SkyTrak 6042 Operation Manual - Manual (Page 154)

152 Model 6042 Origin 5/02
General Maintenance
A. Boom Chain Tension Check
(First 50 Hours)
(1000 Hour Intervals)
Check the boom chain tension by measuring the top boom extend chain
sag.
1. Park the vehicle on level ground. Place the travel select lever in (N)
NEUTRAL, move neutral lock lever to NEUTRAL LOCK position,
engage the parking brake switch and raise the boom to a horizontal
(level) position.
2. Fully extend the boom, then retract it 2" (51 mm) (one inch per sec-
tion). Turn the vehicle OFF.
3. Measure the sag (Figure 101, 1) in the top boom extend chains (2)
between the bottom of the chains and the top of the intermediate
boom (3) at their closest point. Acceptable boom chain sag is
between 1.5" (38 mm) and 2.5" (64 mm). If the measurement is less
than 1.5" (38 mm), the boom chains need to be adjusted.
Figure 101
15. Boom Chains and Wear Pads
OH2390
50
OH2670
1000
OH2690
OA0491
1
2
3