TM 9-2350-238-34-2Section Ill.MAINTENANCE OF HYDRAULIC LINES AND FITTINGS2-5. GENERAL.a.This section contains instructions on repair of hydraulic lines and fittings. Repair of hy-draulic lines and fittings consists of replacement of preformed packings, tube fitting locknuts,Iockwashers, and defective sleeve spacers and washers. Page 2-16 thru 2-17 show explodedviews of typical hydraulic lines and fittings used on the vehicle and give procedures for disas-sembly and reassembly of fittings. For complete inspection procedures, refer to b. and c. below.Refer to TM 9-2350-238-24P-2 for ordering of authorized parts. Ensure hydraulic pressure isrelieved before performing any disassembly of hydraulic lines and fittings.b. Inspect all unions, nipples, tees, reducers, plugs, elbows, and parts, on which end fittingsare used, for thread damage, fractures, corrosion, distortion, slivers, restrictions, sealing surfacescratches, or mutilation. Hex corners shall not be rounded.c.Inspect tube assemblies for kinks, fractures, cracks, thread damage, restrictions, corro-sion, or mutilation. Tube ends shall be squared, deburred inside and out, and unprimed or un-painted from sleeve flange to tube end. Tubes, 1/4 to 3/8 in. (6.35 to 9.53 mm) in diameter,shall show no deformation of sleeves as a result of overapplication of torque. Repair is byreplacement of authorized parts (TM 9-2350-238-24P-2) which do not meet inspection criteria.2-6. TUBE ELBOW TO TUBE FITTING.DISASSEMBLYRemove tube fitting locknut (1), sleeve spacer(2), tube elbow (3), tube fitting locknut (4),flat washer (5), and preformed packing (6).R E A S S E M B L YInstall new preformed packing (6), flat washer(5), new tube fitting locknut (4), tube elbow(3), sleeve spacer (2), and new tube fittinglocknut (1).2-7. TUBE TEE TO TUBE FITTING.DISASSEMBLYRemove tube fitting locknut (1), flat washer(2), and preformed packing (3). Disconnecttube assemblies from tube tee (4) and removetube tee.REASSEMBLYInstall tube tee (4), new(3), flat washer (2), andlocknut ( 1).preformed packingnew tube fitting2-16
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