JLG E300 Service Manual - Manual (Page 80)

SECTION 3 - CHASSIS & TURNTABLE
3-46 – JLG Lift – 3121253
8. Assemble six vanes, or as many vanes that will read-
ily assemble into the stator vane pockets.
9. Grasp the output end of coupling shaft (12)
with locking pliers or other appropriate turning
device and rotate coupling shaft, drive link and rotor
to seat the rotor and the assembled vanes into sta-
tor, creating the necessary clearance to assemble
the seventh or full complement of seven vanes.
Assemble the seven vanes using minimum force.
Go to assembly procedure #15, to continue assem-
bly.
Final Checks
1. Pressurize the motor with 100 p.s.i. dry air or nitro-
gen and submerge in solvent to check for external
leaks.
2. Check motor for rotation. Torque required to rotate
coupling shaft should not be more than 50 ft. lbs.
(68 N m)
3. Pressure port with "A" cast under it on housing (18)
is for clockwise coupling shaft rotation as viewed
from the output end of coupling shaft. Pressure port
with "B" cast under it is for counter clockwise cou-
pling shaft rotation.
4. Use test stand if available, to check operation of the
motor.
Installation Torque
When installing the swing motor onto the swing drive,
torque apply threadlocker JLG P/N 0100019 to the
threads of the retaining bolts and torque to 85 ft.lbs. (115
Nm).
3.8 SWING DRIVE
NOTE: The swing drive must be removed from the machine
to be serviced.
The swing drive has five major components; the housing,
worm, worm gear, output pinion, and gear/pinion cap.
Tools required:
• hydraulic press
• 5/16" 12 point socket
• 7/16" socket
• 3/4" socket
• torque wrench (80 lb-ft)
• steel hammer
• soft face hammer
• bearing puller (external and internal)
• large flat blade screw driver
NOTE: Also needed are a shim and seal kit, 3/4" steel rod at
least 10" long, LocTite #515, Mobil SHC 007 grease
(available as SW007GK), Mobil SHC 460 grease,
LocTite 242/243 for bolts and any other parts that
may be worn out.
Disassembly
1. Remove the slew ring (14) by removing the two 1/4"
bolts (12) and washers (13) that hold the slew ring to
the housing.
2. Remove four #6 machine screws (29) that are
located on cover plate (20) immediately in front of
Pinion (22).
3. Remove eight 5/16" 12 point capscrews (3) from
gear/pinion cap (19). Pry the cap from the housing.
The cover plate (20) will come off with cap. Note
where sealant is on Cover and plate so when assem-
bling sealant can be applied in the same place. Note
number and color of shims (26) between the cap
and housing. Remove six small screws (29) from
cover plate. Pry the cover plate (20) from cap (19)
and discard the cover plate. Note the number and
color of shims between cover plate and cap.
4. Remove the Pinion and Gear assembly (15, 16,
17,22,24,25,30) from the housing. The assembly lifts
directly upward from the housing.
TORQUE