SECTION 5 – GENERAL SPECIFICATIONS AND MAINTENANCE
5-44
– JLG Lift–
5.14 SLACK CHAIN SENSORS CHECK
Interval - Check after every 6 months of operation.
Figure 5-27. Slack/Broken Chain Sensors
Check the 2 (8E/20E) or 3 (10E/26E) slack chain sensors to
ensure proper operation.
Location:
-8E/20E:
one at the top of mast #1 and one at the bottom of mast #4.
-10E/26E: one at the top of mast #1, one at the top of mast #2
and one at the bottom of mast #5.
Wedge a block (P/N: ST2741) as illustrated opposite to activate
the slack chain sensor and keep it activated. The system is
functioning properly if:
1.
From the Platform Control Console:
• An acoustic alarm sounds.
• The red slack chain indicator lights up on the Platform
Control Panel.
• All functions are disabled except boom and mast raising
functions.
• Prohibited movements are indicated by the orange light
indicator on the platform control panel.
2.
From the Ground Control Console:
• An acoustic alarm sounds.
Repeat steps 1 to 2 for each slack chain sensor.
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