Maintenance 15
Quarterly Inspection Continued...
Frequency
Q
Q
Q
Q
Q
Q
Key
Hyd Lines
Pumps&Motors
Valves
Cylinders
Winch
Hyd Filter
Inspection Description
Hoses, fittings, & tubing for proper routing, leakage, blistering, deformation,
& excessive abrasion.
Pressure line(s) from pump to control valve
Return line(s) from control valve to reservoir
Suction line(s) from reservoir to pump
Pressure line(s) from control valve to each function
Load holding valve pipe(s) and hose(s)
Other
Pumps and motors for loose bolts/fasteners, leaks, noise, vibration, loss of
performance, heating and excess pressure.
Winch motor(s)
Rotation motor(s)
Other
Hydraulic valves for cracks, spool return to neutral, sticking spools, relief
valve failure.
Main control valve
Load holding valve(s)
Outrigger or auxiliary control valve(s)
Other
Hydraulic cylinders for drifting & leakage. Rods for nicks, scores, & dents.
Castor damage. Case & rod ends for damage & abnormal wear.
Outrigger cylinder(s)
Inner boom cylinder(s)
Outer boom cylinder(s)
Extension cylinder(s)
Rotation cylinder(s)
Jib lift cylinder(s)
Jib extension cylinder(s)
Other
Winch, sheaves, & drums for damage, abnormal wear, abrasion, & other
irregularities.
Hydraulic filters for replacement per maintenance schedule.
Status
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