JLG 120-SXJ ANSI Service Manual - Manual (Page 36)

SECTION 3 - CHASSIS & TURNTABLE
3-8 – JLG Lift – 3121105
g. Carefully lower the turntable onto the swing
bearing, ensuring that the turntable and bearing
align as noted in step i above.
IF COMPRESSED AIR OR ELECTRICALLY-OPERATED IMPACT
WRENCH IS USED FOR TIGHTENING THE BEARING ATTACH-
MENT BOLTS, THE TORQUE SETTING ACCURACY OF THE TOOL
SHOULD BE CHECKED PRIOR TO USE.
h. Apply a light coating of Loctite #277 to the new
bearing bolts, and install the bolts, washers and
nuts through the turntable and inner race of the
bearing.
i. Following the Torque Sequence diagram shown
in Figure 3-6., Swing Bearing Bolt Torquing
Sequence, tighten the bolts to an initial torque of
180 ft. lbs. (244 Nm). Then following the same
sequence tighten the bolts to a final torque of
240 ft. lbs. (325 Nm).
j. Remove the lifting equipment.
k. Install the rotary coupling retaining yoke; apply a
light coating of Loctite Sealant Number TL277-
41 to the attaching bolts and secure the yoke to
the rotary coupling with the bolts and lockwash-
ers.
l. Connect the hydraulic lines to the rotary cou-
pling as tagged prior to removal.
m. At ground control station, use boom lift control
to lower boom to stowed position.
n. Using all applicable safety precautions, activate
hydraulic system and functionally check swing
system for proper and safe operation.
INSTALL BEARING WITH FILL PLUG ON SIDE.
(AS CLOSE TO CENTERLINE OF ROTATION
AS POSSIBLE.) NOTE:
Figure 3-6. Swing Bearing Bolt Torquing Sequence