Service Manual - TiltRotators UK
Contents
1. Switch off the power when working with the electrical system and remove rings watches etc before starting work Risk of personal injury CAUTION Never use your hands to check for leaks in the hydraulic system Hydraulic oil under pressure can penetrate your skin causing serious injury CAUTION Implements connected to the tiltrotator may not be used under any circum stances unless correctly locked into place ALWAYS make sure that the lock bolts protrude according to the specifi cation for the relevant quick hitch CAUTION Never attempt to upgrade the equipment s maximum capacity by making modifi cations without the supplier s approval CAUTION Short circuits in electrical cables can cause injury and burning Insulate electrical conductors and parts carefully when installing electrical equipment CAUTION Risk of burn injuries from hot hydraulic oil CAUTION The machine must never be operated with the implement lock switch turned on except when attaching or detaching a bucket or implement CAUTION If in any doubt regarding the machinery or the safety features contact an engcon dealer or engcon Nordic AB CAUTION Risk of catching in moving parts engcon Page 5 Service Manual Tiltrotator Rotator EC10 30 Technical data Technical data General data EC10 EC15 EC20 EC30 Max machine size kg 12 000 16 000 22 000 32 000 Max breakout kNm 90 130 180 240 Max bucke2. 10 Put the cover over the directional valves EC15 1 2 Remove the cover over the directional valves Mark out the positions of the power plugs on the rotation valve then remove the power plugs Disconnect the directional valve for rotation Plug any open connections Page 38 engcon Service Manual Tiltrotator Rotator EC10 30 5 Checking of axial play Perform steps 3 8 according to the instructions for EC10 6 Attach the directional valve for rotation 7 Attach the power plugs on the rotation valve following the markings made 8 earlier Put the cover into place over the directional valves EC20 amp 30 Ti Perform steps 3 8 according to the instructions for EC10 Axial play worm screw Remove the grease nipple from the screw housing for the worm screw Turn the lower part clockwise to make sure that worm screw reaches to the bottom Attach the gauge for checking the axial play and set it to zero resting it against one of the fl at surfaces Fig 34 Gauge for checking play NOTE While checking the play make sure that the lower part and the frame do not rotate in relation to each other 4 Turn the lower part clockwise and check that the play is within the specifi ed tolerance If there is too much play the worm screw must be reshimmed Reshim according to the instructions in the section Worm screw Removal attachment Remove the gauge and i
3. 13 Remove the indicator rod 14 Remove the tool springs by bending them upwards Hold the springs firmly in place to avoid losing them 15 Remove the guide pins from the locking wedges 16 Remove the screws from the lock cylinders 17 Mark the position of the hydraulic tubes on the lock cylinders 18 Remove the hydraulic tubes 19 Plug all open connections 20 Ta bort l scylinder med l stappar 21 Remove the lock cylinder and latch bolts 22 Plug all open connections 23 Remove the connector block on the swivel and lock tubes 24 Plug any open connections 25 Undo the screws for the hitch and remove it 26 Remove the screw housing shims and axial washer 27 Remove the worm screw 28 Remove the axial washer and the support ring engcon Page 25 Service Manual Tiltrotator Rotator EC10 30 Worm wheel 29 Remove the lock clasp applies to ec 10 only and the screws for the valve block 30 Remove the valve block with the swivel Fig 18 Valve block swivel 31 Remove the screws for the centre ring 32 Lift off the centre ring and worm wheel 33 Separate the worm wheel from the centre ring 34 Remove the shims 35 Remove the wear washer 36 Check all wear parts for damage and wear Replace any damaged or worn parts Replace all seals If there is too much play between worm screw and worm wheel the play can be reduced by turning the worm wheel half a turn Page 26 engcon Se
4. NZ YN engcon Service Manual Tiltrotator Rotator EC ECR10 30 The noble art of digging Version 1 0 Service Manual Tiltrotator Rotator EC10 30 Table of contents Safety regulations General information eene tnnt 4 Cautions Technical data General information ccscccsssssseccscssssssescsescsssseesecscseseeeeesseaeseenseees 6 Tightening Permitted play Tiltrotator rotator EC10 30 Tilt cylinder I emoValz istetense munere ente ILLE E Dismantling Assembly tn en ete nena tester Attachment Grab cylinder ReinoVal aita etistn aie icti ie dr n dere dr radica Erden asl e ag 12 Dismahtlintg ariete tatit RER 13 Assembly Attachment ettet tnter tn stein tritt enata sss 15 Directional valve Removal esent nnne nennen tris tern tnn 16 Attachment esis eco xU ee UU LU DEUM E 17 Head FROMMIOV Al eciam teretes tata tuners siete ertet del 18 Attachtment ic cn e tici ees tare deno 18 Hydraulic motor Femoyalz iu cuite te oe ede RE RF D a 20 Attachrieritasuiu teen ient itti ec ihid 20 Worm screw S GIO cicer ise tet interfecti asina odi nein m E Emi UIDES 21 Attachment i rette scere e era 22 Worm wheel Reimovalis ettet tent IE eet miden re tease i desi E 25 Nice du 0 Ser 27 SHIMNING Re 33 Reverse assembly seis setenta tantes tantas 36 Checking of axial play Axial play worm wheel Axial play worm screw
5. engcon Page 3 Service Manual Tiltrotator Rotator EC10 30 Safety regulations Safety regulations General information Cautions Key to terms In this service manual the terms CAUTION NB and NOTE are used as fol lows CAUTION The term CAUTION signifi es that incorrect procedures can cause personal injury The term NB signifi es that incorrect procedures can cause material damage NOTE The term NOTE highlights important user instructions The service manual describes the repair and inspection operations that can be performed on tiltrotators rotators ec 10 30 The safety regulations apply regardless of which base machine is used Also see the safety instructions for the base machine and other equipment used Also see the safety information in the instruction manual Make sure you have read and understood all the cautions before undertaking any maintenance operations The cautions explain potential risks and how to avoid them If in any doubt contact your employer or the supplier Expert advice can elimi nate many unnecessary risks CAUTION Incorrect installation can pose a safety risk If in any doubt contact an engcon dealer or engcon Nordic AB CAUTION Make sure that the hydraulic system is free of pressure before starting work on the system Risk of personal injury Page 4 engcon Service Manual Tiltrotator Rotator EC10 30 gt e PRE Safety regulations CAUTION
6. high degree of cleanness NOTE The number of washers and shims may vary depending on the model 1s ook Wn Remove the motor according to the instructions in the section Hydraulic motor Removal Remove the screw housing shims and axial washer Remove the worm screw Remove the axial washer and the support ring Check all wear parts for damage and wear Replace any damaged parts Knock out the bushes for the worm screw and attach new ones using a suitable tool engcon Page 21 Service Manual Tiltrotator Rotator EC10 30 Worm screw Attachment The guide pin in the frame should be aligned with the notches in the support ring and axial washer NOTE The number of washers and shims may vary depending on the model 1 Attach the support ring and the axial washer Fig 15 Guide pin frame 2 Attach the worm screw making sure that the support ring and the axial washer do not slip out of place The guide pin in the screw housing should fi t the axial washer Page 22 engcon Service Manual Tiltrotator Rotator EC10 30 Worm screw 3 Attach the axial washer shims and screw housing for the worm screw Fig 16 Guide pin screw housing 4 Turn the lower part clockwise to make sure that the worm screw reaches to the bottom 5 Install the indicator and the tool in the grease nipple hole in the screw housing Set the indicator to zero Fig 17 Installation indi
7. of the cylinder 2 Clamp the cylinder in a vice 3 Remove the check valve and the plug Fig 8 Plug and check valve grab cylinder 4 Undo the oylinder nut 5 Pull out the piston rod along with its seals NOTE The piston is fi xed into place with Loctite If necessary heat gently to facilitate removal 6 Disconnect the piston from the piston rod 7 Remove the cylinder nut from the piston rod engcon Page 13 Service Manual Tiltrotator Rotator EC10 30 Grab cylinder Assembly 1 Check the piston rod piston and cylinder for damage or scratches Replace any damaged parts 2 Replace all seals 10 p Fig 9 Grab cylinder diagram 3 Lubricate the seals in the cylinder nut with clean hydraulic oil and replace it on the piston rod 4 Apply lock solution to the piston and attach it to the piston rod 5 Make a punch mark on the bottom between the piston and the piston rod to secure the piston 6 Lubricate the new seals on the piston with clean hydraulic oil and insert the piston rod into the cylinder 7 Screw the cylinder nut into place 8 Attach the plug with a new O ring 9 Attach the check valve with a new O ring Page 14 engcon Service Manual Tiltrotator Rotator EC10 30 Grab cylinder Attachment 1 Attach the grab guard 2 Attach the grab cylinder 3 Attach the nut for the rear coupling 4 Attach the shaft for the grab cylinder with spacers and a lo
8. a for the relevant model If the play exceeds the tolerance the rotator must be reshimmed 9 Remove the dial indicator with a suitable tool and replace the plug in the frame 10 Attach the valve block with the swivel turning the connections away from the machine Fig 23 Valve block swivel 11 Attach the lock clasp EC10 for the valve block NB The guide pin in the frame should be aligned with the notches in the support ring and the axial washer 12 Attach the support ring and the axial washer engcon Page 29 Service Manual Tiltrotator Rotator EC10 30 Worm wheel Fig 24 Guide pin in frame 13 Attach the worm screw Make sure that the support ring and the axial washer do not slip out of place The guide pin in the screw housing should fi t the axial washer 14 Attach the axial washer shims and screw housing for the worm screw Fig 25 Guide pin in screw housing Page 30 engcon Service Manual Tiltrotator Rotator EC10 30 Worm wheel 15 Turn worm wheel clockwise 16 Install the dial indicator in the hole for the grease nipple in the screw housing using an appropriate tool Set the dial indicator to zero Fig 26 Installation dial indicator NOTE While checking the axial play make sure the worm wheel and worm screw do not move in relation to each other 17 Turn the worm wheel clockwise and check the axial play Check the maximum permitted play in th
9. catching in moving parts 5 Remove the lock screw on the cylinder shaft and remove the cylinder shaft Fig 4 Cylinder shaft 6 Disconnect the yoke coupling turned away from the machine and remove the tilt cylinder engcon Page 9 Service Manual Tiltrotator Rotator EC10 30 Tilt cylinder Dismantling Assembly All work that involves opening up connections to hydraulic parts requires a high degree of cleanness 1 2 3 4 NOTE Clean the outside of the cylinder Clamp the cylinder in a vice Remove the cylinder nut and empty the remaining oil from the cylinder Pull out the piston rod along with its seals The piston is fixed with Loctite If necessary heat gently to facilitate removal 5 Remove the piston from the piston rod 6 Remove the cylinder nut from the piston rod 1 Check the piston rod piston and cylinder for damage or scratches 2 Replace all seals Ce Ca 0 Ca c Fig 5 Tilt cylinder assembly diagram Page 10 engcon Service Manual Tiltrotator Rotator EC10 30 Attachment Tilt cylinder Lubricate the seals in the cylinder nut with clean hydraulic oil and thread it onto the piston rod Apply lock solution to the piston and mount it on the piston rod Make a punch mark on the bottom between the piston and the piston rod to secure the piston Lubricate the new seals on the piston with clean hydraulic oil and push the pis
10. cator engcon Page 23 Service Manual Tiltrotator Rotator EC10 30 Worm screw NOTE While checking the play make sure that the lower part and frame do not rotate in relation to each other 6 Turn the lower part clockwise Check that the play is within the specifi ed tolerance If there is too much play the worm screw must be reshimmed 7 Remove the indicator with a suitable tool and install the grease nipple in the screw housing 8 Attach the motor according to the instructions in the section Hydraulic motor Attachment Page 24 engcon Service Manual Tiltrotator Rotator EC10 30 Worm wheel Removal Worm wheel CAUTION Make sure that the hydraulic system is free of pressure before starting work Risk of personal injury All work that involves opening up connections to hydraulic parts requires a high degree of cleanness 1 Perform steps 1 5 according to the instructions in the section Head Removal Remove the cover over the directional valves Mark the positions of the power plugs on the directional valves Remove the power plugs Remove the directional valves 2 3 4 5 Plug all open connections 6 Disconnect the unit cable on the unit box 7 Remove the unit box 8 Remove the motor guard 9 Mark the positions of the hydraulic tubes on the motor 10 Remove the hydraulic tubes 11 Plug all open connections 12 Undo the two screws on the motor and remove the motor
11. ck screw Fig 10 Grab cylinder 5 Connect the hydraulic tubes following the markings made earlier 6 Lubricate the tiltrotator See the lubrication schedule in the instruction manual engcon Page 15 Service Manual Tiltrotator Rotator EC10 30 Directional valve Directional valve Removal CAUTION Make sure that the hydraulic system is free of pressure before starting work Risk of personal injury All work that involves opening up connections to hydraulic parts requires a high degree of cleanness 1 Remove the cover over the directional valves 2 Mark the positions of the power plugs 3 Disconnect the power plugs on the directional valves OB al GB ogee re O8 e8eli Fig 11 Marking power plugs variations may occur o o ee udi LI Brig o o 4 Remove the directional valves 5 Plug all open connections 6 Remove the plastic nut on the electromagnet and pull it off the directional valve NOTE Reserve the O rings for later Page 16 engcon Service Manual Tiltrotator Rotator EC10 30 Directional valve Fig 12 Directional valve 7 Replace any damaged parts Attachment 1 Attach the electromagnets on the directional valve 2 Lubricate the O ring thread it onto the directional valve and attach the plastic nut Fig 13 Directional valve 3 Attach the directional valve on the valve block Check t
12. e play after attachment and shimming Page 18 engcon Service Manual Tiltrotator Rotator EC10 30 Head Fig 14 Shimming head 5 Attach the lock screw for the tilt shafts 6 Perform steps 1 5 according to the instructions in the section Tilt cylinder Attachment engcon Page 19 Service Manual Tiltrotator Rotator EC10 30 Hydraulic motor Hydraulic motor Removal CAUTION Make sure that the hydraulic system is free of pressure before starting work Risk of personal injury All work that involves opening up connections to hydraulic parts requires a high degree of cleanness NOTE Dismantling instructions for each type of hydraulic motor are included with the seal kit when spare parts are ordered Remove the motor guard Mark the hydraulic tubes connected to the motor Remove the hydraulic tubes Plug all open connections a A O N Undo the screws on the motor and remove the motor Attachment 1 Attach the motor in the frame and tighten the screws 2 Attach the hydraulic tubes to the motor following the markings made earlier 3 Attach the motor guard Page 20 engcon Service Manual Tiltrotator Rotator EC10 30 Worm screw Removal Worm screw CAUTION Make sure that the hydraulic system is free of pressure before starting work Risk of personal injury All work that involves opening up connections to hydraulic parts requires a
13. e screws for the hitch centre ring and yoke couplings must be replaced during servicing The replacement screws should be of the same type as the previous screws Axialglapp snackskruv A Axialglapp sn ckhjul B EC10 Max 0 6 mm Max 0 4 mm EC15 Max 0 6 mm Max 0 4 mm EC20 Max 0 8 mm Max 0 4 mm EC30 Max 0 8 mm Max 0 4 mm NOTE After shimming the values should be between 0 1 mm and 0 2 mm A Axial play worm screw B Axial play worm wheel Fig 2 Overview play engcon Page 7 Service Manual Tiltrotator Rotator EC10 30 Tiltrotator Rotator EC10 30 Tiltrotator Rotator EC10 30 Hydraulic motor Worm screw Worm wheel Reverse dismantling and assembly is performed in the same way as normal dismantling and assembly except that the plug in the frame is used to detach the hitch Fig 3 Assembly diagram rotator EC10 30 Page 8 engcon Service Manual Tiltrotator Rotator EC10 30 Tilt cylinder Tilt cylinder Removal CAUTION Make sure that the hydraulic system is free of pressure before starting work Risk of personal injury All work that involves opening up connections to hydraulic parts requires a high degree of cleanness Clean the tilt cylinder and its hydraulic connections Mark the positions of the two hydraulic tubes Disconnect the hydraulic tubes connected to the tilt cylinder WON Plug all open connections CAUTION Risk of
14. e section Head Attachment Page 32 engcon Service Manual Tiltrotator Rotator EC10 30 Shimming Worm wheel CAUTION Make sure that the hydraulic system is free of pressure before starting work Risk of personal injury All work that involves opening up connections to hydraulic parts requires a high degree of cleanness 1 Perform steps 1 5 according to the instructions in the section Worm screw Removal 2 Remove the cover over the directional valves Co Mark the positions of the power plugs on the directional valves then disconnect them Remove the directional valves Plug all open connections Remove the valve package by disconnecting the swivel Plug all open connections Remove the plug s in the frame o odo 0 A Undo the screws on the centre ring NOTE Take care not to damage the swivel 10 Lift off the frame 11 Remove the shim 12 Check all wear parts for damage and wear Replace any damaged or worn parts Replace any damaged seals 13 Attach the shim Check that the lubrication hole in the frame is aligned with the hole in the shim Fig 29 Lubrication hole frame ANM Take care not to damage the swivel engcon Page 33 Service Manual Tiltrotator Rotator EC10 30 Worm wheel 14 Replace the frame 15 Install the screws on the centre ring and gradually tighten them alternating between them 16 Connect the swivel with the
15. e technical data Reshim if necessary 18 Check att all fl at wedges are correctly in place 19 Lubricate the O ring 20 Attach the hitch The couplings for extra equipment should be turned away from the machine 21 Attach the screws on the hitch and gradually tighten the screws alternating between them 22 Attach the connector block for the swivel The number 1 on the swivel should be turned towards the machine engcon Page 31 Service Manual Tiltrotator Rotator EC10 30 Worm wheel Fig 27 Marking swivel 23 Attach the tubes for the extra couplings 24 Attach the lock cylinder with latch bolts 25 Connect the tubes to the lock cylinder following the markings made earlier 26 Attach the hitch for the lock cylinders 27 Attach the guide pins on the locking wedges 28 Attach the tool springs using a suitable tool to guide them into place 29 Attach the indicator rod 30 Attach the motor 31 Attach the tubes to the motor following the markings made earlier 32 Attach the motor guard 33 Attach the unit box 34 Connect the unit cable to the unit box 35 Attach the directional valves The writing should be clearly legible from the machine 36 Connect the power plugs on the directional valves Og OR o Fig 28 Marking power plugs variations may occur 37 Put the cover into place over the directional valves 38 Perform steps 1 6 according to the instructions in th
16. hat all O rings are correctly in place 4 Connect the power plugs to the electromagnets following the markings made earlier 5 Make sure that the cables are positioned correctly and not rubbing against any sharp edges 6 Put the cover over the directional valves engcon Page 17 Service Manual Tiltrotator Rotator EC10 30 Head Head Removal CAUTION Make sure that the hydraulic system is free of pressure before starting work Risk of personal injury All work that involves opening up connections to hydraulic parts requires a high degree of cleanness 1 Perform steps 1 5 according to the instructions in the section Tilt cylinder Removal 2 Remove the tilt shafts using a hammer puller if necessary 3 Lift off the head Reserve the shims for later 4 Check the head and mountings for cracks and other damage Replace or repair if necessary 5 Knock out any worn bushes and replace them with new ones using a suitable tool Attachment 1 Lubricate the bushes for the tilt shafts 2 Lift the head into place and attach the tilt shaft that is turned away from the base machine 3 Attach the tilt shaft that is turned towards the machine and push it in until it reaches to the inner edge of the shaft hole in the head Do not use shims on the front end Risk of material damage 4 Shim the head into place with the shims on the inside at the rear end NOTE There must be no perceivabl
17. nstall the grease nipple in the screw housing for the worm screw engcon Page 39 engcon Nordic engcon Finland engcon Denmark engcon UK engcon Germany engcon Poland engcon The noble art of digging engcon Sweden Nordic Holding PO Box 111 SE 833 22 Str msund Sweden Phone 46 670 178 00 Fax 46 670 178 28 info engcon com www engcon com Z wy Production Syre Print Berndtssons Tryckeri 2010
18. rvice Manual Tiltrotator Rotator EC10 30 Worm wheel Attachment 1 Attach the wear washer Make sure the wear washer is turned so that it aligns with the lubrication holes in the frame Use lock solution Fig 19 Lubrication groove frame 2 Attach shims NOTE Some models have rod bolts Four rod bolts should be used for this type of worm wheel Fix them into place with lock solution and screw them into the worm wheel until they protrude roughly 52 mm EC10 or 57 mm EC15 above the worm wheel Fig 20 Rod bolts worm wheel 3 Lubricate the wear washer and attach the worm wheel If the worm wheel has rod bolts make sure they are in the quarter to three position engcon Page 27 Service Manual Tiltrotator Rotator EC10 30 Worm wheel Fig 21 Positioning rod bolts 4 Attach the O ring does not apply to ec15 and the centre ring and tighten them gradually alternating between them Insert the lubrication screw into the screw hole as marked 5 Remove the plug from the frame 6 Install the dial indicator and the tool into the plug hole Set the dial indicator to zero Fig 22 Dial indicator Page 28 engcon Service Manual Tiltrotator Rotator EC10 30 Worm wheel 7 Insert a screw into the worm wheel to keep the iron bar in place 8 Measure the axial play around the worm wheel by pushing the bar against the screw Check the maximum permitted play in the technical dat
19. se assembly Page 36 engcon Service Manual Tiltrotator Rotator EC10 30 Checking of axial play Checking of axial play Axial play worm wheel CAUTION Make sure that the hydraulic system is free of pressure before starting work Risk of personal injury All work that involves opening up connections to hydraulic parts requires a high degree of cleanness EC10 1 Remove the cover over the directional valves 2 Remove the screw holding the unit box in place 3 Remove the plug in the frame and check that none of the screw holes in the worm wheel are directly in front of the plug hole Never allow to rotate with a tool attached engcon Page 37 Service Manual Tiltrotator Rotator EC10 30 Checking of axial play 4 Attach the gauge for checking the axial play Fig 33 Gauge for checking play 5 Set the gauge to zero resting it against one of the fl at surfaces with the rotator resting fl at against the supporting surface 6 Check the play by lifting the rotator up from the supporting surface Probe with an iron bar between the hitch and frame to make sure that there is room for maximum play Check that the play is within the indicated toler ance If there is too much play the rotator must be reshimmed 7 Reshim according to the instructions in the section Worm wheel Shimming 8 Remove the gauge and attach the plug to the frame 9 Attach the screw holding the unit box in place
20. t width mm 1400 1600 1700 2200 Max hydraulic pressure MPa 22 5 22 5 22 5 22 5 Min max hydraulic fl ow l min 30 60 40 70 50 80 50 100 Max rec pressure in return line MPa 02 05 02 05 2 5 02 05 Weight kg 210 840 485 780 Width A mm 320 320 450 500 Width B mm 245 245 300 390 Width C mm 290 307 310 390 Total length D mm 540 698 890 970 Build height E mm 390 420 440 520 Max width mm 640 680 720 920 Swivel channel extra function number of couplings 2 4 2 4 2 4 2 4 Swivel channel lock function number of couplings 2 2 2 2 Rotation Infinite Infinite Infinite Infinite Tilt angle 2x40 2x40 2x40 2x40 Tilt time hydraulic flow s l min 5 19 5 21 5 48 5 75 Rotation time for one rotation hydraulic flow s l min 7 50 7 61 7 70 7 64 Hydraulic motor Char Lynn T line cm3 131 131 157 157 Standard mountings S40 Depends on coupling 4 From machine M Fig 1 Measurement table Page 6 engcon Service Manual Tiltrotator Rotator EC10 30 Tightening Permitted play Technical data The rotator is dimensioned to withstand heavy strain from breakout and rota tion Tightening of certain screw joints is vital to ensure optimum durability Screws and thread holes must be kept very clean and the threads well lubri cated Screw dimension 8 8 Type 12 9 Type M5 5 7 Nm 9 7 Nm M10 47 Nm 80 Nm M12 81 Nm 140 Nm M16 197 Nm 333 Nm M20 385 Nm 649 Nm Th
21. ton rod into the cylinder Screw the oylinder nut into place Attach the tilt cylinder to the yoke coupling that is turned towards the machine Screw the yoke coupling that is turned away from the machine into place Fig 6 Tilt cylinder Attach the cylinder shaft and the lock screw Connect the hydraulic tubes to the tilt cylinder following the markings made earlier Lubricate the tiltrotator See the lubrication schedule in the instruction manual engcon Page 11 Service Manual Tiltrotator Rotator EC10 30 Grab cylinder Grab cylinder Removal CAUTION Make sure that the hydraulic system is free of pressure before starting work Risk of personal injury All work that involves opening up connections to hydraulic parts requires a high degree of cleanness Clean the grab cylinder and its hydraulic connections Mark the positions of the two hydraulic tubes Remove the hydraulic tubes Plug all open connections Remove the lock screw for the grab cylinder s shaft Oak WN Remove the shaft and the grab cylinder with spacers Fig 7 Grab cylinder 7 Remove the nut on the rear coupling 8 Remove the cylinder 9 Remove the grab guard Page 12 engcon Service Manual Tiltrotator Rotator EC10 30 Dismantling Grab cylinder All work that involves opening up connections to hydraulic parts requires a high degree of cleanness 1 Clean the outside
22. valve package for the frame 17 Check that none of the screw holes in the worm wheel are directly in front of the plug hole Never allow to rotate with a tool attached 18 Install the dial indicator and the tool in the hole for the plug Set the indicator to zero with the rotator resting on the supporting surface Fig 30 Dial Indicator 19 Check the play by lifting the rotator up from the supporting surface Probe with an iron bar between the hitch and frame to make sure that there is room for the maximum play Check that the play is within the indicated tolerance 20 Attach the plug s in the frame 21 Attach the directional valves Page 34 engcon Service Manual Tiltrotator Rotator EC10 30 Worm wheel 22 Connect the power plugs on the directional valves following the markings made earlier OB i GB o Fig 31 Marking power plugs variations may occur 23 Put the cover into place over the directional valves 24 Perform steps 1 3 and 9 according to the instructions in the section Worm screw Attachment engcon Page 35 Service Manual Tiltrotator Rotator EC10 30 Reverse assembly Reverse assembly Reverse dismantling and assembly is performed in the same way as normal dismantling and assembly except that the plug s in the frame is are used to disconnect the hitch Tilt cylinder Valve block swivel Hydraulic motor Fig 32 Assembly diagram rever
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