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Summary of Contents for NTN-SNR HMV EBF Series
- Page 1 MAINTENANCE INSTRUCTIONS Replacement of piston seals of hydraulic nuts HMV…EBF...
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Page 3: Table Of Contents
1. Replacement parts, accessories and technical data _______________________4 2. Required tools and accessories ___________5 3. Preparation for disassembly/assembly ______5 4. Dismounting the hydraulic nut _____________6 5. Dismounting the annular piston from the annular body ____________________7 6. Dismounting the O-rings _________________8 7. -
Page 4: Replacement Parts, Accessories And Technical Data
1. Replacement parts, accessories and technical data Article Notice TOOL HMV BALL PLUG 1/4 Sealing plug with ball * Consisting of: 1x quick-action coupling with cover TOOL HMV NIPPLE 1/4 Hydraulic connection * 1x adapter thread 1x sealing ring Sealing ring for hydraulic TOOL HMV SW 1/4 connection * TOOL HMV TBAR 11x150... -
Page 5: Required Tools And Accessories
2. Required tools and accessories Allen key For insertion of cap head bolts* (Compression spring guide bolts) HMV…EBF Allen key size 10-46 47-70 72-104 106-142 150-200 Allen key For tightening the threaded pins when disassembling the annular piston* (pre-installed in hydraulic nut as standard) HMV…EBF Allen key size 10-58... -
Page 6: Dismounting The Hydraulic Nut
4. Dismounting the hydraulic nut Lay the hydraulic nut flat on the working surface and make sure that the piston is fully inserted in the annular body (Non-pressurized). Clean the hydraulic nut so that it is free of oil, grease and dirt. Drain the oil. -
Page 7: Dismounting The Annular Piston From The Annular Body
Release the cap head screws using a suitable Allen key (table p.2). When you do this, you will hear a short “cracking” sound due to the thread lock on the bolts. Caution! Due to the compression springs, the cap head bolts are under tension. Remove the cap head bolts and compression springs from the annular body. -
Page 8: Dismounting The O-Rings
6. Dismounting the O-rings Remove the external and internal O-rings from the grooves either manually or using a flat object (e.g. blunt slot-head screwdriver or similar). When doing so, make sure that the hydraulic nut and, in particular, the sealing surfaces are not damaged. - Page 9 Remove the centering set screws. Degrease the take-up thread in the annular piston (dilution) and then blow out with compressed air. Insert compression springs. Apply thread lock to the compression bolts and screw in so that they are flush with the outside of the piston. Screw in the hydraulic connection and tighten to the specified tightening torque.
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Page 10: Drain The Hydraulic Nut
8. Drain the hydraulic nut Connect the hydraulic pump Tilt the nut Pump oil into the hydraulic nut until oil emerges without air bubbles at the ball pressure plug port. d) Screw in the ball pressure plug to the defined tightening torque of max. 45 Nm. 9. - Page 11 MORE INFORMATION CONCERNING OUR MAINTENANCE TOOLS OFFER IN OUR DOCUMENTATION CENTER : www.ntn-europe.com/documents Filter by : Industry OEM & Distribution > Tools...
- Page 12 This document is the exclusive property of NTN Europe. Any total or partial reproduction hereof without the prior consent of NTN Europe is strictly prohibited. Legal action may be brought against anyone breaching the terms of this paragraph. NTN Europe shall not be held liable for any errors or omissions that may have crept into this document despite the care taken in drafting it.
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