Transmission-To-Axle Drive Shaft; Drive Shaft Disassembly - JLG Lull 1044C-54 II Series Service Manual

Transmission-to-Axle Drive Shaft

Drive Shaft Disassembly

31200079
1. Level the machine, ground the carriage, place the travel select lever in
the (N) NEUTRAL position, engage the parking 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.
(Refer to Section 1.5, "Accident Prevention Tags.")
3. Open the engine compartment access door. Allow the engine,
transmission and hydraulic fluid to cool.
4. Disconnect the battery negative (-) ground cable at the battery
negative (-) terminal to prevent the engine from starting accidentally.
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.
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.
1. Use an approved, non-flammable cleaning fluid to thoroughly clean the
drive shaft assembly with a brush. Wipe dry before disassembling.
CAUTION: Avoid using excess force when clamping the drive shaft in a
vise. Apply only enough force to hold the drive shaft securely.
Excessive force can damage the drive shaft, resulting in an
unbalanced condition.
2. Place the drive shaft assembly in a bench vise.
3. Use a pair of pliers to pinch the ends of the snap rings securing the
cross and bearing assemblies to the yoke. Remove the snap rings from
their grooves in the yoke.
Note: If the snap rings fail to readily snap out of their grooves in the yokes, tap the
end of the bearing cap lightly to help relieve pressure against the snap
rings.
Axles and Brakes
9-9