TM-9-2350-238-34-2
CRANE (CAB) COMPONENTS, RECOVERY VEHICLE, FULL TRACKED: LIGHT, ARMORED, M578
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
APRIL 1992
TM-9-2350-238-34-2 - Page 29 of 327
TM 9-2350-238-34-2
Section Ill.
MAINTENANCE OF HYDRAULIC LINES AND FITTINGS
2-5. 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 exploded
views 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 is
relieved before performing any disassembly of hydraulic lines and fittings.
b. Inspect all unions, nipples, tees, reducers, plugs, elbows, and parts, on which end fittings
are used, for thread damage, fractures, corrosion, distortion, slivers, restrictions, sealing surface
scratches, 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 by
replacement of authorized parts (TM 9-2350-238-24P-2) which do not meet inspection criteria.
2-6. TUBE ELBOW TO TUBE FITTING.
DISASSEMBLY
Remove tube fitting locknut (1), sleeve spacer
(2), tube elbow (3), tube fitting locknut (4),
flat washer (5), and preformed packing (6).
REASSEMBL Y
Install new preformed packing (6), flat washer
(5), new tube fitting locknut (4), tube elbow
(3), sleeve spacer (2), and new tube fitting
locknut (1).
2-7. TUBE TEE TO TUBE FITTING.
DISASSEMBLY
Remove tube fitting locknut (1), flat washer
(2), and preformed packing (3). Disconnect
tube assemblies from tube tee (4) and remove
tube tee.
REASSEMBLY
Install tube tee (4), new
(3), flat washer (2), and
locknut ( 1).
preformed packing
new tube fitting
2-16
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