Enerpac HydraMax Series Instruction Sheet
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Enerpac HydraMax Series Instruction Sheet

Hydraulic tensioners
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Instruction Sheet
HydraMax ® Series Hydraulic Tensioners
L4371 Rev. B 10/19

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Summary of Contents for Enerpac HydraMax Series

  • Page 1 Instruction Sheet HydraMax ® Series Hydraulic Tensioners L4371 Rev. B 10/19...
  • Page 2 Weitere Sprachen finden Sie unter www.enerpac.com. Para otros idiomas visite www.enerpac.com. Muunkieliset versiot ovat osoitteessa www.enerpac.com. Pour toutes les autres langues, rendez-vous sur www.enerpac.com. Per altre lingue visitate il sito www.enerpac.com. Ga voor de overige talen naar www.enerpac.com. For alle andre språk henviser vi til www.enerpac.com.

  • Page 3: Table Of Contents

    8.0 MAINTENANCE ..........14 9.0 STORAGE ............. 18 10.0 TROUBLESHOOTING ........ 19 11.0 TECHNICAL DATA ........21 1.0 INTRODUCTION Warranty • Enerpac guarantees the product only for the Overview ® purpose for which it is intended. The aim of the HydraMax Bolt Tensioning System is to quickly and accurately apply a •...

  • Page 4: Safety

    •HM13 •HM14 •HM15 hazard seriousness. The Signal Words used These tools conform with the in this manual are WARNING, CAUTION, and requirements for CE. NOTICE. Enerpac declares that this product has been DANGER Indicates hazardous tested and conforms to applicable standards situation...
  • Page 5 Non-Enerpac parts may break or cause the product to malfunction. • Never set a relief valve to a higher pressure • Use hydraulic tensioners only in a coupled than the maximum rated pressure of the pump and tensioner.

  • Page 6: Specifications

    9 - Snap Ring 10 - Socket 11 - Tommy Bar FIGURE 3, MAXIMUM STROKE INDICATOR Note: The tensioner “load cell” includes items 2, 3, 4 and 5 (assembled). FIGURE 2, TENSIONER MAJOR COMPONENTS © 2019 Enerpac, All Rights Reserved.

  • Page 7: Setting Up

    (US) centimeters using hydraulic oil Enerpac HF oil ISO32. 11.4 0.38 Enerpac HF oil is available at your local Enerpac 21.0 0.71 Distributor or Authorized Service Centre. 28.4 0.96 Hydraulic connection is made using quick 37.3...
  • Page 8 See Figure 5, View A. Ensure that the tommy bar slot in the bridge faces outward. Ensure that the hydraulic couplers are positioned outward, to allow easier connection of hydraulic hoses. © 2019 Enerpac, All Rights Reserved.
  • Page 9 PRESSURE PRESSURE RELEASE RELEASE OPEN OPEN FIGURE 5, HYDRAULIC TENSIONER INSTALLATION © 2019 Enerpac, All Rights Reserved.
  • Page 10 (50% coverage). If 12 tensioners are 100% and 50% tensioner coverage are shown available, then every third stud will contain a in Figure 6. Contact Enerpac for additional tensioner (33% coverage). information regarding tensioner arrangements of less than 50% coverage.

  • Page 11: Tensioning And De-Tensioning

    Operate the pump and pressurize the NO Threads tensioners up to approximately 1000 psi FIGURE 9, SOCKET AND NUT FIRM [70 bar]. Check for oil leaks. AGAINST JOINT © 2019 Enerpac, All Rights Reserved.
  • Page 12 Also refer to surface at each tensioner. See Figure 7. safety information contained in sections 2.1. Ensure that the joint is correctly aligned. © 2019 Enerpac, All Rights Reserved.
  • Page 13 Apply Pressure “B” (At all studs marked “1”) (At two diametrically opposite studs marked “1”) FIGURE 14, RECHECKING FIRST PASS FIGURE 12, TENSIONER ARRANGEMENT, TENSION (50% TENSIONER COVERAGE) FIRST PASS - TYPICAL (50% TENSIONER COVERAGE) © 2019 Enerpac, All Rights Reserved.
  • Page 14 See figures 8 and 9. 20. Repeat step 19 for the remaining “second pass” tensioners in the circuit. Pressure B1 = Break Loose FIGURE 16, DETERMINING THRE “BREAK LOOSE” PRESSURE © 2019 Enerpac, All Rights Reserved.
  • Page 15 This is the pressure at which a nut on one of the tensioners just begins to loosen and can be turned by hand with the tommy bar. Record this pressure for reference. See Figure 16. © 2019 Enerpac, All Rights Reserved.

  • Page 16: Maintenance

    Turn down the threaded pullers until the It is recommended that repairs and servicing pistons are fully retracted. Disconnect be carried out by Enerpac at intervals agreed hydraulic hoses and install a dust cap (not by Enerpac and customer. All parts will be shown) over each disconnected coupler.
  • Page 17 If tensioners are subject to a lot of use it is event of seal failure the tensioners are returned advisable to fully strip them and clean and to Enerpac for seal replacement, however if this inspect all components, at least once a year. is not possible then the enclosed procedure Refer to Section 8.3.
  • Page 18 The seals should not be removed during routine maintenance. FIGURE 19 - REMOVAL OF SEALS Discard the seal, remove the extraction bolts and replace the two plastic grub screws. © 2019 Enerpac, All Rights Reserved.
  • Page 19 The 1/4” BSP adaptor must never be installed into the tensioner body before the coupler and seals are attached. Follow the procedure below if the adaptor has separated from the coupler. FIGURE 21A - INCORRECT AER ASSEMBLY © 2019 Enerpac, All Rights Reserved.

  • Page 20: Storage

    Do not lubricate the 1/8” BSP thread on the adaptor it is important that the adaptor is installed dry to prevent overloading the threads: thread sealant should not be used. © 2019 Enerpac, All Rights Reserved.

  • Page 21: Troubleshooting

    2. Replace hose 2. Leaking/burst hose 3. Replace coupler/seals 3. Leaking coupler/seals 4. Replace seals 4. Leaking tensioner seals 5. Check pump for oil 5. Defective pump unit delivery © 2019 Enerpac, All Rights Reserved.
  • Page 22 Hydraulic fluid visible at top/ 1. Maximum stroke achieved 1. Tighten nut and repeat bottom of tensioner Oil is leak- – Relief valve activated procedure ing from the tensioner body. 2. Leaking tensioner seals 2. Replace seals © 2019 Enerpac, All Rights Reserved.

  • Page 23: Technical Data

    11.0 TECHNICAL DATA 11.1 HydraMax ® Tensioner Specifications Nearest obstruction FIGURE 22A X = minimum socket rotation 60⁰ FIGURE 22B © 2019 Enerpac, All Rights Reserved.
  • Page 24 ® 11.2 HydraMax Tensioner Specifications Metric Table (see Fig 22 for locations of dimensions A, B, C, D, E, F, and N) © 2019 Enerpac, All Rights Reserved.
  • Page 25 © 2019 Enerpac, All Rights Reserved.
  • Page 26 © 2019 Enerpac, All Rights Reserved.
  • Page 27 © 2019 Enerpac, All Rights Reserved.
  • Page 28 © 2019 Enerpac, All Rights Reserved.
  • Page 29 © 2019 Enerpac, All Rights Reserved.
  • Page 30 11.3 HydraMax ® Tensioner Specifications Imperial Table (see Fig 22 for locations of dimensions A, B, C, D, E, F, and N) © 2019 Enerpac, All Rights Reserved.
  • Page 31 © 2019 Enerpac, All Rights Reserved.
  • Page 32 © 2019 Enerpac, All Rights Reserved.
  • Page 33 © 2019 Enerpac, All Rights Reserved.
  • Page 34 © 2019 Enerpac, All Rights Reserved.
  • Page 35 © 2019 Enerpac, All Rights Reserved.
  • Page 36 NOTES _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ © 2019 Enerpac, All Rights Reserved.
  • Page 37 NOTES _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ © 2019 Enerpac, All Rights Reserved.
  • Page 38 http://www.enerpac.com...

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