TM 10-3930-675-20-20122 00-2PARKING BRAKE CONTROL VALVE REPLACEMENT - CONTINUED0122 00REMOVAL - CONTINUEDWARNING•DO NOT disconnect or remove any hydraulic system line or fitting unless hydraulic system pressurehas been relieved. Tighten all connections before applying pressure. Escaping hydraulic fluid underpressure can penetrate the skin, causing serious injury.•Search for leaks with a piece of cardboard. Protect hands and body from high-pressure fluids. If an acci-dent occurs, see a doctor immediately. Any fluid injected into the skin must be surgically removedwithin a few hours or gangrene may result.•At operating temperature, hydraulic oil is hot. Allow hydraulic oil to cool before disconnecting anyhydraulic lines. Failure to do so could result in injury.•Hydraulic fluid is very slippery. Immediately wipe up any spills. Failure to follow this warning mayresult in injury to personnel.CAUTIONWipe area clean around all hydraulic connections prior to disconnecting. Cap or plug all openings after dis-connecting. Contamination of hydraulic system could result in equipment failure.NOTETag hoses and connectors for installation.2.Disconnect three hydraulic hoses (9) and remove three fittings (8) from control valve (4).3.Disconnect two connectors (12) of wiring harness from switch (11).4.Remove switch (11) from control valve (4).5.Remove two locknuts (5), washers (6), screws (7), and control valve (4) from control valve bracket (1). Discard lock-nuts.6.If control valve bracket (1) is damaged, remove two locknuts (10) and control valve bracket from cab. Discard locknuts.45,6,7910111128
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