'S1' Series Stainless Steel Shaft Drive Propellers INSTALLATION
Contents
1. INSTALLATION AND OPERATING INSTRUCTIONS Index eee Foreword 2 aussen nn een nn A 1 Getting to Know Your Propeller Parts 0fl Z Pre installation check 0 tte Fitting your AUTOSTREAM propeller o ooooooooo s Anti fouling the propeller 2 2 aaa nas 7 Operating instructions 0 0 0 0 cee ees Sea Trials amp Pitch Adjustment 0 00 0 ccc oso Shaft Generators and Electric Motor Regeneration 1C Recommended Greases o occocccoo ernennen nenne 1C Recommended Propeller Nut Torque Wrench Settings 1 Machining the Taper o o ooooocoronoooro o 1 Removal of Propeller 0 0 naaa ee ee ee eee 1 Servicing oooooomooccooocoosaa o a 1 Replacing the Zinc Anode o o oocoococoonoo ee Ti Replacing the Blade Bearings and or O ring Seals 1 Contact Details o Inside Back Cove Foreword At first glance it may appear that installation is complex this is not the case These instructions are very detailed to assist a person without any trade skills to successfully fit amp adjust our propellers Please read and follow these instructions carefully Failure to do so may result in unsatisfactory performance vibration additional slipping haul out costs loss of propeller or voiding your 5 year warranty Our experience has shown most problems s2. coocococcconcccccnoonncononcnonnonons Purchase Date oooconoccccccccccccoccnoooccnononanononnnos nn e Nm A i IN 0 gt gt EIERN BEER BE SL E E qate email E teaicla EE E leida Contact Details The team at SEAHAWK would like to thank you for purchasing your AUTOSTREAM propeller and wish you many years of happy and trouble free sailing If we can help you in anyway if you would like some clarification on these instructions or if you would like some advice please do not hesitate to contact us We also invite you to comment on your experiences with your AUTOSTREAM propeller once you have spent some time using it Seahawk Pty Ltd www seahawk com au 41 London Drive info seahawk com au Bayswater Vic 3153 Phone 61 3 9761 1633 AUSTRALIA Fax 61 3 9761 0727 kta
3. corrosion 30 Your installation is now complete Anti fouling the propeller Modern self abating anti fouls will not last very long if the boat is used under power fe extended periods of time We suggest if the boat is moored for long periods especially in high fouling areas that th propeller be anti fouled If the boat is mainly used in clean ocean water anti fouling is not usually required If anti foul is used on the propeller e Rough the surface of the blades slightly with sandpaper or similar and apply suitable primer followed by several coats of a good quality hard antifoul paint e NOTE When applying the paint do not allow a heavy uneven build up of paint t occur at the leading and trailing edges of the propeller blades Try to keep the tot paint thickness reasonably uniform over the blade surface A heavy build up paint on the trailing on one side of a blade can cause an uneven water flow ove the blade and the blade may not feather true fore and aft which could cause th propeller to rotate under sail if the gearbox was left in neutral e Do not paint the tail cone anode or grease nipple Do not allow paint to run into the blade journals and restrict the ease of blad movement Operating instructions peration under engine power Operate your sailboat under power as though it has a fixed blade propeller The propeller blades will orientate automatically when the engine is enga
4. more curved The leading edge is identified with a label when the propeller is originally shipped from the factory Note how freely the blades rotate when turned by hand The blade resistance to turning should feel the same after the propeller is fitted Tools and parts required for installation 6mm Hex Key supplied with the propeller Grease cartridge supplied with the propeller Loctite Grade 262 supplied with the propeller Locking wire supplied with the propeller Locking pin 3 supplied 2 are spare Propeller nut supplied with the propelle Stainless steel shaft key supplied with the propelle Grease gun not supplied Pliers for lock wire not supplied Socket wrench 1 2 square drive not supplied Soft faced hammer or block of wood not supplied Small hammer and punch not supplied Tools required for Pitch Adjustment 5mm Hex key supplied with the propeller 17mm 11 16 wrench supplied with the propeller Required to remove refit zinc anode 9 16 14mm wrench not supplied Spares supplied with the propeller 1 x spare Zinc 4 spare O Ring Seals 2 spare Locking Pins Fitting your AUTOSTREAM propeller J IN NOTE For fitting and removal of the propeller the Propeller Cy Body is separated into two halves as per FIG 1 The Blade lt Assembly which supports the blades and the Drive Assembly which houses the drive gear and shaft nut Note DO NOT remove the Nyloc nut that s
5. one or more of the blades are not aligned remove all of the cap head screws and then refit only two screws diagonally oppo site each other screwing in only one turn This will allow you to pull the blade assembly away from the drive gear and move the blade s that are not in the correct position you may need to wob ble the blade assembly slightly if the blade does not turn An roblems must be rectified NOW Poor performance serious vibration or an inability of the propeller to feather will result if the above points are not correct 27 When all is correct tighten the six cap head screws to 20Nm 15ft lbs torque and fit the lock wires as per FIG 13 28 At this stage you should rotate the blades fully from stop to stop o and back again to check that the propeller mechanism feels the same as it was when checked during the pre installation check 29 Grease the propeller with Valvoline Val Plex M or equivalent through the grease nipple at the end of the zinc anode until grease appears at the blade journals or forward end of the propeller Work the propelle back and forth between forward and reverse a number of times to disperse the greas within the propeller Recommended Greases are listed at the end of these instructions t select an appropriate replacement grease Y NOTE It is important that the propeller is well filled with grease This prevents marin growth inside the propeller and stagnant water forming that can promot
6. ccommodate is 25mm 1 diameter For more information on shaft tapers and overall dimensions of propellers contact Seahawk contact details are listed at the rear of this booklet Removal of Propeller Removal of the propeller is basically the reverse of installation 1 Turn the propeller blades to the feathered position 2 Cut the locking wire and remove from the six cap head screws 3 Using a soft face hammer or small block of wood knock the blades gently to removi the blade assembly taking care not to drop it 4 Firmly secure the propeller shaft 5 Using a Io drive socket wrench apply firm pressure to undo the propeller nut You wi need to overcome the locking ability of the Loctite and shear the locking pin bras tube Once the pin shears and the Loctite lets go the nut can be unscrewet normally USE CARE THE SHARDS OF THE SHEARED PIN ARE VERY SHARP 6 Remove the drive assembly of the propeller with an appropriate puller DO NOT attempt to knock the propeller drive hub off the shaft with a hammer or punch Do not apply force in any way to the body of the propeller as this will damage it Any force applied to remove the propeller must be on the end of the drive gear KT 7 only FIG 16 7 Remove the key from the keyway and store to prevent loss FIG 16 8 Carefully remove all of the very sharp shards of metal from the old locking pin reassembly Failure to do this will result in the o
7. ch Torque wrench settings are liste later in this booklet if required 2777719 Check that the hub has returned up to or beyond the mark you made in step 10 on the shaft If not the key is probably 4 fouling and must be corrected The most common problem is the key Sitting too high out in the shaft Refer step 11 gt 1500 Check that ONE set of grooves between the nut and inside of the gear aligns to form a hole If none align continue to tighten the nut slightly until one set of grooves do line up FIG 7 4 21 Insert one of the supplied locking pins into the hole formed by the two aligned grooves Using a small hammer and punch gently tap it all the way in until the end is flush with the front of the gear FIG 8 NOTE Take care not to hit the gear damage may interfere with the operation of your propeller 22 Check that the propeller hub still rotates freely around the drive gear between the pitch stops If not locate the problem and rectify before continuing 23 Align the mark at the front of the drive gear with the appropriate R or L mark on the hub The R alignment is for a RH rotation pro peller Clockwise rotation when viewed from astern to propel the boat ahead The L alignment is for a LH rotation propeller FIG 9 shows a left hand setup 24 Prepare the six cap head screws by ensuring they are clean and applying a little grease to the threads and underside of
8. damage to the threads must be rectified Forcing a stainless steel nut wil result in the nut seizing onto the shaft which is difficult to rectify Complete both of checks I and Il of step 13 BEFORE taking any action 13 The nut when fitted correctly should be approx 2mm 1 12 inside the end of the gear FIG 4 If it is flush with or protrudes outside of the gear this is not correct There are two probable causes I If shaft taper is smaller than the propeller taper the shaft taper will protrude too far through the drive gear This causes the nut to tighten against the step on the shaft before securing the gear and propeller to the taper Check that the step on the shaft at the end of the threaded sec tion A is below the step in the gear that the nut tightens against B FIG 5 If the shaft section A does protrude beyond the step on the gear B then the drive gear and shaft tapers do not match the drive gear will need to be replaced with one of the correct matching taper or the shaft taper will need to be modified contact Seahawk for assistance OR II It is also possible that the thread on the shaft is too long and bottom ing out in the end of the nut before securing the propeller to the shaft Check that the end of the propeller shaft is at least 18mm 11 16 inside the drive gear when it is installed on the shaft taper as per FIG 6 If the taper is correct but the thread is too long shorten the threaded section o
9. e done while still in the water In normal use the zinc anode should last between 6 amp 18 months If your zinc anode is lasting less than six months have your boat checked for an electrical leakage problem Undo the 14mm 9 16 Nyloc nut at the grease nipple and slide the anode off Clean the area where the zinc anode is mounted with sandpaper or a wire brush Fit the new zinc anode and tighten the Nyloc nut 14mm 9 16 wrench required NOTE We recommend that you still use a shaft anode to protect the shaft and the propeller hub Replacing the blade bearings and or O ring seals Rotate the blades to the feathered position and remove the six 6mm cap head screws Tap the leading edge of the blades with a soft faced hammer to separate the blade assembly from the drive assembly taking car not to drop it FIG 17 3 With a wire hook or similar pull the blade O ring seals out of their grooves and roll them over the flange at the base of the blade so they ure not sitting in between the blade and the propeller body FIG 17 Remove the zinc anode tail cone by undoing the 14mm 9 16 nut and sliding it off then partly replace the nut to protect the yrease nipple Support the blades and use a soft faced hammer or small block of wood to gently tap the zinc annode retaining nut to separate the two blade assembly halves If replacing just the O rings proceed directly to step 13 6 Remove the bronze bearings from the blad
10. e spigots by carefully filing through them until they split Clean up the blade spigots where the bronze bushes go with fine abrasive paper 8 Clean up all bearing and seal surfaces paying particular attention to the areas where the O ring seals are positioned Identify the end of the new bush that has a small internal step This end of the bush should be placed furthest from the gear on the blade 10 Fit the new bearings using a little Loctite grade 603 Wipe off any excess Loctite and leave to cure 11 Remove the old Delrin plastic bearings and clean the journals where they are located 12 Lightly grease and fit the new bearings with the flange of the bearing placed up against the blade gear face 13 Fit new O ring seals over the blade gears and then roll them up and over the flange 14 Reassemble the blade assembly Ensure that the numbers stamped on the blades match the corresponding numbers on both sections of the propeller hub 15 Fit the zinc anode and nut tighten the nut using care not to over tighten 16 After assembling the blade assembly rotate the blades to either the forward or reverse position and push the blade O ring seals over the blade flange into their correct positions 17 Refit the blade assembly as per steps 23 to 29 of the Fitting your AUTOSTREAM Propeller section Notes and Important Data Propeller serial number soseen Nut size amp thread sonia das Shaft Size amp Taper c
11. ecures the cone shaped zinc anode to the blade assem bly as this is all that holds the blades and mechanism together when the cap head screws are removed Remove the six cap head screws using the 6mm hex key supplied 2 Rotate the propeller blades to the feathered position and as shown in FIG 2 support the blade assembly on your wrist while grasping the drive assembly front of the propeller body Using a soft face hammer or small block of wood gently tap the edge of the blades to separate the propeller blade assembly from the drive assembly taking sare not to drop either section ollow steps 3 to 8 ONLY if the taper is NOT already machined and you need to remove the main gear for boring and keying Otherwise skip to Step 9 FIG 2 Carefully measure and record the amount of thread protruding from the lock nuts on the two itch adjusting screws This will allow you to set the pitch back to the factory setting Loosen the locknuts on the pitch adjusting screws slightly and unscrew the pitch adjusting screws about 6mm 1 4 using the hex key supplied The drive gear which is now held in only by the rubber O ring can be pushed out of the hub from the front end opposite end to gear A little soapy water or oil will assist if the o ring will not slip off Remove the two halves of the Delrin thrust ring bearing 7 Have the taper and key machined to suit your shaft Refer to machining the taper information section Reass
12. emble in reverse order of the sequence used to disassemble When re assembling ensure parts are clean and greased The gear must rotate freely after assembly The o ring is greased and simply stretched into position and pressed down gently in with fingernails or a blunt object Screw pitch adjustment screws back to their original settings and lock up the nuts Do not excessively tighten the lock nuts If fitting a propeller with the taper already machined resume installation here Check that the taper matches the shaft correctly by gently sliding the drive assembly onto the shaft without the key in place Feel for any miss match of the tapers by attempting to wobble the drive assembly on the shaft it should sit snugly on the shaft with no movement 10 Accurately mark the propeller shaft with a felt tip pen or similar at the forward end of the gear assembly to indicate where the gear assembly should be after properly fitted FIG 3 11 Remove the drive assembly and fit the key to the keyway then repeat step 9 ensuring that the drive assembly returns to the same position as marked before the key was fitted If the key interferes with the fit of the Jrive assembly on the taper carefully file the area of the key that is fouling until the drive assem ly fits correctly Usually the top section of the key is too high FIG 1 12 Check that the propeller nut screws on to the shaft thread freely by hand Do not forci the nut Any
13. f the shaft by cutting off the end Be sure to remove any burr from the end of the shaft and clean up the threads if you have shortened it Any miss match must be rectified NOW Damage to shaft and propeller or total loss of propeller could result if the taper nut or thread is incorrect in anyway 14 Remove the drive assembly 15 Ensure that the threads of the propeller shaft and nut are clean and dry If necessary clean the threads with a wire brush and solvent cleaner to remove any paint or old Loctite y Failure to remove the old Loctite from a previously fitted nut and shaft will result in th old Loctite effectively wiping any new Loctite off as the nut is refitted and this reduce the locking ability NOTE Read steps 16 to 22 before performing them These steps must be complete in turn without delay Once the Loctite has had a chance to set the nut will becom difficult to remove if necessary 16 Refer to the instructions 4 cautions on the Loctite bottle Carefully apply 3 or 4 drops Loctite to both the threads of the shaft and the nut taking care to not apply too much should not be dripping off the threads Ensure you do not get Loctite on the shaft taper a it will make the propeller extremely difficult to remove in the future 17 Refit the drive assembly to the shaft 18 Fit the nut and firmly tighten to the correct torque noted on the tag attached to the ni when shipped using a 1 2 square drive socket wren
14. ged in either forward or reverse The propeller will go into reverse at high speed if required for emergency stopping It will not damage the propeller but continued high speed direction changes will accelerate the wear on both the propeller and your drive train CAUTION Autostream propellers are much more efficient in reverse than other types of propellers take care reversing in confined areas as you may be doing 3 to 4 times the speed for the same rpm that you were with your old propeller Feathering the propeller To feather the propeller drive ahead at a speed slightly greater than the speed the boat is currently sailing at this will ensure the propeller is in the ahead position so it will feather correctly Switch off the engine whilst still engaged in forward gear After the engine has stopped momentarily engage reverse gear this will prevent the propeller shaft rotating and the propeller will feather lo check if the propeller is feathered put the gear lever in neutral the propeller shaft should ot rotate f it does then the propeller is not feathered and the procedure should be repeated Once feathered the gear lever can be left in any position and the propeller will not come out ii the feathered position until the propeller shaft is rotated by the engine This procedure is affective for both hydraulic and mechanical transmissions NOTE When first filled with grease the movement of the propeller blades will be a litt
15. ld Loctite effectively wiping any ne y Remember to clean up all of the old Loctite from the nut and propeller threads befor Loctite off as the nut is refitted and it will not have any locking ability Servicin If installed correctly your AUTOSTREAM propeller will give you years of trouble free service The service requirements are minimal and all that is required is Periodic cleaning of the propeller and inspection of All nuts and screws for tightness The blades and propeller body for damage Blade O rings for damage from fishing line etc See following section to replace O rings Zinc Anode this should be replaced when down to 25 of its original size Check the blades for excessive play and renew the bearings if necessary Note A little pla is normal it takes many years of regular use for the bearings to start showing signs wear See Replacing the blade bearing and or O ring seals later in this booklet to change bearings Grease the propeller once a year this can be done under water via the grease nipple in th nose of the propeller Fill with grease until it can be seen appearing around the blade seal Work the propeller back and forth from forward to reverse to distribute the grease NOTE The propeller may take a little longer to feather until the grease has distribute itself Replacing the Zinc Anode The zinc anode should be replaced when eroded down to approximately 25 of its original size his can b
16. le stiff until the grease is dispersed inside the propeller body Until this happens the time it takes for the propeller to feather may be a little longer Going from forward to reverse at idle about 10 times will help disperse the grease quicker NOTE The propeller will only feather from the ahead position Note for high speed use Autostream propellers have been regularly tested at speeds over 25 knots and have been proven to stay feathered under normal conditions It is highly recommended when sailing at high speeds that the gearbox is left in neutral This will prevent potential engine damage should the propeller be forced out of the feathered position by a foreign object in the water Sea Trials amp Pitch Adjustment he propeller pitch is generally preset using the information supplied when your propeller was ordered However fine tuning will achieve optimum performance he pitch is correct when the engine just reaches the engine manufacturers maximum Ontinuous rated rpm under flat water conditions Over revving is not enough pitch while black smoke or lugging is too much pitch Half a turn of the pitch adjusting screw will make about 150 rpm alteration on most E Installations Reverse rarely needs adjustment and is set at a finer pitch than forward to assist wit control and minimise sideways prop walk To adjust the pitch slightly loosen the lock nut of the screw you wish to adjust Refer to th picture
17. s below using the supplied 17mm wrench Turn the screw in the required directio using the supplied 5mm hex key and retighten the locking nut Use caution not to ove tighten the lock nut NOTE The propeller can be in any position while adjusting the pitch There is R and F marks by the pitch adjusting screws to indicate the forward or revers pitch adjusters for the initial factory set up Ifthe prop rotation has been reversed at any tim these will be reversed also The Rule of thumb and pictures below will always be correc RULE OF THUMB When the propeller is covered in anti foul or while underwater the adjuster markings at impossible to see the following rules always apply With the pitch adjusting screws on the same side of the propeller as the direction of rotatior when looking ahead left side for left hand or counter clockwise rotation and right side fc right hand or clockwise rotation The UPPER adjuster is for FORWARD screw IN to INCREASE pitch The LOWER adjuster is for REVERSE screw OUT to INCREASE pitch Left Hand Rotation AHEAD Adjustment Screw in to INCREASE pitch ASTERN Adjustment Screw in to DECREASE pitch Right Hand Rotation AHEAD Adjustment Screw in to INCREASE pitch ASTERN Adjustment Screw in to DECREASE pitch Shaft Generators and Electric Motor Regeneration As the propeller will not feather from the reverse position this feature can be utilized to drive the shaf
18. t for power generation To engage the propeller start the engine and briefly reverse as you begin to sail off then select neutral and shut down the engine The propeller blades will now stay in the reverse position and rotate the shaft To feather the propeller when required simply follow the normal procedure for feathering as described previously Recommended Greases Any light multi purpose lithium based grease particularly if labelled as suitable for marine ise is suitable for use in your AUTOSTREAM Propeller Extreme pressure grease can be used but is not required A few alternatives are Valvoline Val Plex M grease Mobil Mobilgrease XHP Castrol LMX Spheerol AP or LMM Total Lubmarine EPEXZ i N NOTE It is important that the propeller is well filled with grease This prevents marine c growth forming inside the propeller and stagnant water forming that can promote COrrosion Recommended Torque Wrench Settings For Propeller Nuts ser Sof M6 65Nm O Wa 75fts M20 100Nm O 78 tooftys M22 115Nm 00 ftMb s M24 1350m Machining the taper used Tapers for shaft sizes to 32mm 1 1 4 diameter can be machined in the normal manner Tapers to suit shafts over 32mm 1 1 4 diameter up to 38mm 1 1 2 diameter must be blind bored so as to leave a shoulder for the nut to tighten against lf your propeller was supplied with a Blank nut the maximum thread size it will a
19. tem from not following these instructions Avoid potential frustration and read on SONDUTROD Zinc Anode Nyloc nut Grease nipple Zerk fitting Grease tube Cap head screw Blade Blade O ring Delrin thrust bearing Drive gear 10 11 12 13 14 15 16 17 18 h SOONAMNAWN Bronze blade bush Delrin blade bush Pitch adjuster Pitch adjuster lock nut Stop lug Lock wire Drive Assembly Blade assembly Propeller shaft Grease cartridge Brand amp Packaging Varies 17mm Wrench Locking wire Locking Pins 3 Blade amp hub O rings 4 Propeller Nut Spare zinc anode 5mm Hex key 6mm Hex key Loctite Type 262 Package Varies Stainless steel key Before proceeding please read the conditions of the 5 year warranty STOP and remember to send in your warranty registration If no registratio is received the warranty will apply from the date that the propell was shipped from the factory You can register your warranty on line or send in via post or fax you will find all the details at the rear of this booklet Pre installation check The points below must be the same after installation Before disassembling the propeller note the leading and trailing edges of the blades when they are in the feathered position that is when the blades align for and aft along the centre line of the boat The leading edge is the straighter edge while the trailing edge is
20. the cap heads Note New propellers are supplied with a brown anti seize compound already on the threads for your convenience This should be left in place 125 While ensuring the leading edge of the blades are facing ahead asin FIG 1 turn all three blades to the feathered position as pictured in FIG 10 26 Align the number 1 on the hub with the number 1 on the pro peller body FIG 11 Fit the blade assembly and fit the six cap head screws tightening only finger tight at this stage IMPORTANT CHECKS Y Check that the alignment marks are still aligned left or right as applicable while the three blades are still in the feathered position as per step 23 amp 25 Fig s 9 amp 10 he Rotate the propeller so the blades rotate 90 degrees from the feathered position and check that the edges of ALL 3 BLADES align with the join in the two sections of the blade assembly of the propeller as pictured in FIG 12 y Y Check that the blades rotate freely from the forward stop to the reverse stop If movement is not free then the propeller must be dismantled and checked for the reason The most likely cause is the index numbers on the propeller assemblies not lined up as per step 26 4 FIG 11 or the propeller blade assembly has been disassembled and reassembled with the index marks out of alignment Refer step 13 of Replacing the blade bearings and or O ring seals later in this booklet TIP If
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