Table 2-1. Unit Preventive Maintenance Checks and Services (Continued)
Item to Check/
Lubricate boom pivot pins (2 places) with GAA as required.
Check boom chain tension. With the boom fully extended in a
horizontal position, measure the retract chain sag at the middle of the
intermediate boom section. Chain sag should be approximately 3-1/4
to 3-1/2 inches from the top of the chain to the bottom of the boom.
Refer to Para 18-23 if chain requires adjustment.
Boom Electrical Cable
Check cable and hose adjustment. Refer to Para 18-24 for adjustment
and Hydraulic Hoses