SkyTrak 6036 Operation Manual - Manual (Page 87)

Page 81 6036/6036T
Figure 56
OA0491
BOOM CHAIN SAG
15. Boom Chains and Wear Pads
A. Top Boom Chain Tension Check (First 50 Hours
and 1000 Hour Intervals or Annually Thereafter)
Check the boom chain tension by measuring the top
boom chain sag.
1. Raise the boom to a horizontal (level) position.
Fully extend the boom, then retract it 2" (50,8
mm) (one inch per section).
2. Measure the sag in the top boom chains between
the bottom of the chains and the top of the
intermediate boom at their closest point (Figure
56). Acceptable boom chain sag is between
1-1/2" (38,1 mm) and 2-1/2" (63,5 mm). If the
measurement is less than 1-1/2" (38,1 mm) or
more than 2-1/2" (63,5 mm), the boom chains
need to be adjusted. Follow procedures in
paragraph 15B to adjust.
CENTER SECTION
OF INTERMEDIATE BOOM