Page 488 - 2019 RYCO Product Technical Manual V1-8
P. 488

 TECHNICAL
ASSEMBLY INSTRUCTIONS – TUBE BITE HOSE COUPLINGS (END STYLE 850)
ASSEMBLY INSTRUCTIONS FOR:
TUBE BITE HOSE COUPLINGS (END STYLE 850).
RYCO Hose Couplings Series with Tube Bite End Style 850 (T2850, T4850 and 6850 Series) provide a quick and convenient method of connecting Imperial Outside Diameter seamless steel hydraulic tubing, without the need to flare the tubing.
They allow quick and economical repairs to assemblies made of combined hose and Imperial-sized tubing. Often in these assemblies, the tubing is bent to a special shape or includes special mounting brackets, and is difficult or expensive
to replace.
STEP ONE
• Ensure that the wall thickness of the tubing is of the approved gauge. See S134 J-Lok & Tubing Selection Table page <?>.
• Cut the tube to required length. Ensure that the tube is cut squarely.
A tube cutter is preferred, however a hacksaw or abrasive drop saw may be used providing the cut is square and clean.
• Deburr inner and outer edges of tube.
STEP THREE
• Slide the Nut onto the tube, so that the threads of the Nut face towards the end of the tube to be assembled to the coupling, then slide the Compression Olive onto the tube.
• The end with the raised collar must be adjacent to the Nut, and the end with the long parallel section must face towards the end of the tube to be assembled to the coupling.
STEP FIVE
STEP TWO
• Remove dirt, grit and cutting debris from the inside and outside of the tube. • Remove the Nut and Compression Olive from the T2850, T4850 or
6850 coupling.
• Lubricate the threads of the Nut and the Male Thread of the T2850, T4850 or
6850 coupling with assembly oil or hydraulic oil.
• Lubricate internal and external surfaces of the Compression Olive with
assembly oil or hydraulic oil.
STEP FOUR
• Insert the tube end into the Male Threaded end of the T2850, T4850 or 6850 coupling, until it bottoms against the shoulder inside the Male Threaded end.
• Slide the Nut and Compression Olive along the tube until the Compression Olive seats inside the coupling body, and thread the Nut onto the Male Threaded end of the coupling.
• Tighten Nut until the Compression Olive just grips the tube. The intial gripping of the tube is complete when the tube can no longer be rotated by hand.
STEP SIX
• Holding the hex of the T2850, T4850 or 6850 coupling insert stationary with one spanner, with another spanner tighten the Nut down by one full turn, to compress the Olive onto the tube1.
• Use the marks from Step 5 as a reference. Ensure that the tube end is firmly butted against the shoulder inside the coupling, and that the tube does not rotate2.
486
RYCO QUALITY
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Place a mark on the Nut, and an adjacent mark on the Hex of the T2850, T4850 or 6850 coupling insert.

































































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