JLG 4017 Service Manual - Manual (Page 73)

5.11 4017
Axles, Drive Shafts, Wheels and Tires
5.4.2 Drive Shaft Maintenance
Refer to Section 2.6, “Lubrication Schedules,” for
information regarding the lubrication of the grease fittings
on the drive shafts.
5.4.3 Drive Shaft Removal
IMPORTANT: To help ensure optimum performance, the
drive shaft assemblies are specially balanced as a unit at
the factory. When servicing any flange yoke, slip yoke or
drive shaft tube, order a complete assembly if
components are bent or damaged. Refer to the appropriate
parts manual for ordering information.
Note: The drive shaft assemblies are balanced
assemblies. Mark the yoke and axle, transmission,
transfer case, and the shaft and slip yoke so that these
components can be returned to their original positions
when reinstalled. Yokes at both ends of the drive shaft
must be in the same plane to help prevent excessive
vibration.
a. Transmission-to-Axle Drive Shaft
1. Level the machine, retract the boom, lower the boom,
place the transmission control lever in the (N)
NEUTRAL, engage the park brake switch and shut
the engine OFF.
2. Place an Accident Prevention Tag on both the
ignition key switch and steering wheel, stating that
the machine should not be operated.
3. Open the engine cover. Allow the system fluids to
cool.
4. Remove the battery negative (-) ground cable from
the battery negative (-) terminal.
5. The drive shaft assembly is a balanced assembly.
Mark the yoke and axle, transmission and the shaft
and slip yoke so that these components can be
returned to their original positions when reinstalled.
Yokes at both ends of the drive shaft must be in the
same plane to help prevent excessive vibration.
6. Remove the four capscrews and two straps securing
the bearing cross to the transmission output shaft
flange.
7. Remove the four capscrews and two straps securing
the bearing crosses to the axle.
8. Remove the front drive shaft assembly.
9. Repeat the above procedure on the rear drive shaft.
5.4.4 Drive Shaft Installation
IMPORTANT: To help ensure optimum performance, the
drive shaft assemblies are specially balanced as a unit at
the factory. When servicing any flange yoke, slip yoke or
drive shaft tube, order a complete assembly if
components are bent or damaged. Refer to the
appropriate parts manual for ordering information.
a. Transmission-to-Axle Drive Shafts
1. Raise the drive shaft assembly into position. The
slip-yoke end of the drive shaft mounts toward the
axle. If reinstalling a drive shaft previously removed,
align the flange yokes according to the alignment
marks made during removal.
IMPORTANT: Yokes at both ends of the drive shaft must
be in the same plane to help prevent excessive vibration.
2. Install the four capscrews and two straps securing
the bearing crosses to the transmission. Torque the
capscrews to 81 Nm (60 lb-ft).
3. Install the four capscrews and two straps securing
the bearing crosses to the axle. Torque the
capscrews to 81 Nm (60 lb-ft).
4. Repeat the above procedure on the rear drive shaft.
5. Connect the battery negative (-) cable at the battery
negative (-) terminal.
6. Close and secure the engine cover.
Mt0350
To Axle
To Transmission