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OWNER'S MANUAL

Planning, installing, filling, starting up and servicing a Sleipner hydraulic system for Side-Power thrusters and stabilisers: tank dimensions, pump drive, hoses, seawater cooling, oil and filter service, troubleshooting and filter/cooling pump part numbers.

DocumentSleipner Hydraulic Systems (HS) for Thrusters and Stabilisers Installation & User Manual
FormatPDF · 14 pages · 2.9 MB
LanguageEnglish
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Owner's ManualPDF · 14 p.Installation manual (HS)PDF · 24 p.
SystemInstallationCoolingFill-up & Start-upServiceTroubleshootingSpare PartsProducts
Sleipner Hydraulic Systems (HS) for Thrusters and Stabilisers — Installation & User Manual

System and Tank Data

A Sleipner hydraulic thruster/stabilizer system has one or more hydraulic pumps, one or two thrusters and an oil tank with pre-fitted load sense control valve, oil cooler, high-pressure and return filters, filler/breather filter and level/temperature indicators, plus internal hoses only. Valves and pumps are pre-adjusted at the factory; each system is calculated individually, so hose sizes come from the system drawings supplied with it.

Floor mounted tanks

40L 60L 90L 120L
Height (A) 690 mm / 27.17" 690 mm / 27.17" 800 mm / 31.5" 800 mm / 31.5"
Tank length (C) / total length (D) 615 / 785 mm 683 / 800 mm 683 / 800 mm 883 / 1000 mm
Tank width (E) / total width (F) 340 / 400 mm 479 / 550 mm 479 / 550 mm 479 / 550 mm
Tank volume 52.8 L / 13.9 usg 93.9 L / 24.8 usg 122 L / 32.3 usg 160 L / 42.3 usg
Oil volume 40 L / 10.6 usg 60 L / 15.85 usg 90 L / 23.78 usg 120 L / 31.70 usg
Dry weight 46 kg / 101 lbs 60 kg / 132 lbs 68 kg / 154 lbs 77 kg / 170 lbs

Bulkhead mounted tanks

40L 60L
Height (A) 705 mm / 27.8" 860 mm / 33.6"
Tank length (C) / total length (D) 600 / 870 mm 600 / 890 mm
Tank width (E) 330 mm / 13" 330 mm / 13"
Tank volume / oil volume 52.7 / 40 L 80 / 60 L
Dry weight 45 kg / 99 lbs 59 kg / 130 lbs
  • Ports (floor and bulkhead tanks): pump to filter/valve 1" BSP, tank to pump 2" BSP, valve ports to users 1/2" BSP, water to/from oil cooler 3/4" nipple, bleed returns (3x) 1/2" BSP.
  • Leave 300mm for replacing filter elements. Rack mounted and standalone powerpack dimensions are in the installation manual.

Pump and Tank

  • Three ways to drive the pump: PTO on gearbox or engine (easiest and most reliable; standard SAE-B 2 bolt 13 teeth, SAE-C 4 bolt 14 teeth or SAE-CC 4 bolt 17 teeth), front mounted on the crankshaft with bracket and flexible coupling (the pump must move with the engine), or an AC power pack (soft start/VFD may be needed). Belt drive is not recommended.
  • Check the power source drive direction matches pump rotation (PTO pump nameplate L=CCW, R=CW). Never run the power source before the pump is pre-filled with oil.
  • Place the tank so the oil level is above the pump (gravity feed), with access to filters and filler; secure it and bond it to the boat's bonding system.
  • Keep all hydraulic parts away until grinding and drilling is finished; assemble in a very clean environment.

Hoses

  • Hoses and fittings by trained professionals only; clean every hose internally (jet pellets or flushing) before fitting.
  • No plumbing tape, hemp or excess thread sealant – it contaminates the oil.
  • LS hose from the valve «LS» port to the pump «X» port. Too long/deep threads (e.g. JIC) jam the pump pressure regulator spring.
  • Drain hose to the highest of pump ports L1/L2, back to one of the three 1/2" BSP tank drains.
  • Suction: reinforced non-collapsing hose, 2-2½" SAE 3000 PSI at the pump inlet; avoid sharp 90° elbows or T-pieces near the pump. Pressure: 1-1¼" SAE 6000 PSI from pump outlet to the free 1" BSP port on the high-pressure filter.

Seawater Cooling

  • Internal oil coolers are CuNi 90/10 coils needing approx. 15 l/min seawater, max. 17 l/min (more flow damages them over time). External coolers take 30 l/m or more depending on model.
  • The Sleipner centrifugal seawater pump gives approx. 30 l/m. It is not self-priming: mount it below the water line, rotor axis horizontal, feet down, pressure port up, close to the intake, with hoses rising continuously from through-hull to pump and from pump to discharge. Do not discharge into the engine exhaust; do not take cooling water from the main engines. Use a forward-facing scoop intake.
  • Do not mount the motor under the cooling pump (condensation). Bond the pump. Route the 10mm condense/drain tube to the bilge.
  • Cooling pump starts at 50 degrees C oil temperature; oil temperature alarm at 75 degrees C.
  • Priming before sea trial, start-up or after the boat has been out of the water: open the intake ball valve, loosen the bleed bolt until water flows, then retighten – 5Nm on hydraulic/ECI DC pumps (fibre washer), 12Nm on DC pumps (copper washer).

Fill-up and Start-up

  • Prime the pump(s) through the upper drain port before filling the tank.
  • Fill through the filler/breather with a filter trolley (10 micron). New mineral hydraulic oil ISO VG46 only (ISO 11158 Class HV / DIN 51524 Part 3 Class HVLP); ISO VG32 on systems without stabilizers operating in Arctic conditions.
  • Oil level approx. 3/4 full, or the middle of the upper sight glass indicator – no higher. Running pumps without oil is not covered by warranty.
  1. Secure the vessel, disconnect all electrical plugs from the valve block and centre the manual levers.
  2. Start the engine(s)/pump(s) at idle: standby pressure at the valve gauge should be 18-22 bar. No pressure means the pump probably turns the wrong way – stop immediately. If OK, run approx. 30 sec, stop, check oil level and leaks.
  3. Restart and run each thruster at approx. 30% both ways with the manual lever until air is purged; recheck oil and leaks.
  4. Run each consumer separately at full power and check pressures against the system manual and the filter indicators.
  5. Reconnect the valve plugs. Standby pressure must stay below 40 bar; oil temperature should not exceed 60° C (over 90° C can seriously damage components).

Servicing

  • Check filter dirt indicators (A and G) and oil level periodically; a large consumer must run at full speed for the dirt gauges to read.
  • Replace oil and filters after the initial start-up and test period, then every 2000 engine hours / every 3 year – sooner if the oil is discoloured or smells.
  • Once a year drain a little oil from the tank drain plug to remove sediment and water, and check hoses and fittings for wear and leaks (more often on commercial vessels).
  • High pressure filter: unscrew the bowl (B). Return filter: open the top cover (H) and retighten the three bolts. Use clean tools and catch the spill.
  • Cooling, on the water: every 2nd week set the cooling pump to "Always on" in the thruster control panel with intake valves open (engines running for hydraulic cooling pumps) and run it 5 minutes.
  • Cooling, on land for more than two weeks or in frost: blow the seawater side through with compressed air and remove the cooler and cooling pump drain plugs.

Troubleshooting

Symptom Cause / action
No standby pressure with pump(s) running Pump drive direction incorrect – stop the pump(s) immediately and contact Sleipner.
Max pressure only 20-30 bar when running a consumer LS hose missing or on the wrong port (pump "X" to valve "LS"); red emergency STOP on the info panel activated (press again to release); pump not connected to the PTO or clutch not engaged; wrong drive shaft size.
Standby pressure above 40 bar LS hose connector jamming the regulator spring – use a shorter connector (JIC threads can NOT be used).
Oil level too low Find and fix the leak, then refill. After start-up the level should not change.
Oil temperature too high Stop using the system until below 60ºC. Check 15-17 l/min cooling water at max 30ºC, clean strainers and open valves; check no consumer runs unintentionally and no relief valve is open (howling/whining sound).
Thruster runs the wrong way On/off control: swap the blue and grey wires from the panel, or swap the hoses between valve and thruster. Proportional control: turn the joystick 180 degrees or swap the hoses.
Reduced thrust Grids, sharp tunnel openings, deep tunnel installation or fouling on propeller, gear leg or tunnel; blocked filters (indicator red). Do not change performance settings without contacting Side-Power.

Filter Elements and Cooling Pumps

Sleipner combined stabiliser/thruster hydraulic rack spare parts drawing

Filter elements by tank

Art. # Description
10 2572 Return filter element TTF3 – 40L tank (2012>) and 25L standalone Ask us to source it →
10 2574 Return filter element TTF6 – 55/60/90/95/120L tanks (2012>) and 75L standalone Ask us to source it →
10 2582 Pressure filter element (PTO) EPF22 – 40L and 55/60L tanks (2012>) Ask us to source it →
10 2584 Pressure filter element (PTO) EPF32 – 90/95/120L tanks; 90/120/250 L (2012>) Ask us to source it →
10 2604 Pressure filter element (AC) 245LEN063 – 40, 55/60, 90/95/120L tanks and 75L standalone Ask us to source it →
10 2609 Pressure filter element 245LEN040 – 25L standalone Ask us to source it →
10 2521 Return filter (H) – 40/60/90/120 L tanks, <2012 Ask us to source it →
10 2523 High pressure filter (B) – 40/60 L tanks, <2012 Ask us to source it →
10 2519 High pressure filter (B) – 90/120 L tanks, <2012 Ask us to source it →

Give the filter product code or serial number when ordering filter elements.

Cooling pumps and drive couplings

Art. # Description
10 2376-1 ECI DC cooling pump 24V - 1" Ask us to source it →
10 2376-34 ECI DC cooling pump 24V - 3/4" Ask us to source it →
10 2377-12V DC cooling pump 12V Ask us to source it →
10 2377-24V DC cooling pump 24V Ask us to source it →
10 2357 Hydraulic cooling pump Ask us to source it →
10 50R24-S Drive coupling element – 5,5Kw Compact (frame 112, Ø28mm shaft) and 7,5Kw Compact (frame 132, Ø28mm shaft) motors Ask us to source it →
10 50R28-S Drive coupling element – 5,5Kw (frame 132, Ø38mm shaft) and 11Kw Compact (frame 132, Ø38mm shaft) motors Ask us to source it →
10 50R38-S Drive coupling element – 11Kw and 15Kw (frame 160, Ø42mm shaft) motors Ask us to source it →
10 5028-R Drive coupling element – standalone 25L/75L powerpack Ask us to source it →

Sleipner standalone 25L/75L hydraulic powerpack spare parts drawing

Oil cooler and oil cooler element: give the part serial number when ordering. Hydraulic hoses: the part number is taped to the hose itself.

Need a part that isn't listed? Ask us to source it and quote the part number from the PDF.

Products in this Manual