Checking worm gear end play, Adjusting end play, 8 swing motor – JLG E300 Service Manual User Manual
Page 67: Removal, Disassembly, Swing motor -33, Removal -33 disassembly -33, 8 swing motor removal
SECTION 3 - CHASSIS & TURNTABLE
3120772
– JLG Lift –
3-33
Checking Worm Gear End Play
JLG Industries requires that a annual inspection be per-
formed on the worm gear end play.
1.
Using a dial indicator, measure end play of worm
gear, by applying side to side movement by hand to
platform.
2.
If tolerance exceeds.010”, reduce end play to less
than.005”. Refer to Adjusting End Play.
Adjusting End Play
1.
Remove end plate.
2.
Measure and record total thickness of existing shim
pack.
3.
Determine thickness of shim pack required to
obtain.001” -.005” end play.
4.
Adjust shim pack thickness as required to obtain
proper end play. Reduce end play by removing
thicker shims and replacing with thinner shims,
included in kit.
5.
Replace end plate and torque bolts to 90 ft. lbs. (122
Nm).
6.
Recheck end play.
.
3.8 SWING MOTOR
Removal
1.
Remove the two bolts securing the motor to the
swing drive.
2.
Gain access to the hydraulic lines and tag and dis-
connect the lines running to the motor. Cap or plug
all openings.
Disassembly
NOTE: Before disassembling the motor, it is highly recom-
mended that paint or a marker be used to make a V
shaped set of lines from the end cover to the hous-
ing to aid in proper assembly. It is also important that
the steps involving timing be followed carefully to
insure proper motor operation.
1.
Remove all shaft related components from the shaft
(i.e. keys, wire rings, nuts). To aid in assembly of the
motor, make a V shaped set of lines from the end
cover to the housing using either paint or a marker.
2.
With the shaft facing down, secure the motor in a
vise by clamping onto the housing.
3.
Loosen and remove the bolts holding the motor
assembly together.
4.
Remove the end cover.
5.
Remove the body seal and discard the seal.
6.
Remove the rotor assembly and wear plate. Remove
the body seals from the rotor and housing and dis-
card the seals.
7.
Remove the drive link pin and drive link from the
motor and lay aside.
Allowable Tolerance
.001 to .005
(
)
Fig 2 Adjusting End Play.
END PLATE
SHIMS