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B TS–01619 1 2 Hex Flat Tightening Method 853, 853H Loader –9–13– Service Manual HYDRAULIC CONNECTION SPECIFICATIONS (CONT’D) The flare is the primary seal, the O–ring is the secondary If necessary, the O–ring–flare fitting can be used without an Use the following procedure to tighten the O–ring flare Tighten the nut until it contacts with the seat. Make a mark Use the chart below to find the correct tightness needed A P–13009 O–ring Flare Primary Secondary |