Sinoboom AB14EJ - Page 39

MAINTENANCE INSTRUCTIONS
GTZZ14EJ&16EJ Maintenance Manual 27
© May 2023
Table 4-2 Inspection and Preventative Maintenance Schedule (Continued)
Items
Intervals
Before each
delivery
1
or quarterly
2
Semiannually
3
Annually
4
Turntable assembly
Turntable
2 2 2
Slewing bearing or slewing reducer
1
50
, 2, 6, 12 1
50
, 2, 6, 12 1
50
, 2, 6, 8, 12
Slewing reducer (if equipped)
1, 2, 6 1, 2, 6 1, 2, 6, 11
Central rotary joint
6 6 6
Slewing motor
1, 6 1, 6 1, 6
Turntable pin(if equipped)
1, 2, 3 1, 2, 3 1, 2, 3
Turntable cover assembly
1, 2, 3 1, 2, 3 1, 2, 3
Boom assembly
Boom weldment
1, 2 1, 2 1, 2
Hose or wire rope bracket
1, 2 1, 2 1, 2
Pulley and slider assembly
1, 2 1, 2 1, 2
Bearing
1, 2, 5, 12 1, 2, 5, 12 1, 2, 5, 12
Cover or protective guard (if
equipped)
1, 2 1, 2 1, 2
Drag chain or wire rope system (if
equipped)
1, 2, 3, 5 1, 2, 3, 5 1, 2, 3, 5
Pivot pin and retaining ring
1, 2 1, 2 1, 2
Platform assembly
Guardrail 2 2 2
Access gate
1, 2, 3 1, 2, 3 1, 2, 3
Floor 2 2 2
Swing cylinder
1, 2, 5, 6 1, 2, 5, 6 1, 2, 5, 6
Safety belt anchorage point
1, 2, 7 1, 2, 7 1, 2, 7
Hydraulic system
Hydraulic pump
1, 2, 6 1, 2, 6 1, 2, 6
Hydraulic cylinder
1, 2, 5, 6 1, 2, 5, 6 1, 2, 5, 6
Oscillating cylinder exhausting(if
equipped)
10
NO.1
10
NO.1
10
NO.1
Hydraulic valve
1, 2, 5, 6 1, 2, 5, 6 1, 2, 5, 6
Counterbalance valve locking check
(if equipped)
10
NO.1
10
NO.1
10
NO.1
Hydraulic connecting pin and
retaining ring
1, 2 1, 2 1, 2
Hydraulic hose, pipeline and joint
1, 2, 6 1, 2, 6 1, 2, 6