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ToosNHNNYHHNNNYAAHHRHNNYNHHHNYNHNA※4 Spring Nut Key (6TWH04) cannot be used for the accumulator manufactured before January, 1992. lToolsWrenchDisassembling/assembling NACOL's accumulators requires using special wrenches.Three types of special wrenches are available for different purposes.This wrench is used to disassemble/assemble the top cap.For information about how to use it, please refer to the instruction manual. Use the hoisting attachment supplied with the product to prevent the top cap from coming off.This wrench is used to disassemble/assemble the oil port valve assembly. For information about how to use it, please refer to the instruction manual.Spring Nut key is used for replacement of the Dynac Valve parts. For information about how to use it, please refer to the catalogue P.107 and instruction manual.Cap Wrench & Hoisting Attachment in PlaceEye NutTop Cap One Piece TypeEye NutCap WrenchTop Cap Two Pieces TypeCap Wrench98PictureItem NumberThe size differs depending on the item number.※1 For models not listed above, use a commercially available wrench. ※2 For stainless steel accumulators, use a commercially available wrench. PictureItem NumberThe size differs depending on the item number.※1 For models not listed above, use a commercially available wrench.※2 For super high flow type accumulators, use a commercially available wrench.※3 The shape of Ring Nut may differ depending on the manufacture date. Hexagonal Ring Nut cannot be used with Ring Nut Wrench listed above. When ordering the Ring Nut for the accumulator currently used, please confirm the shape of Ring Nut.PictureItem NumberSeries6TWH816TWH1006TWH63Accumulator Shell MaterialCarbon SteelStainless SteelCarbon SteelStainless SteelStainless SteelStainless SteelCarbon SteelStainless SteelStainless SteelStainless SteelCarbon SteelStainless SteelCarbon steelCarbon SteelCarbon SteelCarbon SteelStainless SteelStainless SteelCarbon SteelCarbon SteelCarbon Steel6TWD0756TWD0856TWD1056TWD1206TWD140Outer hexagon size of the spring nut before January, 1992 is 10 mm.6TWH04Acc. Gas Volume: L20 – 6020 – 6080, 120150, 160, 17560Y40, Y60, 80, 120 160 (Except for the 35 MPa type)20 – 6080, 12016060SeriesH (Only for the 35 MPa type)H (Except for the 35 MPa type)Top Cap TypeOne Piece TypeTwo Pieces TypeAccumulator Nominal Gas Volume: L5 – 165 – 165 – 165 – 1620 – 6320 – 6320 – 6080, 1206020 – 6020 – 60Y60, 80, 120Y40, Y60, 80, 12080, 12014560160160160150150, 160, 175Accumulator Shell Diameter: mm190.7, 216.3190.7190.7, 216.3190.7244.5244.5267.4, 298.5355.6355.6298.5267.4, 298.5355.6355.6355.6406.4355.6406.4406.4406.4406.4406.4Cap WrenchRing Nut WrenchSpring Nut Key