Metallic Hose Assemblies - Thorburn Flex Inc

Teflon Lined HoseHose Fitting Material CodesBA - Nipple and insert brass: all other partssteel.BS - Nipple and insert brass: socket steel.BS - All parts steel except brass insert.Typical Bus Applications■ Compressor discharge■ Coolant transfer■ Fuel and oil lines■ Power steering✎■■■Brake linesFreon 12 transferAir conditioning linesEngine lines1. Cut hose to required lengthafter wrapping area to be cut witha double layer of masking tape;this is to prevent braid flare andattendant assembly difficulties.Tape is to remain in place untilIMMEDIATELY before slidingsockets onto hose. CAUTION —use a sharp TFE Hose cut-offblade in a Stratoflex approvedHose Cut-off machine only. Trimloose wires and clean hose bore.Discard hose if inner tube hasbeen kinked or collapsed or isnot cut square within ±6°. Removetape and slide sockets ontohose. Put the nipple in a vise andpush the hose onto the nipple.Rotate hose to size the tube andflare the braid. Remove hose fromnipple.2. Push the insert onto the hosebetween the inner tube and the braid.Completely bottom the hose in the insertby pushing against a flat surface.3. Push the insert and hose onto thenipple until the insert bottoms againstthe nipple chamfer. Lubricate the nippleand socket threads. Push the socketforward and start the threads by hand.504. Tighten the nipple hex with theproper wrench until there is a 1/32"maximum gap beween the nippleand socket hexes. To disassemble.reverse the procedure.*5. Clean the hose assembly usingvarsol or other Thorburn approvedfluid. Blow the hose bore dry usingfiltered air.6. Proof test the hose assembly attwice the recommended operatingpressure for 30 seconds minimum,5 minutes maximum.*NOTE: During attachment of the fittingonto the hose, the insert collapses inwardlycompressing the TFE inner tube.All components other than the insert areconsidered reattachable unless visiblydamaged.