive steering mechanism.\u003c\/p\u003e\n\u003cp\u003eThey can be used for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNew marine hydraulic steering installations\u003c\/li\u003e\n\u003cli\u003eReplacement of a compatible front-mount hydraulic helm\u003c\/li\u003e\n\u003cli\u003eSingle-station hydraulic steering systems\u003c\/li\u003e\n\u003cli\u003eCompatible multi-station systems designed in accordance with Ultraflex installation data\u003c\/li\u003e\n\u003cli\u003eSuitable outboard, inboard and sterndrive steering configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe helm pump is only one component of the steering system. It must be correctly matched to the cylinder volume, engine or rudder arrangement, hydraulic hoses and required number of steering-wheel turns.\u003c\/p\u003e\n\u003cp\u003eEngine horsepower capacity is determined by the complete hydraulic steering system rather than the helm pump alone.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat Is Included?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe selected Ultraflex hydraulic helm pump is supplied with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelected UP20F, UP25F or UP28F front-mount helm pump\u003c\/li\u003e\n\u003cli\u003eBuilt-in lock valve\u003c\/li\u003e\n\u003cli\u003eIntegral over-pressure relief valve\u003c\/li\u003e\n\u003cli\u003eStandard 3\/4in tapered stainless-steel steering-wheel shaft\u003c\/li\u003e\n\u003cli\u003eAdjustable 90° fittings for 3\/8in hydraulic hose\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSteering wheel\u003c\/li\u003e\n\u003cli\u003eHydraulic steering cylinder\u003c\/li\u003e\n\u003cli\u003eHydraulic steering hoses\u003c\/li\u003e\n\u003cli\u003eHydraulic steering oil\u003c\/li\u003e\n\u003cli\u003eFilling or bleeding kit\u003c\/li\u003e\n\u003cli\u003eAdditional steering-station connection kit\u003c\/li\u003e\n\u003cli\u003eOptional dashboard-positioning flange\u003c\/li\u003e\n\u003cli\u003eOptional tilt mechanism\u003c\/li\u003e\n\u003cli\u003eEngine, rudder or steering linkage components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eWhich Hydraulic Steering Systems Are Compatible?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eCompatibility depends on the selected helm model, hydraulic-cylinder volume, boat configuration, steering load and complete system design.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUP20F compatibility:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUltraflex specifies the UP20F for use only with the following cylinders:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUltraflex UC95-OBF front-mount outboard cylinder\u003c\/li\u003e\n\u003cli\u003eUltraflex UC68-OBS side-mount outboard cylinder\u003c\/li\u003e\n\u003cli\u003eUltraflex UC69-I inboard cylinder\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not combine the UP20F with a different cylinder unless that combination is expressly approved by Ultraflex.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUP25F and UP28F compatibility:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe UP25F and UP28F must be matched to a compatible Ultraflex cylinder using the current steering-system selection data. Before ordering, confirm:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCylinder model and internal volume\u003c\/li\u003e\n\u003cli\u003eNumber and type of engines\u003c\/li\u003e\n\u003cli\u003eTotal engine horsepower\u003c\/li\u003e\n\u003cli\u003eInboard, outboard or sterndrive configuration\u003c\/li\u003e\n\u003cli\u003eRequired turns from lock to lock\u003c\/li\u003e\n\u003cli\u003eSingle- or multi-station installation\u003c\/li\u003e\n\u003cli\u003eHose type, diameter and working-pressure rating\u003c\/li\u003e\n\u003cli\u003eMaximum steering-wheel diameter\u003c\/li\u003e\n\u003cli\u003eAvailable dashboard and behind-panel clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not select a helm pump solely from engine horsepower. The cylinder, helm displacement, hoses, fittings and engine or rudder arrangement must be approved as one complete steering system.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhich Model Should I Choose?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUP20F \/ 43180Y:\u003c\/strong\u003e 20cc\/rev displacement, 3.6kg weight and maximum 508mm \/ 20in steering-wheel diameter. Restricted to UC95-OBF, UC68-OBS and UC69-I cylinders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUP25F \/ 42462D:\u003c\/strong\u003e 25cc\/rev displacement, 5kg weight and maximum 710mm \/ 28in steering-wheel diameter. Provides an intermediate displacement between the UP20F and UP28F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUP28F \/ 42459R:\u003c\/strong\u003e 28cc\/rev displacement, 5kg weight and maximum 710mm \/ 28in steering-wheel diameter. Moves more hydraulic fluid per wheel revolution than the UP20F or UP25F.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor the same cylinder volume and steering configuration, a higher-displacement helm normally produces fewer steering-wheel turns from lock to lock but requires greater steering effort. A lower-displacement helm normally produces more turns with lower effort.\u003c\/p\u003e\n\u003cp\u003eThe required number of turns can be estimated from cylinder volume divided by helm displacement, but the approved Ultraflex system specification remains the controlling selection requirement.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eHydraulic Specifications and Fitment\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eUP20F \/ 43180Y\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Front mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement per revolution:\u003c\/strong\u003e 20cc \/ 1.2cu.in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of pistons:\u003c\/strong\u003e Five\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief-valve setting:\u003c\/strong\u003e 70 bar \/ 1000psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum steering-wheel diameter:\u003c\/strong\u003e 508mm \/ 20in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.6kg \/ 8lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel-shaft taper:\u003c\/strong\u003e 19mm \/ 3\/4in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose fitting size:\u003c\/strong\u003e 3\/8in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e Corrosion-resistant composite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproved cylinder models:\u003c\/strong\u003e UC95-OBF, UC68-OBS and UC69-I only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUP25F \/ 42462D\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Front mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement per revolution:\u003c\/strong\u003e 25cc \/ 1.5cu.in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of pistons:\u003c\/strong\u003e Five\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief-valve setting:\u003c\/strong\u003e 70 bar \/ 1000psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum steering-wheel diameter:\u003c\/strong\u003e 710mm \/ 28in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 5kg \/ 11lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel-shaft taper:\u003c\/strong\u003e 19mm \/ 3\/4in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose fitting size:\u003c\/strong\u003e 3\/8in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston race:\u003c\/strong\u003e Ball bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor material:\u003c\/strong\u003e Cast iron\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUP28F \/ 42459R\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Front mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement per revolution:\u003c\/strong\u003e 28cc \/ 1.7cu.in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of pistons:\u003c\/strong\u003e Five\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief-valve setting:\u003c\/strong\u003e 70 bar \/ 1000psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum steering-wheel diameter:\u003c\/strong\u003e 710mm \/ 28in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 5kg \/ 11lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel-shaft taper:\u003c\/strong\u003e 19mm \/ 3\/4in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose fitting size:\u003c\/strong\u003e 3\/8in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiston race:\u003c\/strong\u003e Ball bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor material:\u003c\/strong\u003e Cast iron\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe UP20F uses a different housing and dashboard arrangement from the UP25F and UP28F. Do not assume that the helm pumps share the same dashboard cut-out, mounting-hole pattern or optional flange.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eConstruction and Design\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eFeatures common to all three models include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFive-piston hydraulic pumping mechanism\u003c\/li\u003e\n\u003cli\u003eBuilt-in lock valve for positive rudder lock\u003c\/li\u003e\n\u003cli\u003eIntegral relief valve for over-pressure protection\u003c\/li\u003e\n\u003cli\u003eStandard 3\/4in tapered stainless-steel shaft\u003c\/li\u003e\n\u003cli\u003eAccessible lock valve and shaft seal for servicing\u003c\/li\u003e\n\u003cli\u003eAdjustable 90° hydraulic-hose fittings\u003c\/li\u003e\n\u003cli\u003eFront-mount dashboard installation\u003c\/li\u003e\n\u003cli\u003eConstruction intended for marine hydraulic steering systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe built-in lock valve provides positive hydraulic rudder lock and helps prevent steering loads from hydraulically driving the steering wheel backwards.\u003c\/p\u003e\n\u003cp\u003eThe integral relief valve is set to 70 bar \/ 1000psi to protect the steering system against excessive hydraulic pressure. It does not remove the requirement for correctly rated hoses, fittings and cylinders.\u003c\/p\u003e\n\u003cp\u003eThe UP20F uses a corrosion-resistant composite housing. The UP25F and UP28F use a ball-bearing piston race and cast-iron rotor for durability within the hydraulic pumping mechanism.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eOptional Mounting Accessories\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOptional mounting accessories are sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor the UP20F:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eX74 square flange:\u003c\/strong\u003e Allows the UP20F to be positioned partially within the dashboard for an intermediate mounting position\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFor the UP25F and UP28F:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eX64 square flange:\u003c\/strong\u003e Intermediate dashboard-position mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eX57 round flange:\u003c\/strong\u003e Intermediate dashboard-position mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eX72 tilt mechanism:\u003c\/strong\u003e Provides a 60° adjustment range with five locking positions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm that the selected accessory is compatible with the exact pump model before ordering. The accessory does not change the hydraulic displacement or cylinder compatibility of the helm.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eSteering-Wheel Compatibility\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eAll three pumps use a standard \u003cstrong\u003e19mm \/ 3\/4in tapered stainless-steel steering-wheel shaft\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBefore choosing a steering wheel, confirm:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe wheel has a standard 3\/4in tapered hub\u003c\/li\u003e\n\u003cli\u003eThe wheel diameter does not exceed the selected helm's maximum\u003c\/li\u003e\n\u003cli\u003eThe wheel and hub seat correctly on the shaft taper\u003c\/li\u003e\n\u003cli\u003eThe correct shaft key and retaining hardware are used\u003c\/li\u003e\n\u003cli\u003eThe wheel can rotate through the complete steering range without contacting instruments, controls or the dashboard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMaximum stated wheel diameters are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUP20F:\u003c\/strong\u003e 508mm \/ 20in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUP25F:\u003c\/strong\u003e 710mm \/ 28in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUP28F:\u003c\/strong\u003e 710mm \/ 28in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA steering wheel is not included with any of the three helm pumps.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eStandards and Certification\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eUltraflex conformity documentation for the UP20, UP25 and UP28 hydraulic helm families references:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRecreational Craft Directive 2013\/53\/EU\u003c\/li\u003e\n\u003cli\u003eEN ISO 10592:2017\u003c\/li\u003e\n\u003cli\u003eABYC P21\u003c\/li\u003e\n\u003cli\u003eIMCI CE type approval\u003c\/li\u003e\n\u003cli\u003eNMMA type acceptance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCertification of the helm pump does not certify an incorrectly selected or installed steering system. The cylinder, hoses, fittings, hydraulic fluid, steering wheel and installation must comply with the applicable Ultraflex instructions and marine regulations.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eInstallation and Use\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eBefore installation:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the exact selected model and part number\u003c\/li\u003e\n\u003cli\u003eVerify the pump-to-cylinder compatibility\u003c\/li\u003e\n\u003cli\u003eCheck the required helm displacement and turns from lock to lock\u003c\/li\u003e\n\u003cli\u003eCheck dashboard cut-out and mounting-hole dimensions against the selected model's drawing\u003c\/li\u003e\n\u003cli\u003eConfirm sufficient clearance behind and in front of the dashboard\u003c\/li\u003e\n\u003cli\u003eConfirm that the dashboard is rigid enough to support the helm and steering loads\u003c\/li\u003e\n\u003cli\u003eCheck that the steering wheel remains within the helm's maximum diameter\u003c\/li\u003e\n\u003cli\u003eConfirm that all hoses and fittings have the required pressure rating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not use the mounting template or dashboard cut-out dimensions from a different Ultraflex helm model.\u003c\/p\u003e\n\u003cp\u003eConnect the hydraulic hoses to the correct pump ports using the supplied 90° adjustable fittings. Hose routing must avoid:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTight bends\u003c\/li\u003e\n\u003cli\u003eAbrasion points\u003c\/li\u003e\n\u003cli\u003eHot engine components\u003c\/li\u003e\n\u003cli\u003eMoving machinery\u003c\/li\u003e\n\u003cli\u003eAreas where the hoses can be crushed or pulled\u003c\/li\u003e\n\u003cli\u003eUnnecessary high points that may retain air\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFill and bleed the system using the hydraulic fluid and procedure specified by Ultraflex. Air remaining in the system can cause excessive steering-wheel movement, delayed steering response and incomplete cylinder travel.\u003c\/p\u003e\n\u003cp\u003eAfter installation and bleeding, check that:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe steering wheel turns smoothly in both directions\u003c\/li\u003e\n\u003cli\u003eThe cylinder reaches its complete permitted travel\u003c\/li\u003e\n\u003cli\u003eThe system reaches both steering limits without binding\u003c\/li\u003e\n\u003cli\u003eThere is no excessive steering-wheel free movement\u003c\/li\u003e\n\u003cli\u003eThe helm remains securely fixed to the dashboard\u003c\/li\u003e\n\u003cli\u003eThe steering wheel remains securely seated on the shaft\u003c\/li\u003e\n\u003cli\u003eNo oil leaks are present at the helm, fittings, hoses or cylinder\u003c\/li\u003e\n\u003cli\u003eHydraulic hoses do not contact moving or hot components\u003c\/li\u003e\n\u003cli\u003eThe lock valve provides consistent steering position\u003c\/li\u003e\n\u003cli\u003eThe fluid level remains correct after repeated operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMarine steering is a safety-critical system. Leaks, damaged hoses, incorrect cylinder selection, persistent air or abnormal helm movement must be corrected before the boat is used.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCombined choice of three Ultraflex front-mount hydraulic helms\u003c\/li\u003e\n\u003cli\u003eUP20F manufacturer part number 43180Y\u003c\/li\u003e\n\u003cli\u003eUP25F manufacturer part number 42462D\u003c\/li\u003e\n\u003cli\u003eUP28F manufacturer part number 42459R\u003c\/li\u003e\n\u003cli\u003e20cc, 25cc or 28cc displacement per wheel revolution\u003c\/li\u003e\n\u003cli\u003eFive-piston hydraulic design\u003c\/li\u003e\n\u003cli\u003eBuilt-in lock valve for positive rudder lock\u003c\/li\u003e\n\u003cli\u003eIntegral 70-bar \/ 1000psi relief valve\u003c\/li\u003e\n\u003cli\u003eStandard 19mm \/ 3\/4in tapered stainless-steel shaft\u003c\/li\u003e\n\u003cli\u003eAdjustable 90° fittings for 3\/8in hydraulic hose\u003c\/li\u003e\n\u003cli\u003eAccessible lock valve and shaft seal\u003c\/li\u003e\n\u003cli\u003eUP20F corrosion-resistant composite housing\u003c\/li\u003e\n\u003cli\u003eUP25F and UP28F ball-bearing piston race\u003c\/li\u003e\n\u003cli\u003eUP25F and UP28F cast-iron rotor\u003c\/li\u003e\n\u003cli\u003eUP20F maximum wheel diameter of 508mm \/ 20in\u003c\/li\u003e\n\u003cli\u003eUP25F and UP28F maximum wheel diameter of 710mm \/ 28in\u003c\/li\u003e\n\u003cli\u003eUP20F weight of 3.6kg \/ 8lb\u003c\/li\u003e\n\u003cli\u003eUP25F and UP28F weight of 5kg \/ 11lb\u003c\/li\u003e\n\u003cli\u003eOptional dashboard-positioning accessories available separately\u003c\/li\u003e\n\u003cli\u003eSteering wheel, cylinder, hoses and hydraulic oil supplied separately\u003c\/li\u003e\n\u003cli\u003eComplete steering-system compatibility must be confirmed before installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"width:100%;overflow-x:auto;\"\u003e\n\u003ctable class=\"spec-table\" style=\"width:100%;min-width:900px;border-collapse:collapse;font-family:Roboto, Arial, sans-serif;background:#ffffff;text-align:center;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background:#f5f5f5;\"\u003e\n      \u003cth style=\"border:1px solid #ddd;padding:8px;text-align:center;font-weight:500;\"\u003eSpecification\u003c\/th\u003e\n      \u003cth style=\"border:1px solid #ddd;padding:8px;text-align:center;font-weight:500;\"\u003eUP20F\u003cbr\u003e43180Y\u003c\/th\u003e\n      \u003cth style=\"border:1px solid #ddd;padding:8px;text-align:center;font-weight:500;\"\u003eUP25F\u003cbr\u003e42462D\u003c\/th\u003e\n      \u003cth style=\"border:1px solid #ddd;padding:8px;text-align:center;font-weight:500;\"\u003eUP28F\u003cbr\u003e42459R\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eBrand\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eUltraflex\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eUltraflex\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eUltraflex\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eProduct Category\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eMarine Hydraulic Steering Helm Pump\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eMarine Hydraulic Steering Helm Pump\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eMarine Hydraulic Steering Helm Pump\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eModel\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eUP20F\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eUP25F\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eUP28F\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eManufacturer Part Number\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e43180Y\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e42462D\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e42459R\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eMounting Type\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eFront Mount\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eFront Mount\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eFront Mount\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003ePump Design\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eFive-Piston Hydraulic Helm\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eFive-Piston Hydraulic Helm\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eFive-Piston Hydraulic Helm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eDisplacement per Revolution\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e20cc \/ 1.2cu.in\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e25cc \/ 1.5cu.in\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e28cc \/ 1.7cu.in\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNumber of Pistons\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eFive\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eFive\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eFive\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eBuilt-In Lock Valve\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eYes\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eYes\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eYes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eRelief-Valve Setting\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e70 bar \/ 1000psi\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e70 bar \/ 1000psi\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e70 bar \/ 1000psi\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eSteering-Wheel Shaft Material\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eStainless Steel\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eStainless Steel\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eStainless Steel\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eSteering-Wheel Shaft Taper\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eStandard 19mm \/ 3\/4in Taper\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eStandard 19mm \/ 3\/4in Taper\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eStandard 19mm \/ 3\/4in Taper\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eHydraulic-Hose Fittings\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eAdjustable 90° Fittings for 3\/8in Hose\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eAdjustable 90° Fittings for 3\/8in Hose\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eAdjustable 90° Fittings for 3\/8in Hose\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eMaximum Steering-Wheel Diameter\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e508mm \/ 20in\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e710mm \/ 28in\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e710mm \/ 28in\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eWeight\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e3.6kg \/ 8lb\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e5kg \/ 11lb\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e5kg \/ 11lb\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eHousing\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eCorrosion-Resistant Composite\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNot Stated in Available Data\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNot Stated in Available Data\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003ePiston Race\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNot Stated in Available Data\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eBall Bearing\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eBall Bearing\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eRotor Material\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNot Stated in Available Data\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eCast Iron\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eCast Iron\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eCylinder Compatibility\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eUC95-OBF, UC68-OBS and UC69-I Only\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eMust Be Matched Using Ultraflex Steering-System Selection Data\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eMust Be Matched Using Ultraflex Steering-System Selection Data\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eOptional Mounting Accessories\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eX74 Square Flange\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eX57 Round Flange, X64 Square Flange or X72 Tilt Mechanism\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eX57 Round Flange, X64 Square Flange or X72 Tilt Mechanism\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eRecreational Craft Directive\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e2013\/53\/EU\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e2013\/53\/EU\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003e2013\/53\/EU\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eISO Standard\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eEN ISO 10592:2017\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eEN ISO 10592:2017\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eEN ISO 10592:2017\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eABYC Standard\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eABYC P21\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eABYC P21\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eABYC P21\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eApproval References\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eIMCI CE Type Approval and NMMA Type Acceptance\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eIMCI CE Type Approval and NMMA Type Acceptance\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eIMCI CE Type Approval and NMMA Type Acceptance\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eSteering Wheel Included\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eHydraulic Cylinder Included\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eHydraulic Hoses Included\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eHydraulic Oil Included\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n      \u003ctd style=\"border:1px solid #ddd;padding:8px;text-align:center;\"\u003eNo\u003c\/td\u003e\n    \u003c\/tr\u003e\n  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