Repeat step 3 for disassembly/removal of all preformed packings/shims between linear directional control valves
(11, 17, 18, and 19) and valve outlet (20). Remove and discard all preformed packings and shims.
Cleaning compound solvent is used to clean parts and is potentially dangerous to
personnel. Extinguish all smoking materials and do not allow sparks or open
flame near the work area. Use skin and eye protection and work in a well-
Clean all tubes, fittings, attaching hardware, linear directional control valves, valve inlet, and valve outlet sections
in degreaser tank with cleaning compound solvent.
Inspect linear directional control valves, valve inlet, and valve outlet for pitting, cracks, and wear. If defective,
replace valve sections as required.
Compressed air used for cleaning/drying can create airborne particles that can
injure the eyes. Always wear eye protection. Pressure must not exceed 30 psi
(207 kPa) or injury to personnel may result.
Inspect all valve ports and openings for foreign objects, dirt, and clogged passageways. Use compressed air to
clear clogged passageways.
Inspect all hydraulic tubes removed for kinks, pin hole leaks, pitted and split flares, and clogged passageways.
Use compressed air to clear clogged passageways. Replace any defective tubes.
Pour clean hydraulic fluid onto linear directional control valves, valve inlet, and valve outlet to flush out
Replace all parts found defective and replace all preformed packings and shims using respective repair kits.
Change 1 4-373