JLG 660SJ Operator Manual - Manual (Page 27)

SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
3121297 – JLG Lift – 2-7
b. Telescope boom out until 500 lb. (227 kg for ANSI
markets and 230 kg for CE and Australia markets)
light comes on (may need to used auxiliary power
to position boom correctly).
c. Mark wear pad location on the fly and mid booms.
d. Telescope boom out to full extension.
e. Measure from the mark on the fly boom to the wear
pad and measure from mark on the mid boom to
the wear pad.
f. Add These two numbers together (they should be
approximately equal) they should measure 137" to
139" (348 to 353 cm).
Boom Angle Switch.
a. Telescope boom to full extension.
b. Lift boom up until 1000 lb. (454 kg for ANSI markets
and 450 kg for CE and Australia markets) light
comes on.
c. Lift boom down using auxiliary power until 500 lb.
(227 kg for ANSI markets and 230 kg for CE and
Australia markets) light comes on. Boom angle
must be 45 degrees to 50 degrees (place angle
indicator on base boom between boom pivot pin
and lift cylinder attach pin).
d. Lift boom up until 1000 lb. (454 kg for ANSI markets
and 450 kg for CE and Australia markets) light
comes on. Boom angle should be 55 degrees to 64
degrees.
NOTE: If limit switch settings need to be changed, you will need
to recheck that the 500 lb. (227 kg for ANSI markets and
230 kg for CE and Australia markets) light comes on at 45
degrees to 50 degrees when lifting down.
7. Check capacity limit switch as follows:
Main Boom Length Switch.
a. Lift main boom to approximately horizontal.
b. Telescope boom out until 500 lb. (227 kg for ANSI
markets and 230 kg for CE and Australia markets)
light comes on (may need to used auxiliary power
to position boom correctly).
c. Mark the wear pad location on the main fly boom.
d. Telescope the main boom to full extension.
e. Measure from the mark on the fly boom to the wear
pad. The dimension should be 125" to 127" (317.5
to 322.5 cm).