Page 489 - RYCO Hydraulics Technical Manual 2019
P. 489

     ASSEMBLY INSTRUCTIONS – TUBE BITE HOSE COUPLINGS (END STYLE 850)
 ASSEMBLY INSTRUCTIONS FOR:
TUBE BITE HOSE COUPLINGS (END STYLE 850) CONT.
If safe to do so, the bent tube part can be cut from the old assembly and reused. (NOTE: for combined hose and tubing assemblies with Metric Tubing, Male DKL or DKS Hose Coupling can be used with M6L or M6S Metric Nut and Cutting Ring).
   STEP SEVEN
  RAISED SHOULDER
        0.25MM (.010”) MAX.TUBE COLLAPSE
    • Disassemble the Nut from the Coupling.
• Inspect the front edge of the Compression Olive. For correct assembly, the
cutting edge of the Compression Olive must have formed a shoulder on the tube at least 50% as high as the cutting edge, all the way around the tube3.
  STEP EIGHT
                               • Attach the T2850, T4850 or 6850 coupling onto the hose, without the tube, Nut and Compression Olive connected to it.
• Refer to the appropriate Assembly Instructions for the Hose Series and Coupling Series being assembled.
• Do not assemble the coupling onto the hose until Steps One to Seven are completed.
    STEP NINE
  2. TURN A FURTHER
1/6 TO 1/3 OF A TURN FROM PINCH-TIGHT
1. ORIENTATE TUBE
                                                   • Re-assemble the tube, Nut and Compression Olive onto the T2850, T4850 or 6850 end of the hose assembly.
• Nut will turn easily until an increase in force is required. At this point, orient the bent tube assembly pointing to the correct direction if required.
• Holding the Hex of the T285, T485 or 685 coupling insert with one spanner, with another spanner tighten the Nut down a further 1/6 of a turn as a minimum, but no more than 1/3 of a turn, to complete tightening operation.
  NOTES
   1 This is a general rule, and may vary slightly with different tubing materials.
2 In some instances (especially when using soft or thin-walled tube), to
prevent excessive tube collapse, it may be necessary to support the inside
of the tube with a mandrel prior to setting the Compression Olive.
3 Note that the maximum allowable radial collapse of the inner tube
diameter is 0,25 mm (.010”).
   CONNECTING PARTNERSHIPS 487
TECHNICAL ADAPTORS COUPLINGS HOSE INTRODUCTION





































































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