TM 9-2330-390-14&P4-113. HYDRAULIC SYSTEM BLEEDING (Ml022A1 WITH SIDE LIFT KIT) (Con’t).NOTEDuring extension, maintain slack In hoist sling as top beams are raised.14.At front and rear, operate hydraulic control valve to SIMULTANEOUSLY extend hydraulic lift cylinders (5) andhydraulic positioning cylinders (7). Throughout extension, maintain top and bottom beams (6 and 10) vertical.15.When full extension is reached, hold eachhydraulic control valve lever (20,21, and 22) in theextend position until pressure gage (19) reads2000 psi (13,790 kPa).NOTEIf fluid level In hydraulic reservoir Is sufficient,a cylinder piston seal leak should be lnvesti-gated.16.If 2000 psi (13,790 kPa) is not developed, checkhydraulic fluid level in reservoirs (see para-graph 3-7).NOTEDuring retraction, maintain slack In hoist sling as top beams are lowered.17.At front and rear, operate hydraulic control valve to SIMULTANEOUSLY retract hydraulic lift cylinders (5) andhydraulic positioning cylinders (7). Throughout retraction, maintain top and bottom beams (6 and 10) vertical.NOTEIf 2000 psi (13,790 kPa) Is not developed, a cylinder piston seal leak should beinvestigated.18.When full retraction is reached, hold each hydraulic control valve lever (20,21, and 22) in the retract positionuntil pressure gage (19) reads 2000 psi (13,790 kPa).19.At front and rear, shut down engine (see paragraph 2-20).20.Fill hydraulic reservoirs to top line on dipstick (see paragraph 3-7).21.At front and rear, start engine (see paragraph 2-20).22.Repeat steps 7 and 8 to alternately fully extend hydraulic lift cylinders (5) and hydraulic positioning cylinders(7).4-319
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