Manual

162
Model 10054 Rev 3/02
General Maintenance
C. Inner Boom Chain Tension Check
Check the inner boom chain tension by measuring the inner 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. Lower both outriggers completely. Fully extend the boom, then
retract it 2" (51 mm). Turn the vehicle OFF.
3. Measure the sag in the inner boom extend chain between the bot-
tom of the chain and the top of the secondary intermediate boom at
the closest point (Figure 114). Acceptable inner boom chain sag is
between 1.5" (38 mm) and 2.5" (64 mm). If the measurement is not
within the dimensions listed above, the boom chain needs to be
adjusted.
Figure 114
OH2390
50
OH2670
1000
OH2690
OA0491
Inner Boom Chain
Sag
Center Section Of
Secondary
Intermediate Boom
162
Model 10054 Rev 3/02
General Maintenance
C. Inner Boom Chain Tension Check
Check the inner boom chain tension by measuring the inner 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. Lower both outriggers completely. Fully extend the boom, then
retract it 2" (51 mm). Turn the vehicle OFF.
3. Measure the sag in the inner boom extend chain between the bot-
tom of the chain and the top of the secondary intermediate boom at
the closest point (Figure 114). Acceptable inner boom chain sag is
between 1.5" (38 mm) and 2.5" (64 mm). If the measurement is not
within the dimensions listed above, the boom chain needs to be
adjusted.
Figure 114
OH2390
50
OH2670
1000
OH2690
OA0491
Inner Boom Chain
Sag
Center Section Of
Secondary
Intermediate Boom