TRANSMISSION AR 6Y1696 - Caterpillar

340690U1-up91U1-up*Direct injection only.The 5N7710 Fuel Injection Lines Group and the 5N7741 Fuel Lines Drain Group, are available for installation on engines with the above Serial Numbers if they are not equipped with an 8H7204 Primary Fuel Filter. (The mounting bracket for the switch in the drain lines group, must fasten to the same 6N751 Bracket that is normally used for installation of a primary fuel filter group.)The fuel injection lines in the 5N7710 Fuel Injection Lines Group have a double wall (a tube within a tube) with a space between the two tubes. If there is fuel leakage from an inner fuel line, the outer fuel line will direct the leakage to the reservoir of the 2N9768 Switch. The 2N9768 Switch is part of 5N7741 Fuel Lines Drain Group. Any alarm or signal that is to be used with this switch must be purchased separately. The alarm or signal for fuel leakage and the 2N9768 Switch must both be connected into the alarm system for the ship, building, etc. Be sure to check the liquid level adjustment at which the 2N9768 Switch will activate to send a signal.Installation Of 5N7710 Fuel Injection Lines Group
(1) Remove the fuel injection lines from each fuel injection pump to the fuel nozzles. Remove the through-the-head adapter for each set of fuel lines. (2) Put an 8M4437 Seal on each 5N7730 Adapter (1). Install a new 5N7730 Adapter (1) in each bore where the former adapters were removed. Use a 9L9814 Nut (2) on each stud to fasten the adapters in position on cylinder head (3).(3) Install all of the 5N7717 Fuel Lines (4). Use a 5P9795 Seal between each line (4) nut and adapter (1), then use a 5P2060 Seal (5) at the other end of each line (4) nut and the nozzle. (4) Use a 5P9267 Seal between each nut (6) and its injection pump, and use a 5P9795 Seal between each nut (7) and adapter (1), and install the new fuel lines. Fuel lines are as follows: 5N7711 (8), 5N7712 (9), 5N7713 (10), 5N7714 (11), 5N7715 (12) and 5N7716 (13). Tighten all fuel line nuts to 40 7 N m (30 5 lb.ft.).(5) Use 8F1179 Clip (14) with the bolt and washer from the former fuel line clamp, to fasten fuel line (13) to the cylinder head.(6) Use the parts that follow to make a fuel line damper (shock cushion) for fuel lines (9) and (10) [section (A-A)]: 5N7732 Damper (15), 7B1597 Clip (16), 1D4538 Bolt (17), 5N4213 Spacer (18), 4N1278 Strip (19), 9S2299 Strip (20) and 1B5354 Nut (21) with a 9M1974 Washer. Use an S1617 Bolt (22) with a 9M1974 Washer to fasten strip (19) to the cylinder head.(7) At locations (A) and (B), use the parts that follow, to make a fuel line damper for fuel lines (8), (11) and (12); 4N1278 Strip, 9M1974 Washer, 9S2299 Strip, 1A9579 Bolt with 1B5354 Nut and two 5N7732 Dampers. Use an S1617 Bolt with a 9M1974 Washer to