Chapter 5 General Reference 69
FREQUENCY ITEM KEY
INSPECTION DESCRIPTION
STATUS
(S,R,X,NA)
Q
81
Valves
Hydraulic valves for cracks, spool return to neutral, sticking
spools, proper relief valve setting, relief valve failure.
82
• Main control valve
83
• Load holding valve(s)
84
• Stabilizer or auxiliary control valve(s)
85
• Other
86
• Other
Q
87
Cylinders
Hydraulic cylinders for drifting, rod seal leakage and leakage at
welds. Rods for nicks, scores and dents. Case for damage.
Case and rod ends for damage and abnormal wear.
88
• Stabilizer cylinder(s)
89
• Inner boom cylinder(s)
90
• Outer boom cylinder(s)
91
• Extension cylinder(s)
92
• Rotation cylinder(s)
93
• Jib lift cylinder(s)
94
• Jib extension cylinder(s)
95
• Other
Q
96
Winch
Winch, sheaves and drums for damage, abnormal wear,
abrasions and other irregularities.
Q
97
Hyd Filters
Hydraulic filters for replacement per maintenance schedule.
A
98
Daily
All daily inspection items.
A
99
Monthly
All monthly inspection items.
A
100
Quarterly
All quarterly inspection items.
A
101
Hyd Sys
Hydraulic fluid change per maintenance schedule.
A
102
Controls
Control valve calibration for correct pressure & relief valve
settings.
A
103
Valves
Safety valve calibration for correct pressure & relief valve settings.
A
104
Valves
Valves for failure to maintain correct settings.
A
105
Rotation
Sys
Rotation drive system for proper backlash clearance & abnormal
wear, deformation and cracks.
A
106
Lubrication Gear oil change in rotation drive system per maintenance
schedule.
A
107
Hardware
Check tightness of all fasteners and bolts, using torque
specifications on component drawings or torque chart.
A
108
Wear Pads Wear pads for excessive wear.
A
109
Loadline
Loadline for proper attachment to drum.
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