JLG 4017RS Service Manual - Manual (Page 104)

Axles, Drive Shafts, Wheels and Tires
5-10 3614RS, 4017RS
5.9 DRIVE SHAFTS
5.9.1 Drive Shaft Inspection
Inspect areas where the drive shaft flange yokes and slip
yokes mount to the drive shafts. Attempt to turn each drive
shaft in both directions. Look for excessive looseness,
missing parts, cracks or other damage. Worn or damaged
drive shafts and cross and bearing assemblies may cause an
excessive amount of vibration or noise.
Note: To ensure optimum performance, the driveshaft
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: Any bolt removed from the drive shaft assembly MUST
be replaced. Do Not re-torque.
5.9.2 Drive Shaft Maintenance
Refer to Section 2.5, “Fluids, Lubricants and Capacities,” for
information regarding the lubrication of the grease fittings
on the drive shafts.
5.9.3 Drive Shaft Removal
1. Park machine on a firm, level surface, level machine, fully
retract boom, lower boom, place transmission in (N)
NEUTRAL, engage parking brake, and shut engine OFF.
2. Place a Do Not Operate Tag on both ignition key switch
and steering wheel.
3. Open engine cover. Allow system fluids to cool.
4. Properly disconnect battery.
5. Block the wheels.
6. 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.
7. Remove bolts (1) and straps (2) securing bearing cross
to the transmission output shaft flange. Discard bolts.
8. Remove bolts (3) and straps (4) securing bearing crosses
to axle.
9. Remove drive shaft assembly.
10. Repeat above procedure on rear drive shaft.
5.9.4 Drive Shaft Cleaning and Drying
1. Disassemble and clean all parts using an approved
cleaning fluid. Allow to dry.
2. Remove any burrs or rough spots from all machined
surfaces. Re-clean and dry as required.
5.9.5 Drive Shaft Installation
1. Raise drive shaft assembly into position. The slip yoke
end of drive shaft mounts toward axle. If reinstalling a
drive shaft previously removed, align flange yokes
according to the alignment marks made during
removal.
Note: Yokes at both ends of drive shaft must be in same plane
to help prevent excessive vibration.
2. Apply Loctite ® 243 TM to all mounting bolts.
3. Install the two straps (2) and four new bolts (1) securing
the bearing crosses to the transmission. Torque
capscrews to 38 Nm (lb-ft).
4. Install the two straps (4) and four new bolts (3) securing
the bearing crosses to the axle. Torque capscrews to 38
Nm (lb-ft).
5. Repeat above procedure on rear drive shaft.
6. Properly connect battery.
7. Close and secure engine cover.
8. Unblock wheels.
9. Remove Do Not Operate Tag from ignition key switch
and steering wheel.
MT0350
TO AXLE
TO TRANSMISSION
1
4
2
3